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btcsuite/btcd
rpcclient/chain.go
GetBlockChainInfoAsync
func (c *Client) GetBlockChainInfoAsync() FutureGetBlockChainInfoResult { cmd := btcjson.NewGetBlockChainInfoCmd() return c.sendCmd(cmd) }
go
func (c *Client) GetBlockChainInfoAsync() FutureGetBlockChainInfoResult { cmd := btcjson.NewGetBlockChainInfoCmd() return c.sendCmd(cmd) }
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// GetBlockChainInfoAsync returns an instance of a type that can be used to get // the result of the RPC at some future time by invoking the Receive function // on the returned instance. // // See GetBlockChainInfo for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L278-L281
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHashAsync
func (c *Client) GetBlockHashAsync(blockHeight int64) FutureGetBlockHashResult { cmd := btcjson.NewGetBlockHashCmd(blockHeight) return c.sendCmd(cmd) }
go
func (c *Client) GetBlockHashAsync(blockHeight int64) FutureGetBlockHashResult { cmd := btcjson.NewGetBlockHashCmd(blockHeight) return c.sendCmd(cmd) }
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// GetBlockHashAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetBlockHash for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L316-L319
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHash
func (c *Client) GetBlockHash(blockHeight int64) (*chainhash.Hash, error) { return c.GetBlockHashAsync(blockHeight).Receive() }
go
func (c *Client) GetBlockHash(blockHeight int64) (*chainhash.Hash, error) { return c.GetBlockHashAsync(blockHeight).Receive() }
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// GetBlockHash returns the hash of the block in the best block chain at the // given height.
[ "GetBlockHash", "returns", "the", "hash", "of", "the", "block", "in", "the", "best", "block", "chain", "at", "the", "given", "height", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L323-L325
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetBlockHeaderResult) Receive() (*wire.BlockHeader, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var bhHex string err = json.Unmarshal(res, &bhHex) if err != nil { return nil, err } serializedBH, err := hex.DecodeString(bhHex) if err != nil { return nil, err } // Deserialize the blockheader and return it. var bh wire.BlockHeader err = bh.Deserialize(bytes.NewReader(serializedBH)) if err != nil { return nil, err } return &bh, err }
go
func (r FutureGetBlockHeaderResult) Receive() (*wire.BlockHeader, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var bhHex string err = json.Unmarshal(res, &bhHex) if err != nil { return nil, err } serializedBH, err := hex.DecodeString(bhHex) if err != nil { return nil, err } // Deserialize the blockheader and return it. var bh wire.BlockHeader err = bh.Deserialize(bytes.NewReader(serializedBH)) if err != nil { return nil, err } return &bh, err }
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// Receive waits for the response promised by the future and returns the // blockheader requested from the server given its hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L333-L359
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHeaderAsync
func (c *Client) GetBlockHeaderAsync(blockHash *chainhash.Hash) FutureGetBlockHeaderResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetBlockHeaderCmd(hash, btcjson.Bool(false)) return c.sendCmd(cmd) }
go
func (c *Client) GetBlockHeaderAsync(blockHash *chainhash.Hash) FutureGetBlockHeaderResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetBlockHeaderCmd(hash, btcjson.Bool(false)) return c.sendCmd(cmd) }
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// GetBlockHeaderAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetBlockHeader for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L366-L374
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHeader
func (c *Client) GetBlockHeader(blockHash *chainhash.Hash) (*wire.BlockHeader, error) { return c.GetBlockHeaderAsync(blockHash).Receive() }
go
func (c *Client) GetBlockHeader(blockHash *chainhash.Hash) (*wire.BlockHeader, error) { return c.GetBlockHeaderAsync(blockHash).Receive() }
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// GetBlockHeader returns the blockheader from the server given its hash. // // See GetBlockHeaderVerbose to retrieve a data structure with information about the // block instead.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L380-L382
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetBlockHeaderVerboseResult) Receive() (*btcjson.GetBlockHeaderVerboseResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var bh btcjson.GetBlockHeaderVerboseResult err = json.Unmarshal(res, &bh) if err != nil { return nil, err } return &bh, nil }
go
func (r FutureGetBlockHeaderVerboseResult) Receive() (*btcjson.GetBlockHeaderVerboseResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var bh btcjson.GetBlockHeaderVerboseResult err = json.Unmarshal(res, &bh) if err != nil { return nil, err } return &bh, nil }
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// Receive waits for the response promised by the future and returns the // data structure of the blockheader requested from the server given its hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L390-L404
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHeaderVerboseAsync
func (c *Client) GetBlockHeaderVerboseAsync(blockHash *chainhash.Hash) FutureGetBlockHeaderVerboseResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetBlockHeaderCmd(hash, btcjson.Bool(true)) return c.sendCmd(cmd) }
go
func (c *Client) GetBlockHeaderVerboseAsync(blockHash *chainhash.Hash) FutureGetBlockHeaderVerboseResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetBlockHeaderCmd(hash, btcjson.Bool(true)) return c.sendCmd(cmd) }
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// GetBlockHeaderVerboseAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetBlockHeader for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L411-L419
train
btcsuite/btcd
rpcclient/chain.go
GetBlockHeaderVerbose
func (c *Client) GetBlockHeaderVerbose(blockHash *chainhash.Hash) (*btcjson.GetBlockHeaderVerboseResult, error) { return c.GetBlockHeaderVerboseAsync(blockHash).Receive() }
go
func (c *Client) GetBlockHeaderVerbose(blockHash *chainhash.Hash) (*btcjson.GetBlockHeaderVerboseResult, error) { return c.GetBlockHeaderVerboseAsync(blockHash).Receive() }
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// GetBlockHeaderVerbose returns a data structure with information about the // blockheader from the server given its hash. // // See GetBlockHeader to retrieve a blockheader instead.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L425-L427
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetMempoolEntryResult) Receive() (*btcjson.GetMempoolEntryResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as an array of strings. var mempoolEntryResult btcjson.GetMempoolEntryResult err = json.Unmarshal(res, &mempoolEntryResult) if err != nil { return nil, err } return &mempoolEntryResult, nil }
go
func (r FutureGetMempoolEntryResult) Receive() (*btcjson.GetMempoolEntryResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as an array of strings. var mempoolEntryResult btcjson.GetMempoolEntryResult err = json.Unmarshal(res, &mempoolEntryResult) if err != nil { return nil, err } return &mempoolEntryResult, nil }
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// Receive waits for the response promised by the future and returns a data // structure with information about the transaction in the memory pool given // its hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L436-L450
train
btcsuite/btcd
rpcclient/chain.go
GetMempoolEntryAsync
func (c *Client) GetMempoolEntryAsync(txHash string) FutureGetMempoolEntryResult { cmd := btcjson.NewGetMempoolEntryCmd(txHash) return c.sendCmd(cmd) }
go
func (c *Client) GetMempoolEntryAsync(txHash string) FutureGetMempoolEntryResult { cmd := btcjson.NewGetMempoolEntryCmd(txHash) return c.sendCmd(cmd) }
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// GetMempoolEntryAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetMempoolEntry for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L457-L460
train
btcsuite/btcd
rpcclient/chain.go
GetMempoolEntry
func (c *Client) GetMempoolEntry(txHash string) (*btcjson.GetMempoolEntryResult, error) { return c.GetMempoolEntryAsync(txHash).Receive() }
go
func (c *Client) GetMempoolEntry(txHash string) (*btcjson.GetMempoolEntryResult, error) { return c.GetMempoolEntryAsync(txHash).Receive() }
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// GetMempoolEntry returns a data structure with information about the // transaction in the memory pool given its hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L464-L466
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetRawMempoolResult) Receive() ([]*chainhash.Hash, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as an array of strings. var txHashStrs []string err = json.Unmarshal(res, &txHashStrs) if err != nil { return nil, err } // Create a slice of ShaHash arrays from the string slice. txHashes := make([]*chainhash.Hash, 0, len(txHashStrs)) for _, hashStr := range txHashStrs { txHash, err := chainhash.NewHashFromStr(hashStr) if err != nil { return nil, err } txHashes = append(txHashes, txHash) } return txHashes, nil }
go
func (r FutureGetRawMempoolResult) Receive() ([]*chainhash.Hash, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as an array of strings. var txHashStrs []string err = json.Unmarshal(res, &txHashStrs) if err != nil { return nil, err } // Create a slice of ShaHash arrays from the string slice. txHashes := make([]*chainhash.Hash, 0, len(txHashStrs)) for _, hashStr := range txHashStrs { txHash, err := chainhash.NewHashFromStr(hashStr) if err != nil { return nil, err } txHashes = append(txHashes, txHash) } return txHashes, nil }
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// Receive waits for the response promised by the future and returns the hashes // of all transactions in the memory pool.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L474-L498
train
btcsuite/btcd
rpcclient/chain.go
GetRawMempoolAsync
func (c *Client) GetRawMempoolAsync() FutureGetRawMempoolResult { cmd := btcjson.NewGetRawMempoolCmd(btcjson.Bool(false)) return c.sendCmd(cmd) }
go
func (c *Client) GetRawMempoolAsync() FutureGetRawMempoolResult { cmd := btcjson.NewGetRawMempoolCmd(btcjson.Bool(false)) return c.sendCmd(cmd) }
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// GetRawMempoolAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetRawMempool for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L505-L508
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetRawMempoolVerboseResult) Receive() (map[string]btcjson.GetRawMempoolVerboseResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as a map of strings (tx shas) to their detailed // results. var mempoolItems map[string]btcjson.GetRawMempoolVerboseResult err = json.Unmarshal(res, &mempoolItems) if err != nil { return nil, err } return mempoolItems, nil }
go
func (r FutureGetRawMempoolVerboseResult) Receive() (map[string]btcjson.GetRawMempoolVerboseResult, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal the result as a map of strings (tx shas) to their detailed // results. var mempoolItems map[string]btcjson.GetRawMempoolVerboseResult err = json.Unmarshal(res, &mempoolItems) if err != nil { return nil, err } return mempoolItems, nil }
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// Receive waits for the response promised by the future and returns a map of // transaction hashes to an associated data structure with information about the // transaction for all transactions in the memory pool.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L525-L539
train
btcsuite/btcd
rpcclient/chain.go
GetRawMempoolVerboseAsync
func (c *Client) GetRawMempoolVerboseAsync() FutureGetRawMempoolVerboseResult { cmd := btcjson.NewGetRawMempoolCmd(btcjson.Bool(true)) return c.sendCmd(cmd) }
go
func (c *Client) GetRawMempoolVerboseAsync() FutureGetRawMempoolVerboseResult { cmd := btcjson.NewGetRawMempoolCmd(btcjson.Bool(true)) return c.sendCmd(cmd) }
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// GetRawMempoolVerboseAsync returns an instance of a type that can be used to // get the result of the RPC at some future time by invoking the Receive // function on the returned instance. // // See GetRawMempoolVerbose for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L546-L549
train
btcsuite/btcd
rpcclient/chain.go
GetRawMempoolVerbose
func (c *Client) GetRawMempoolVerbose() (map[string]btcjson.GetRawMempoolVerboseResult, error) { return c.GetRawMempoolVerboseAsync().Receive() }
go
func (c *Client) GetRawMempoolVerbose() (map[string]btcjson.GetRawMempoolVerboseResult, error) { return c.GetRawMempoolVerboseAsync().Receive() }
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// GetRawMempoolVerbose returns a map of transaction hashes to an associated // data structure with information about the transaction for all transactions in // the memory pool. // // See GetRawMempool to retrieve only the transaction hashes instead.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L556-L558
train
btcsuite/btcd
rpcclient/chain.go
EstimateFeeAsync
func (c *Client) EstimateFeeAsync(numBlocks int64) FutureEstimateFeeResult { cmd := btcjson.NewEstimateFeeCmd(numBlocks) return c.sendCmd(cmd) }
go
func (c *Client) EstimateFeeAsync(numBlocks int64) FutureEstimateFeeResult { cmd := btcjson.NewEstimateFeeCmd(numBlocks) return c.sendCmd(cmd) }
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// EstimateFeeAsync returns an instance of a type that can be used to get the result // of the RPC at some future time by invoking the Receive function on the // returned instance. // // See EstimateFee for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L587-L590
train
btcsuite/btcd
rpcclient/chain.go
EstimateFee
func (c *Client) EstimateFee(numBlocks int64) (float64, error) { return c.EstimateFeeAsync(numBlocks).Receive() }
go
func (c *Client) EstimateFee(numBlocks int64) (float64, error) { return c.EstimateFeeAsync(numBlocks).Receive() }
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// EstimateFee provides an estimated fee in bitcoins per kilobyte.
[ "EstimateFee", "provides", "an", "estimated", "fee", "in", "bitcoins", "per", "kilobyte", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L593-L595
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureVerifyChainResult) Receive() (bool, error) { res, err := receiveFuture(r) if err != nil { return false, err } // Unmarshal the result as a boolean. var verified bool err = json.Unmarshal(res, &verified) if err != nil { return false, err } return verified, nil }
go
func (r FutureVerifyChainResult) Receive() (bool, error) { res, err := receiveFuture(r) if err != nil { return false, err } // Unmarshal the result as a boolean. var verified bool err = json.Unmarshal(res, &verified) if err != nil { return false, err } return verified, nil }
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// Receive waits for the response promised by the future and returns whether // or not the chain verified based on the check level and number of blocks // to verify specified in the original call.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L605-L618
train
btcsuite/btcd
rpcclient/chain.go
VerifyChainAsync
func (c *Client) VerifyChainAsync() FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(nil, nil) return c.sendCmd(cmd) }
go
func (c *Client) VerifyChainAsync() FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(nil, nil) return c.sendCmd(cmd) }
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// VerifyChainAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See VerifyChain for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L625-L628
train
btcsuite/btcd
rpcclient/chain.go
VerifyChainLevelAsync
func (c *Client) VerifyChainLevelAsync(checkLevel int32) FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(&checkLevel, nil) return c.sendCmd(cmd) }
go
func (c *Client) VerifyChainLevelAsync(checkLevel int32) FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(&checkLevel, nil) return c.sendCmd(cmd) }
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// VerifyChainLevelAsync returns an instance of a type that can be used to get // the result of the RPC at some future time by invoking the Receive function on // the returned instance. // // See VerifyChainLevel for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L643-L646
train
btcsuite/btcd
rpcclient/chain.go
VerifyChainLevel
func (c *Client) VerifyChainLevel(checkLevel int32) (bool, error) { return c.VerifyChainLevelAsync(checkLevel).Receive() }
go
func (c *Client) VerifyChainLevel(checkLevel int32) (bool, error) { return c.VerifyChainLevelAsync(checkLevel).Receive() }
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// VerifyChainLevel requests the server to verify the block chain database using // the passed check level and default number of blocks to verify. // // The check level controls how thorough the verification is with higher numbers // increasing the amount of checks done as consequently how long the // verification takes. // // See VerifyChain to use the default check level and VerifyChainBlocks to // override the number of blocks to verify.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L657-L659
train
btcsuite/btcd
rpcclient/chain.go
VerifyChainBlocksAsync
func (c *Client) VerifyChainBlocksAsync(checkLevel, numBlocks int32) FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(&checkLevel, &numBlocks) return c.sendCmd(cmd) }
go
func (c *Client) VerifyChainBlocksAsync(checkLevel, numBlocks int32) FutureVerifyChainResult { cmd := btcjson.NewVerifyChainCmd(&checkLevel, &numBlocks) return c.sendCmd(cmd) }
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// VerifyChainBlocksAsync returns an instance of a type that can be used to get // the result of the RPC at some future time by invoking the Receive function on // the returned instance. // // See VerifyChainBlocks for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L666-L669
train
btcsuite/btcd
rpcclient/chain.go
VerifyChainBlocks
func (c *Client) VerifyChainBlocks(checkLevel, numBlocks int32) (bool, error) { return c.VerifyChainBlocksAsync(checkLevel, numBlocks).Receive() }
go
func (c *Client) VerifyChainBlocks(checkLevel, numBlocks int32) (bool, error) { return c.VerifyChainBlocksAsync(checkLevel, numBlocks).Receive() }
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// VerifyChainBlocks requests the server to verify the block chain database // using the passed check level and number of blocks to verify. // // The check level controls how thorough the verification is with higher numbers // increasing the amount of checks done as consequently how long the // verification takes. // // The number of blocks refers to the number of blocks from the end of the // current longest chain. // // See VerifyChain and VerifyChainLevel to use defaults.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L682-L684
train
btcsuite/btcd
rpcclient/chain.go
GetTxOutAsync
func (c *Client) GetTxOutAsync(txHash *chainhash.Hash, index uint32, mempool bool) FutureGetTxOutResult { hash := "" if txHash != nil { hash = txHash.String() } cmd := btcjson.NewGetTxOutCmd(hash, index, &mempool) return c.sendCmd(cmd) }
go
func (c *Client) GetTxOutAsync(txHash *chainhash.Hash, index uint32, mempool bool) FutureGetTxOutResult { hash := "" if txHash != nil { hash = txHash.String() } cmd := btcjson.NewGetTxOutCmd(hash, index, &mempool) return c.sendCmd(cmd) }
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// GetTxOutAsync returns an instance of a type that can be used to get // the result of the RPC at some future time by invoking the Receive function on // the returned instance. // // See GetTxOut for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L719-L727
train
btcsuite/btcd
rpcclient/chain.go
GetTxOut
func (c *Client) GetTxOut(txHash *chainhash.Hash, index uint32, mempool bool) (*btcjson.GetTxOutResult, error) { return c.GetTxOutAsync(txHash, index, mempool).Receive() }
go
func (c *Client) GetTxOut(txHash *chainhash.Hash, index uint32, mempool bool) (*btcjson.GetTxOutResult, error) { return c.GetTxOutAsync(txHash, index, mempool).Receive() }
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// GetTxOut returns the transaction output info if it's unspent and // nil, otherwise.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L731-L733
train
btcsuite/btcd
rpcclient/chain.go
InvalidateBlockAsync
func (c *Client) InvalidateBlockAsync(blockHash *chainhash.Hash) FutureInvalidateBlockResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewInvalidateBlockCmd(hash) return c.sendCmd(cmd) }
go
func (c *Client) InvalidateBlockAsync(blockHash *chainhash.Hash) FutureInvalidateBlockResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewInvalidateBlockCmd(hash) return c.sendCmd(cmd) }
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// InvalidateBlockAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See InvalidateBlock for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L807-L815
train
btcsuite/btcd
rpcclient/chain.go
InvalidateBlock
func (c *Client) InvalidateBlock(blockHash *chainhash.Hash) error { return c.InvalidateBlockAsync(blockHash).Receive() }
go
func (c *Client) InvalidateBlock(blockHash *chainhash.Hash) error { return c.InvalidateBlockAsync(blockHash).Receive() }
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// InvalidateBlock invalidates a specific block.
[ "InvalidateBlock", "invalidates", "a", "specific", "block", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L818-L820
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetCFilterResult) Receive() (*wire.MsgCFilter, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var filterHex string err = json.Unmarshal(res, &filterHex) if err != nil { return nil, err } // Decode the serialized cf hex to raw bytes. serializedFilter, err := hex.DecodeString(filterHex) if err != nil { return nil, err } // Assign the filter bytes to the correct field of the wire message. // We aren't going to set the block hash or extended flag, since we // don't actually get that back in the RPC response. var msgCFilter wire.MsgCFilter msgCFilter.Data = serializedFilter return &msgCFilter, nil }
go
func (r FutureGetCFilterResult) Receive() (*wire.MsgCFilter, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var filterHex string err = json.Unmarshal(res, &filterHex) if err != nil { return nil, err } // Decode the serialized cf hex to raw bytes. serializedFilter, err := hex.DecodeString(filterHex) if err != nil { return nil, err } // Assign the filter bytes to the correct field of the wire message. // We aren't going to set the block hash or extended flag, since we // don't actually get that back in the RPC response. var msgCFilter wire.MsgCFilter msgCFilter.Data = serializedFilter return &msgCFilter, nil }
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// Receive waits for the response promised by the future and returns the raw // filter requested from the server given its block hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L828-L853
train
btcsuite/btcd
rpcclient/chain.go
GetCFilterAsync
func (c *Client) GetCFilterAsync(blockHash *chainhash.Hash, filterType wire.FilterType) FutureGetCFilterResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetCFilterCmd(hash, filterType) return c.sendCmd(cmd) }
go
func (c *Client) GetCFilterAsync(blockHash *chainhash.Hash, filterType wire.FilterType) FutureGetCFilterResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetCFilterCmd(hash, filterType) return c.sendCmd(cmd) }
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// GetCFilterAsync returns an instance of a type that can be used to get the // result of the RPC at some future time by invoking the Receive function on the // returned instance. // // See GetCFilter for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L860-L869
train
btcsuite/btcd
rpcclient/chain.go
GetCFilter
func (c *Client) GetCFilter(blockHash *chainhash.Hash, filterType wire.FilterType) (*wire.MsgCFilter, error) { return c.GetCFilterAsync(blockHash, filterType).Receive() }
go
func (c *Client) GetCFilter(blockHash *chainhash.Hash, filterType wire.FilterType) (*wire.MsgCFilter, error) { return c.GetCFilterAsync(blockHash, filterType).Receive() }
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// GetCFilter returns a raw filter from the server given its block hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L872-L875
train
btcsuite/btcd
rpcclient/chain.go
Receive
func (r FutureGetCFilterHeaderResult) Receive() (*wire.MsgCFHeaders, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var headerHex string err = json.Unmarshal(res, &headerHex) if err != nil { return nil, err } // Assign the decoded header into a hash headerHash, err := chainhash.NewHashFromStr(headerHex) if err != nil { return nil, err } // Assign the hash to a headers message and return it. msgCFHeaders := wire.MsgCFHeaders{PrevFilterHeader: *headerHash} return &msgCFHeaders, nil }
go
func (r FutureGetCFilterHeaderResult) Receive() (*wire.MsgCFHeaders, error) { res, err := receiveFuture(r) if err != nil { return nil, err } // Unmarshal result as a string. var headerHex string err = json.Unmarshal(res, &headerHex) if err != nil { return nil, err } // Assign the decoded header into a hash headerHash, err := chainhash.NewHashFromStr(headerHex) if err != nil { return nil, err } // Assign the hash to a headers message and return it. msgCFHeaders := wire.MsgCFHeaders{PrevFilterHeader: *headerHash} return &msgCFHeaders, nil }
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// Receive waits for the response promised by the future and returns the raw // filter header requested from the server given its block hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L883-L906
train
btcsuite/btcd
rpcclient/chain.go
GetCFilterHeaderAsync
func (c *Client) GetCFilterHeaderAsync(blockHash *chainhash.Hash, filterType wire.FilterType) FutureGetCFilterHeaderResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetCFilterHeaderCmd(hash, filterType) return c.sendCmd(cmd) }
go
func (c *Client) GetCFilterHeaderAsync(blockHash *chainhash.Hash, filterType wire.FilterType) FutureGetCFilterHeaderResult { hash := "" if blockHash != nil { hash = blockHash.String() } cmd := btcjson.NewGetCFilterHeaderCmd(hash, filterType) return c.sendCmd(cmd) }
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// GetCFilterHeaderAsync returns an instance of a type that can be used to get // the result of the RPC at some future time by invoking the Receive function // on the returned instance. // // See GetCFilterHeader for the blocking version and more details.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L913-L922
train
btcsuite/btcd
rpcclient/chain.go
GetCFilterHeader
func (c *Client) GetCFilterHeader(blockHash *chainhash.Hash, filterType wire.FilterType) (*wire.MsgCFHeaders, error) { return c.GetCFilterHeaderAsync(blockHash, filterType).Receive() }
go
func (c *Client) GetCFilterHeader(blockHash *chainhash.Hash, filterType wire.FilterType) (*wire.MsgCFHeaders, error) { return c.GetCFilterHeaderAsync(blockHash, filterType).Receive() }
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// GetCFilterHeader returns a raw filter header from the server given its block // hash.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/rpcclient/chain.go#L926-L929
train
btcsuite/btcd
wire/msggetcfilters.go
NewMsgGetCFilters
func NewMsgGetCFilters(filterType FilterType, startHeight uint32, stopHash *chainhash.Hash) *MsgGetCFilters { return &MsgGetCFilters{ FilterType: filterType, StartHeight: startHeight, StopHash: *stopHash, } }
go
func NewMsgGetCFilters(filterType FilterType, startHeight uint32, stopHash *chainhash.Hash) *MsgGetCFilters { return &MsgGetCFilters{ FilterType: filterType, StartHeight: startHeight, StopHash: *stopHash, } }
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// NewMsgGetCFilters returns a new bitcoin getcfilters message that conforms to // the Message interface using the passed parameters and defaults for the // remaining fields.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/wire/msggetcfilters.go#L74-L81
train
btcsuite/btcd
server.go
forAllPeers
func (ps *peerState) forAllPeers(closure func(sp *serverPeer)) { for _, e := range ps.inboundPeers { closure(e) } ps.forAllOutboundPeers(closure) }
go
func (ps *peerState) forAllPeers(closure func(sp *serverPeer)) { for _, e := range ps.inboundPeers { closure(e) } ps.forAllOutboundPeers(closure) }
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// forAllPeers is a helper function that runs closure on all peers known to // peerState.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L182-L187
train
btcsuite/btcd
server.go
newServerPeer
func newServerPeer(s *server, isPersistent bool) *serverPeer { return &serverPeer{ server: s, persistent: isPersistent, filter: bloom.LoadFilter(nil), knownAddresses: make(map[string]struct{}), quit: make(chan struct{}), txProcessed: make(chan struct{}, 1), blockProcessed: make(chan struct{}, 1), } }
go
func newServerPeer(s *server, isPersistent bool) *serverPeer { return &serverPeer{ server: s, persistent: isPersistent, filter: bloom.LoadFilter(nil), knownAddresses: make(map[string]struct{}), quit: make(chan struct{}), txProcessed: make(chan struct{}, 1), blockProcessed: make(chan struct{}, 1), } }
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// newServerPeer returns a new serverPeer instance. The peer needs to be set by // the caller.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L286-L296
train
btcsuite/btcd
server.go
addressKnown
func (sp *serverPeer) addressKnown(na *wire.NetAddress) bool { _, exists := sp.knownAddresses[addrmgr.NetAddressKey(na)] return exists }
go
func (sp *serverPeer) addressKnown(na *wire.NetAddress) bool { _, exists := sp.knownAddresses[addrmgr.NetAddressKey(na)] return exists }
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// addressKnown true if the given address is already known to the peer.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L314-L317
train
btcsuite/btcd
server.go
setDisableRelayTx
func (sp *serverPeer) setDisableRelayTx(disable bool) { sp.relayMtx.Lock() sp.disableRelayTx = disable sp.relayMtx.Unlock() }
go
func (sp *serverPeer) setDisableRelayTx(disable bool) { sp.relayMtx.Lock() sp.disableRelayTx = disable sp.relayMtx.Unlock() }
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// setDisableRelayTx toggles relaying of transactions for the given peer. // It is safe for concurrent access.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L321-L325
train
btcsuite/btcd
server.go
relayTxDisabled
func (sp *serverPeer) relayTxDisabled() bool { sp.relayMtx.Lock() isDisabled := sp.disableRelayTx sp.relayMtx.Unlock() return isDisabled }
go
func (sp *serverPeer) relayTxDisabled() bool { sp.relayMtx.Lock() isDisabled := sp.disableRelayTx sp.relayMtx.Unlock() return isDisabled }
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// relayTxDisabled returns whether or not relaying of transactions for the given // peer is disabled. // It is safe for concurrent access.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L330-L336
train
btcsuite/btcd
server.go
pushAddrMsg
func (sp *serverPeer) pushAddrMsg(addresses []*wire.NetAddress) { // Filter addresses already known to the peer. addrs := make([]*wire.NetAddress, 0, len(addresses)) for _, addr := range addresses { if !sp.addressKnown(addr) { addrs = append(addrs, addr) } } known, err := sp.PushAddrMsg(addrs) if err != nil { peerLog.Errorf("Can't push address message to %s: %v", sp.Peer, err) sp.Disconnect() return } sp.addKnownAddresses(known) }
go
func (sp *serverPeer) pushAddrMsg(addresses []*wire.NetAddress) { // Filter addresses already known to the peer. addrs := make([]*wire.NetAddress, 0, len(addresses)) for _, addr := range addresses { if !sp.addressKnown(addr) { addrs = append(addrs, addr) } } known, err := sp.PushAddrMsg(addrs) if err != nil { peerLog.Errorf("Can't push address message to %s: %v", sp.Peer, err) sp.Disconnect() return } sp.addKnownAddresses(known) }
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// pushAddrMsg sends an addr message to the connected peer using the provided // addresses.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L340-L355
train
btcsuite/btcd
server.go
OnMemPool
func (sp *serverPeer) OnMemPool(_ *peer.Peer, msg *wire.MsgMemPool) { // Only allow mempool requests if the server has bloom filtering // enabled. if sp.server.services&wire.SFNodeBloom != wire.SFNodeBloom { peerLog.Debugf("peer %v sent mempool request with bloom "+ "filtering disabled -- disconnecting", sp) sp.Disconnect() return } // A decaying ban score increase is applied to prevent flooding. // The ban score accumulates and passes the ban threshold if a burst of // mempool messages comes from a peer. The score decays each minute to // half of its value. sp.addBanScore(0, 33, "mempool") // Generate inventory message with the available transactions in the // transaction memory pool. Limit it to the max allowed inventory // per message. The NewMsgInvSizeHint function automatically limits // the passed hint to the maximum allowed, so it's safe to pass it // without double checking it here. txMemPool := sp.server.txMemPool txDescs := txMemPool.TxDescs() invMsg := wire.NewMsgInvSizeHint(uint(len(txDescs))) for _, txDesc := range txDescs { // Either add all transactions when there is no bloom filter, // or only the transactions that match the filter when there is // one. if !sp.filter.IsLoaded() || sp.filter.MatchTxAndUpdate(txDesc.Tx) { iv := wire.NewInvVect(wire.InvTypeTx, txDesc.Tx.Hash()) invMsg.AddInvVect(iv) if len(invMsg.InvList)+1 > wire.MaxInvPerMsg { break } } } // Send the inventory message if there is anything to send. if len(invMsg.InvList) > 0 { sp.QueueMessage(invMsg, nil) } }
go
func (sp *serverPeer) OnMemPool(_ *peer.Peer, msg *wire.MsgMemPool) { // Only allow mempool requests if the server has bloom filtering // enabled. if sp.server.services&wire.SFNodeBloom != wire.SFNodeBloom { peerLog.Debugf("peer %v sent mempool request with bloom "+ "filtering disabled -- disconnecting", sp) sp.Disconnect() return } // A decaying ban score increase is applied to prevent flooding. // The ban score accumulates and passes the ban threshold if a burst of // mempool messages comes from a peer. The score decays each minute to // half of its value. sp.addBanScore(0, 33, "mempool") // Generate inventory message with the available transactions in the // transaction memory pool. Limit it to the max allowed inventory // per message. The NewMsgInvSizeHint function automatically limits // the passed hint to the maximum allowed, so it's safe to pass it // without double checking it here. txMemPool := sp.server.txMemPool txDescs := txMemPool.TxDescs() invMsg := wire.NewMsgInvSizeHint(uint(len(txDescs))) for _, txDesc := range txDescs { // Either add all transactions when there is no bloom filter, // or only the transactions that match the filter when there is // one. if !sp.filter.IsLoaded() || sp.filter.MatchTxAndUpdate(txDesc.Tx) { iv := wire.NewInvVect(wire.InvTypeTx, txDesc.Tx.Hash()) invMsg.AddInvVect(iv) if len(invMsg.InvList)+1 > wire.MaxInvPerMsg { break } } } // Send the inventory message if there is anything to send. if len(invMsg.InvList) > 0 { sp.QueueMessage(invMsg, nil) } }
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// OnMemPool is invoked when a peer receives a mempool bitcoin message. // It creates and sends an inventory message with the contents of the memory // pool up to the maximum inventory allowed per message. When the peer has a // bloom filter loaded, the contents are filtered accordingly.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L509-L551
train
btcsuite/btcd
server.go
OnTx
func (sp *serverPeer) OnTx(_ *peer.Peer, msg *wire.MsgTx) { if cfg.BlocksOnly { peerLog.Tracef("Ignoring tx %v from %v - blocksonly enabled", msg.TxHash(), sp) return } // Add the transaction to the known inventory for the peer. // Convert the raw MsgTx to a btcutil.Tx which provides some convenience // methods and things such as hash caching. tx := btcutil.NewTx(msg) iv := wire.NewInvVect(wire.InvTypeTx, tx.Hash()) sp.AddKnownInventory(iv) // Queue the transaction up to be handled by the sync manager and // intentionally block further receives until the transaction is fully // processed and known good or bad. This helps prevent a malicious peer // from queuing up a bunch of bad transactions before disconnecting (or // being disconnected) and wasting memory. sp.server.syncManager.QueueTx(tx, sp.Peer, sp.txProcessed) <-sp.txProcessed }
go
func (sp *serverPeer) OnTx(_ *peer.Peer, msg *wire.MsgTx) { if cfg.BlocksOnly { peerLog.Tracef("Ignoring tx %v from %v - blocksonly enabled", msg.TxHash(), sp) return } // Add the transaction to the known inventory for the peer. // Convert the raw MsgTx to a btcutil.Tx which provides some convenience // methods and things such as hash caching. tx := btcutil.NewTx(msg) iv := wire.NewInvVect(wire.InvTypeTx, tx.Hash()) sp.AddKnownInventory(iv) // Queue the transaction up to be handled by the sync manager and // intentionally block further receives until the transaction is fully // processed and known good or bad. This helps prevent a malicious peer // from queuing up a bunch of bad transactions before disconnecting (or // being disconnected) and wasting memory. sp.server.syncManager.QueueTx(tx, sp.Peer, sp.txProcessed) <-sp.txProcessed }
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// OnTx is invoked when a peer receives a tx bitcoin message. It blocks // until the bitcoin transaction has been fully processed. Unlock the block // handler this does not serialize all transactions through a single thread // transactions don't rely on the previous one in a linear fashion like blocks.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L557-L578
train
btcsuite/btcd
server.go
OnBlock
func (sp *serverPeer) OnBlock(_ *peer.Peer, msg *wire.MsgBlock, buf []byte) { // Convert the raw MsgBlock to a btcutil.Block which provides some // convenience methods and things such as hash caching. block := btcutil.NewBlockFromBlockAndBytes(msg, buf) // Add the block to the known inventory for the peer. iv := wire.NewInvVect(wire.InvTypeBlock, block.Hash()) sp.AddKnownInventory(iv) // Queue the block up to be handled by the block // manager and intentionally block further receives // until the bitcoin block is fully processed and known // good or bad. This helps prevent a malicious peer // from queuing up a bunch of bad blocks before // disconnecting (or being disconnected) and wasting // memory. Additionally, this behavior is depended on // by at least the block acceptance test tool as the // reference implementation processes blocks in the same // thread and therefore blocks further messages until // the bitcoin block has been fully processed. sp.server.syncManager.QueueBlock(block, sp.Peer, sp.blockProcessed) <-sp.blockProcessed }
go
func (sp *serverPeer) OnBlock(_ *peer.Peer, msg *wire.MsgBlock, buf []byte) { // Convert the raw MsgBlock to a btcutil.Block which provides some // convenience methods and things such as hash caching. block := btcutil.NewBlockFromBlockAndBytes(msg, buf) // Add the block to the known inventory for the peer. iv := wire.NewInvVect(wire.InvTypeBlock, block.Hash()) sp.AddKnownInventory(iv) // Queue the block up to be handled by the block // manager and intentionally block further receives // until the bitcoin block is fully processed and known // good or bad. This helps prevent a malicious peer // from queuing up a bunch of bad blocks before // disconnecting (or being disconnected) and wasting // memory. Additionally, this behavior is depended on // by at least the block acceptance test tool as the // reference implementation processes blocks in the same // thread and therefore blocks further messages until // the bitcoin block has been fully processed. sp.server.syncManager.QueueBlock(block, sp.Peer, sp.blockProcessed) <-sp.blockProcessed }
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// OnBlock is invoked when a peer receives a block bitcoin message. It // blocks until the bitcoin block has been fully processed.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L582-L604
train
btcsuite/btcd
server.go
OnHeaders
func (sp *serverPeer) OnHeaders(_ *peer.Peer, msg *wire.MsgHeaders) { sp.server.syncManager.QueueHeaders(msg, sp.Peer) }
go
func (sp *serverPeer) OnHeaders(_ *peer.Peer, msg *wire.MsgHeaders) { sp.server.syncManager.QueueHeaders(msg, sp.Peer) }
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// OnHeaders is invoked when a peer receives a headers bitcoin // message. The message is passed down to the sync manager.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L645-L647
train
btcsuite/btcd
server.go
OnGetData
func (sp *serverPeer) OnGetData(_ *peer.Peer, msg *wire.MsgGetData) { numAdded := 0 notFound := wire.NewMsgNotFound() length := len(msg.InvList) // A decaying ban score increase is applied to prevent exhausting resources // with unusually large inventory queries. // Requesting more than the maximum inventory vector length within a short // period of time yields a score above the default ban threshold. Sustained // bursts of small requests are not penalized as that would potentially ban // peers performing IBD. // This incremental score decays each minute to half of its value. sp.addBanScore(0, uint32(length)*99/wire.MaxInvPerMsg, "getdata") // We wait on this wait channel periodically to prevent queuing // far more data than we can send in a reasonable time, wasting memory. // The waiting occurs after the database fetch for the next one to // provide a little pipelining. var waitChan chan struct{} doneChan := make(chan struct{}, 1) for i, iv := range msg.InvList { var c chan struct{} // If this will be the last message we send. if i == length-1 && len(notFound.InvList) == 0 { c = doneChan } else if (i+1)%3 == 0 { // Buffered so as to not make the send goroutine block. c = make(chan struct{}, 1) } var err error switch iv.Type { case wire.InvTypeWitnessTx: err = sp.server.pushTxMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeTx: err = sp.server.pushTxMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) case wire.InvTypeWitnessBlock: err = sp.server.pushBlockMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeBlock: err = sp.server.pushBlockMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) case wire.InvTypeFilteredWitnessBlock: err = sp.server.pushMerkleBlockMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeFilteredBlock: err = sp.server.pushMerkleBlockMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) default: peerLog.Warnf("Unknown type in inventory request %d", iv.Type) continue } if err != nil { notFound.AddInvVect(iv) // When there is a failure fetching the final entry // and the done channel was sent in due to there // being no outstanding not found inventory, consume // it here because there is now not found inventory // that will use the channel momentarily. if i == len(msg.InvList)-1 && c != nil { <-c } } numAdded++ waitChan = c } if len(notFound.InvList) != 0 { sp.QueueMessage(notFound, doneChan) } // Wait for messages to be sent. We can send quite a lot of data at this // point and this will keep the peer busy for a decent amount of time. // We don't process anything else by them in this time so that we // have an idea of when we should hear back from them - else the idle // timeout could fire when we were only half done sending the blocks. if numAdded > 0 { <-doneChan } }
go
func (sp *serverPeer) OnGetData(_ *peer.Peer, msg *wire.MsgGetData) { numAdded := 0 notFound := wire.NewMsgNotFound() length := len(msg.InvList) // A decaying ban score increase is applied to prevent exhausting resources // with unusually large inventory queries. // Requesting more than the maximum inventory vector length within a short // period of time yields a score above the default ban threshold. Sustained // bursts of small requests are not penalized as that would potentially ban // peers performing IBD. // This incremental score decays each minute to half of its value. sp.addBanScore(0, uint32(length)*99/wire.MaxInvPerMsg, "getdata") // We wait on this wait channel periodically to prevent queuing // far more data than we can send in a reasonable time, wasting memory. // The waiting occurs after the database fetch for the next one to // provide a little pipelining. var waitChan chan struct{} doneChan := make(chan struct{}, 1) for i, iv := range msg.InvList { var c chan struct{} // If this will be the last message we send. if i == length-1 && len(notFound.InvList) == 0 { c = doneChan } else if (i+1)%3 == 0 { // Buffered so as to not make the send goroutine block. c = make(chan struct{}, 1) } var err error switch iv.Type { case wire.InvTypeWitnessTx: err = sp.server.pushTxMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeTx: err = sp.server.pushTxMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) case wire.InvTypeWitnessBlock: err = sp.server.pushBlockMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeBlock: err = sp.server.pushBlockMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) case wire.InvTypeFilteredWitnessBlock: err = sp.server.pushMerkleBlockMsg(sp, &iv.Hash, c, waitChan, wire.WitnessEncoding) case wire.InvTypeFilteredBlock: err = sp.server.pushMerkleBlockMsg(sp, &iv.Hash, c, waitChan, wire.BaseEncoding) default: peerLog.Warnf("Unknown type in inventory request %d", iv.Type) continue } if err != nil { notFound.AddInvVect(iv) // When there is a failure fetching the final entry // and the done channel was sent in due to there // being no outstanding not found inventory, consume // it here because there is now not found inventory // that will use the channel momentarily. if i == len(msg.InvList)-1 && c != nil { <-c } } numAdded++ waitChan = c } if len(notFound.InvList) != 0 { sp.QueueMessage(notFound, doneChan) } // Wait for messages to be sent. We can send quite a lot of data at this // point and this will keep the peer busy for a decent amount of time. // We don't process anything else by them in this time so that we // have an idea of when we should hear back from them - else the idle // timeout could fire when we were only half done sending the blocks. if numAdded > 0 { <-doneChan } }
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// handleGetData is invoked when a peer receives a getdata bitcoin message and // is used to deliver block and transaction information.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L651-L727
train
btcsuite/btcd
server.go
OnGetBlocks
func (sp *serverPeer) OnGetBlocks(_ *peer.Peer, msg *wire.MsgGetBlocks) { // Find the most recent known block in the best chain based on the block // locator and fetch all of the block hashes after it until either // wire.MaxBlocksPerMsg have been fetched or the provided stop hash is // encountered. // // Use the block after the genesis block if no other blocks in the // provided locator are known. This does mean the client will start // over with the genesis block if unknown block locators are provided. // // This mirrors the behavior in the reference implementation. chain := sp.server.chain hashList := chain.LocateBlocks(msg.BlockLocatorHashes, &msg.HashStop, wire.MaxBlocksPerMsg) // Generate inventory message. invMsg := wire.NewMsgInv() for i := range hashList { iv := wire.NewInvVect(wire.InvTypeBlock, &hashList[i]) invMsg.AddInvVect(iv) } // Send the inventory message if there is anything to send. if len(invMsg.InvList) > 0 { invListLen := len(invMsg.InvList) if invListLen == wire.MaxBlocksPerMsg { // Intentionally use a copy of the final hash so there // is not a reference into the inventory slice which // would prevent the entire slice from being eligible // for GC as soon as it's sent. continueHash := invMsg.InvList[invListLen-1].Hash sp.continueHash = &continueHash } sp.QueueMessage(invMsg, nil) } }
go
func (sp *serverPeer) OnGetBlocks(_ *peer.Peer, msg *wire.MsgGetBlocks) { // Find the most recent known block in the best chain based on the block // locator and fetch all of the block hashes after it until either // wire.MaxBlocksPerMsg have been fetched or the provided stop hash is // encountered. // // Use the block after the genesis block if no other blocks in the // provided locator are known. This does mean the client will start // over with the genesis block if unknown block locators are provided. // // This mirrors the behavior in the reference implementation. chain := sp.server.chain hashList := chain.LocateBlocks(msg.BlockLocatorHashes, &msg.HashStop, wire.MaxBlocksPerMsg) // Generate inventory message. invMsg := wire.NewMsgInv() for i := range hashList { iv := wire.NewInvVect(wire.InvTypeBlock, &hashList[i]) invMsg.AddInvVect(iv) } // Send the inventory message if there is anything to send. if len(invMsg.InvList) > 0 { invListLen := len(invMsg.InvList) if invListLen == wire.MaxBlocksPerMsg { // Intentionally use a copy of the final hash so there // is not a reference into the inventory slice which // would prevent the entire slice from being eligible // for GC as soon as it's sent. continueHash := invMsg.InvList[invListLen-1].Hash sp.continueHash = &continueHash } sp.QueueMessage(invMsg, nil) } }
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// OnGetBlocks is invoked when a peer receives a getblocks bitcoin // message.
[ "OnGetBlocks", "is", "invoked", "when", "a", "peer", "receives", "a", "getblocks", "bitcoin", "message", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L731-L766
train
btcsuite/btcd
server.go
OnGetHeaders
func (sp *serverPeer) OnGetHeaders(_ *peer.Peer, msg *wire.MsgGetHeaders) { // Ignore getheaders requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // Find the most recent known block in the best chain based on the block // locator and fetch all of the headers after it until either // wire.MaxBlockHeadersPerMsg have been fetched or the provided stop // hash is encountered. // // Use the block after the genesis block if no other blocks in the // provided locator are known. This does mean the client will start // over with the genesis block if unknown block locators are provided. // // This mirrors the behavior in the reference implementation. chain := sp.server.chain headers := chain.LocateHeaders(msg.BlockLocatorHashes, &msg.HashStop) // Send found headers to the requesting peer. blockHeaders := make([]*wire.BlockHeader, len(headers)) for i := range headers { blockHeaders[i] = &headers[i] } sp.QueueMessage(&wire.MsgHeaders{Headers: blockHeaders}, nil) }
go
func (sp *serverPeer) OnGetHeaders(_ *peer.Peer, msg *wire.MsgGetHeaders) { // Ignore getheaders requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // Find the most recent known block in the best chain based on the block // locator and fetch all of the headers after it until either // wire.MaxBlockHeadersPerMsg have been fetched or the provided stop // hash is encountered. // // Use the block after the genesis block if no other blocks in the // provided locator are known. This does mean the client will start // over with the genesis block if unknown block locators are provided. // // This mirrors the behavior in the reference implementation. chain := sp.server.chain headers := chain.LocateHeaders(msg.BlockLocatorHashes, &msg.HashStop) // Send found headers to the requesting peer. blockHeaders := make([]*wire.BlockHeader, len(headers)) for i := range headers { blockHeaders[i] = &headers[i] } sp.QueueMessage(&wire.MsgHeaders{Headers: blockHeaders}, nil) }
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// OnGetHeaders is invoked when a peer receives a getheaders bitcoin // message.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L770-L795
train
btcsuite/btcd
server.go
OnGetCFilters
func (sp *serverPeer) OnGetCFilters(_ *peer.Peer, msg *wire.MsgGetCFilters) { // Ignore getcfilters requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // We'll also ensure that the remote party is requesting a set of // filters that we actually currently maintain. switch msg.FilterType { case wire.GCSFilterRegular: break default: peerLog.Debug("Filter request for unknown filter: %v", msg.FilterType) return } hashes, err := sp.server.chain.HeightToHashRange( int32(msg.StartHeight), &msg.StopHash, wire.MaxGetCFiltersReqRange, ) if err != nil { peerLog.Debugf("Invalid getcfilters request: %v", err) return } // Create []*chainhash.Hash from []chainhash.Hash to pass to // FiltersByBlockHashes. hashPtrs := make([]*chainhash.Hash, len(hashes)) for i := range hashes { hashPtrs[i] = &hashes[i] } filters, err := sp.server.cfIndex.FiltersByBlockHashes( hashPtrs, msg.FilterType, ) if err != nil { peerLog.Errorf("Error retrieving cfilters: %v", err) return } for i, filterBytes := range filters { if len(filterBytes) == 0 { peerLog.Warnf("Could not obtain cfilter for %v", hashes[i]) return } filterMsg := wire.NewMsgCFilter( msg.FilterType, &hashes[i], filterBytes, ) sp.QueueMessage(filterMsg, nil) } }
go
func (sp *serverPeer) OnGetCFilters(_ *peer.Peer, msg *wire.MsgGetCFilters) { // Ignore getcfilters requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // We'll also ensure that the remote party is requesting a set of // filters that we actually currently maintain. switch msg.FilterType { case wire.GCSFilterRegular: break default: peerLog.Debug("Filter request for unknown filter: %v", msg.FilterType) return } hashes, err := sp.server.chain.HeightToHashRange( int32(msg.StartHeight), &msg.StopHash, wire.MaxGetCFiltersReqRange, ) if err != nil { peerLog.Debugf("Invalid getcfilters request: %v", err) return } // Create []*chainhash.Hash from []chainhash.Hash to pass to // FiltersByBlockHashes. hashPtrs := make([]*chainhash.Hash, len(hashes)) for i := range hashes { hashPtrs[i] = &hashes[i] } filters, err := sp.server.cfIndex.FiltersByBlockHashes( hashPtrs, msg.FilterType, ) if err != nil { peerLog.Errorf("Error retrieving cfilters: %v", err) return } for i, filterBytes := range filters { if len(filterBytes) == 0 { peerLog.Warnf("Could not obtain cfilter for %v", hashes[i]) return } filterMsg := wire.NewMsgCFilter( msg.FilterType, &hashes[i], filterBytes, ) sp.QueueMessage(filterMsg, nil) } }
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// OnGetCFilters is invoked when a peer receives a getcfilters bitcoin message.
[ "OnGetCFilters", "is", "invoked", "when", "a", "peer", "receives", "a", "getcfilters", "bitcoin", "message", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L798-L851
train
btcsuite/btcd
server.go
OnGetCFHeaders
func (sp *serverPeer) OnGetCFHeaders(_ *peer.Peer, msg *wire.MsgGetCFHeaders) { // Ignore getcfilterheader requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // We'll also ensure that the remote party is requesting a set of // headers for filters that we actually currently maintain. switch msg.FilterType { case wire.GCSFilterRegular: break default: peerLog.Debug("Filter request for unknown headers for "+ "filter: %v", msg.FilterType) return } startHeight := int32(msg.StartHeight) maxResults := wire.MaxCFHeadersPerMsg // If StartHeight is positive, fetch the predecessor block hash so we // can populate the PrevFilterHeader field. if msg.StartHeight > 0 { startHeight-- maxResults++ } // Fetch the hashes from the block index. hashList, err := sp.server.chain.HeightToHashRange( startHeight, &msg.StopHash, maxResults, ) if err != nil { peerLog.Debugf("Invalid getcfheaders request: %v", err) } // This is possible if StartHeight is one greater that the height of // StopHash, and we pull a valid range of hashes including the previous // filter header. if len(hashList) == 0 || (msg.StartHeight > 0 && len(hashList) == 1) { peerLog.Debug("No results for getcfheaders request") return } // Create []*chainhash.Hash from []chainhash.Hash to pass to // FilterHeadersByBlockHashes. hashPtrs := make([]*chainhash.Hash, len(hashList)) for i := range hashList { hashPtrs[i] = &hashList[i] } // Fetch the raw filter hash bytes from the database for all blocks. filterHashes, err := sp.server.cfIndex.FilterHashesByBlockHashes( hashPtrs, msg.FilterType, ) if err != nil { peerLog.Errorf("Error retrieving cfilter hashes: %v", err) return } // Generate cfheaders message and send it. headersMsg := wire.NewMsgCFHeaders() // Populate the PrevFilterHeader field. if msg.StartHeight > 0 { prevBlockHash := &hashList[0] // Fetch the raw committed filter header bytes from the // database. headerBytes, err := sp.server.cfIndex.FilterHeaderByBlockHash( prevBlockHash, msg.FilterType) if err != nil { peerLog.Errorf("Error retrieving CF header: %v", err) return } if len(headerBytes) == 0 { peerLog.Warnf("Could not obtain CF header for %v", prevBlockHash) return } // Deserialize the hash into PrevFilterHeader. err = headersMsg.PrevFilterHeader.SetBytes(headerBytes) if err != nil { peerLog.Warnf("Committed filter header deserialize "+ "failed: %v", err) return } hashList = hashList[1:] filterHashes = filterHashes[1:] } // Populate HeaderHashes. for i, hashBytes := range filterHashes { if len(hashBytes) == 0 { peerLog.Warnf("Could not obtain CF hash for %v", hashList[i]) return } // Deserialize the hash. filterHash, err := chainhash.NewHash(hashBytes) if err != nil { peerLog.Warnf("Committed filter hash deserialize "+ "failed: %v", err) return } headersMsg.AddCFHash(filterHash) } headersMsg.FilterType = msg.FilterType headersMsg.StopHash = msg.StopHash sp.QueueMessage(headersMsg, nil) }
go
func (sp *serverPeer) OnGetCFHeaders(_ *peer.Peer, msg *wire.MsgGetCFHeaders) { // Ignore getcfilterheader requests if not in sync. if !sp.server.syncManager.IsCurrent() { return } // We'll also ensure that the remote party is requesting a set of // headers for filters that we actually currently maintain. switch msg.FilterType { case wire.GCSFilterRegular: break default: peerLog.Debug("Filter request for unknown headers for "+ "filter: %v", msg.FilterType) return } startHeight := int32(msg.StartHeight) maxResults := wire.MaxCFHeadersPerMsg // If StartHeight is positive, fetch the predecessor block hash so we // can populate the PrevFilterHeader field. if msg.StartHeight > 0 { startHeight-- maxResults++ } // Fetch the hashes from the block index. hashList, err := sp.server.chain.HeightToHashRange( startHeight, &msg.StopHash, maxResults, ) if err != nil { peerLog.Debugf("Invalid getcfheaders request: %v", err) } // This is possible if StartHeight is one greater that the height of // StopHash, and we pull a valid range of hashes including the previous // filter header. if len(hashList) == 0 || (msg.StartHeight > 0 && len(hashList) == 1) { peerLog.Debug("No results for getcfheaders request") return } // Create []*chainhash.Hash from []chainhash.Hash to pass to // FilterHeadersByBlockHashes. hashPtrs := make([]*chainhash.Hash, len(hashList)) for i := range hashList { hashPtrs[i] = &hashList[i] } // Fetch the raw filter hash bytes from the database for all blocks. filterHashes, err := sp.server.cfIndex.FilterHashesByBlockHashes( hashPtrs, msg.FilterType, ) if err != nil { peerLog.Errorf("Error retrieving cfilter hashes: %v", err) return } // Generate cfheaders message and send it. headersMsg := wire.NewMsgCFHeaders() // Populate the PrevFilterHeader field. if msg.StartHeight > 0 { prevBlockHash := &hashList[0] // Fetch the raw committed filter header bytes from the // database. headerBytes, err := sp.server.cfIndex.FilterHeaderByBlockHash( prevBlockHash, msg.FilterType) if err != nil { peerLog.Errorf("Error retrieving CF header: %v", err) return } if len(headerBytes) == 0 { peerLog.Warnf("Could not obtain CF header for %v", prevBlockHash) return } // Deserialize the hash into PrevFilterHeader. err = headersMsg.PrevFilterHeader.SetBytes(headerBytes) if err != nil { peerLog.Warnf("Committed filter header deserialize "+ "failed: %v", err) return } hashList = hashList[1:] filterHashes = filterHashes[1:] } // Populate HeaderHashes. for i, hashBytes := range filterHashes { if len(hashBytes) == 0 { peerLog.Warnf("Could not obtain CF hash for %v", hashList[i]) return } // Deserialize the hash. filterHash, err := chainhash.NewHash(hashBytes) if err != nil { peerLog.Warnf("Committed filter hash deserialize "+ "failed: %v", err) return } headersMsg.AddCFHash(filterHash) } headersMsg.FilterType = msg.FilterType headersMsg.StopHash = msg.StopHash sp.QueueMessage(headersMsg, nil) }
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// OnGetCFHeaders is invoked when a peer receives a getcfheader bitcoin message.
[ "OnGetCFHeaders", "is", "invoked", "when", "a", "peer", "receives", "a", "getcfheader", "bitcoin", "message", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L854-L968
train
btcsuite/btcd
server.go
enforceNodeBloomFlag
func (sp *serverPeer) enforceNodeBloomFlag(cmd string) bool { if sp.server.services&wire.SFNodeBloom != wire.SFNodeBloom { // Ban the peer if the protocol version is high enough that the // peer is knowingly violating the protocol and banning is // enabled. // // NOTE: Even though the addBanScore function already examines // whether or not banning is enabled, it is checked here as well // to ensure the violation is logged and the peer is // disconnected regardless. if sp.ProtocolVersion() >= wire.BIP0111Version && !cfg.DisableBanning { // Disconnect the peer regardless of whether it was // banned. sp.addBanScore(100, 0, cmd) sp.Disconnect() return false } // Disconnect the peer regardless of protocol version or banning // state. peerLog.Debugf("%s sent an unsupported %s request -- "+ "disconnecting", sp, cmd) sp.Disconnect() return false } return true }
go
func (sp *serverPeer) enforceNodeBloomFlag(cmd string) bool { if sp.server.services&wire.SFNodeBloom != wire.SFNodeBloom { // Ban the peer if the protocol version is high enough that the // peer is knowingly violating the protocol and banning is // enabled. // // NOTE: Even though the addBanScore function already examines // whether or not banning is enabled, it is checked here as well // to ensure the violation is logged and the peer is // disconnected regardless. if sp.ProtocolVersion() >= wire.BIP0111Version && !cfg.DisableBanning { // Disconnect the peer regardless of whether it was // banned. sp.addBanScore(100, 0, cmd) sp.Disconnect() return false } // Disconnect the peer regardless of protocol version or banning // state. peerLog.Debugf("%s sent an unsupported %s request -- "+ "disconnecting", sp, cmd) sp.Disconnect() return false } return true }
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// enforceNodeBloomFlag disconnects the peer if the server is not configured to // allow bloom filters. Additionally, if the peer has negotiated to a protocol // version that is high enough to observe the bloom filter service support bit, // it will be banned since it is intentionally violating the protocol.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1125-L1154
train
btcsuite/btcd
server.go
OnFeeFilter
func (sp *serverPeer) OnFeeFilter(_ *peer.Peer, msg *wire.MsgFeeFilter) { // Check that the passed minimum fee is a valid amount. if msg.MinFee < 0 || msg.MinFee > btcutil.MaxSatoshi { peerLog.Debugf("Peer %v sent an invalid feefilter '%v' -- "+ "disconnecting", sp, btcutil.Amount(msg.MinFee)) sp.Disconnect() return } atomic.StoreInt64(&sp.feeFilter, msg.MinFee) }
go
func (sp *serverPeer) OnFeeFilter(_ *peer.Peer, msg *wire.MsgFeeFilter) { // Check that the passed minimum fee is a valid amount. if msg.MinFee < 0 || msg.MinFee > btcutil.MaxSatoshi { peerLog.Debugf("Peer %v sent an invalid feefilter '%v' -- "+ "disconnecting", sp, btcutil.Amount(msg.MinFee)) sp.Disconnect() return } atomic.StoreInt64(&sp.feeFilter, msg.MinFee) }
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// OnFeeFilter is invoked when a peer receives a feefilter bitcoin message and // is used by remote peers to request that no transactions which have a fee rate // lower than provided value are inventoried to them. The peer will be // disconnected if an invalid fee filter value is provided.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1160-L1170
train
btcsuite/btcd
server.go
OnFilterAdd
func (sp *serverPeer) OnFilterAdd(_ *peer.Peer, msg *wire.MsgFilterAdd) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } if !sp.filter.IsLoaded() { peerLog.Debugf("%s sent a filteradd request with no filter "+ "loaded -- disconnecting", sp) sp.Disconnect() return } sp.filter.Add(msg.Data) }
go
func (sp *serverPeer) OnFilterAdd(_ *peer.Peer, msg *wire.MsgFilterAdd) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } if !sp.filter.IsLoaded() { peerLog.Debugf("%s sent a filteradd request with no filter "+ "loaded -- disconnecting", sp) sp.Disconnect() return } sp.filter.Add(msg.Data) }
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// OnFilterAdd is invoked when a peer receives a filteradd bitcoin // message and is used by remote peers to add data to an already loaded bloom // filter. The peer will be disconnected if a filter is not loaded when this // message is received or the server is not configured to allow bloom filters.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1176-L1191
train
btcsuite/btcd
server.go
OnFilterClear
func (sp *serverPeer) OnFilterClear(_ *peer.Peer, msg *wire.MsgFilterClear) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } if !sp.filter.IsLoaded() { peerLog.Debugf("%s sent a filterclear request with no "+ "filter loaded -- disconnecting", sp) sp.Disconnect() return } sp.filter.Unload() }
go
func (sp *serverPeer) OnFilterClear(_ *peer.Peer, msg *wire.MsgFilterClear) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } if !sp.filter.IsLoaded() { peerLog.Debugf("%s sent a filterclear request with no "+ "filter loaded -- disconnecting", sp) sp.Disconnect() return } sp.filter.Unload() }
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// OnFilterClear is invoked when a peer receives a filterclear bitcoin // message and is used by remote peers to clear an already loaded bloom filter. // The peer will be disconnected if a filter is not loaded when this message is // received or the server is not configured to allow bloom filters.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1197-L1212
train
btcsuite/btcd
server.go
OnFilterLoad
func (sp *serverPeer) OnFilterLoad(_ *peer.Peer, msg *wire.MsgFilterLoad) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } sp.setDisableRelayTx(false) sp.filter.Reload(msg) }
go
func (sp *serverPeer) OnFilterLoad(_ *peer.Peer, msg *wire.MsgFilterLoad) { // Disconnect and/or ban depending on the node bloom services flag and // negotiated protocol version. if !sp.enforceNodeBloomFlag(msg.Command()) { return } sp.setDisableRelayTx(false) sp.filter.Reload(msg) }
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// OnFilterLoad is invoked when a peer receives a filterload bitcoin // message and it used to load a bloom filter that should be used for // delivering merkle blocks and associated transactions that match the filter. // The peer will be disconnected if the server is not configured to allow bloom // filters.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1219-L1229
train
btcsuite/btcd
server.go
OnGetAddr
func (sp *serverPeer) OnGetAddr(_ *peer.Peer, msg *wire.MsgGetAddr) { // Don't return any addresses when running on the simulation test // network. This helps prevent the network from becoming another // public test network since it will not be able to learn about other // peers that have not specifically been provided. if cfg.SimNet { return } // Do not accept getaddr requests from outbound peers. This reduces // fingerprinting attacks. if !sp.Inbound() { peerLog.Debugf("Ignoring getaddr request from outbound peer ", "%v", sp) return } // Only allow one getaddr request per connection to discourage // address stamping of inv announcements. if sp.sentAddrs { peerLog.Debugf("Ignoring repeated getaddr request from peer ", "%v", sp) return } sp.sentAddrs = true // Get the current known addresses from the address manager. addrCache := sp.server.addrManager.AddressCache() // Push the addresses. sp.pushAddrMsg(addrCache) }
go
func (sp *serverPeer) OnGetAddr(_ *peer.Peer, msg *wire.MsgGetAddr) { // Don't return any addresses when running on the simulation test // network. This helps prevent the network from becoming another // public test network since it will not be able to learn about other // peers that have not specifically been provided. if cfg.SimNet { return } // Do not accept getaddr requests from outbound peers. This reduces // fingerprinting attacks. if !sp.Inbound() { peerLog.Debugf("Ignoring getaddr request from outbound peer ", "%v", sp) return } // Only allow one getaddr request per connection to discourage // address stamping of inv announcements. if sp.sentAddrs { peerLog.Debugf("Ignoring repeated getaddr request from peer ", "%v", sp) return } sp.sentAddrs = true // Get the current known addresses from the address manager. addrCache := sp.server.addrManager.AddressCache() // Push the addresses. sp.pushAddrMsg(addrCache) }
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// OnGetAddr is invoked when a peer receives a getaddr bitcoin message // and is used to provide the peer with known addresses from the address // manager.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1234-L1265
train
btcsuite/btcd
server.go
OnWrite
func (sp *serverPeer) OnWrite(_ *peer.Peer, bytesWritten int, msg wire.Message, err error) { sp.server.AddBytesSent(uint64(bytesWritten)) }
go
func (sp *serverPeer) OnWrite(_ *peer.Peer, bytesWritten int, msg wire.Message, err error) { sp.server.AddBytesSent(uint64(bytesWritten)) }
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// OnWrite is invoked when a peer sends a message and it is used to update // the bytes sent by the server.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1325-L1327
train
btcsuite/btcd
server.go
randomUint16Number
func randomUint16Number(max uint16) uint16 { // In order to avoid modulo bias and ensure every possible outcome in // [0, max) has equal probability, the random number must be sampled // from a random source that has a range limited to a multiple of the // modulus. var randomNumber uint16 var limitRange = (math.MaxUint16 / max) * max for { binary.Read(rand.Reader, binary.LittleEndian, &randomNumber) if randomNumber < limitRange { return (randomNumber % max) } } }
go
func randomUint16Number(max uint16) uint16 { // In order to avoid modulo bias and ensure every possible outcome in // [0, max) has equal probability, the random number must be sampled // from a random source that has a range limited to a multiple of the // modulus. var randomNumber uint16 var limitRange = (math.MaxUint16 / max) * max for { binary.Read(rand.Reader, binary.LittleEndian, &randomNumber) if randomNumber < limitRange { return (randomNumber % max) } } }
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// randomUint16Number returns a random uint16 in a specified input range. Note // that the range is in zeroth ordering; if you pass it 1800, you will get // values from 0 to 1800.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1332-L1345
train
btcsuite/btcd
server.go
AddRebroadcastInventory
func (s *server) AddRebroadcastInventory(iv *wire.InvVect, data interface{}) { // Ignore if shutting down. if atomic.LoadInt32(&s.shutdown) != 0 { return } s.modifyRebroadcastInv <- broadcastInventoryAdd{invVect: iv, data: data} }
go
func (s *server) AddRebroadcastInventory(iv *wire.InvVect, data interface{}) { // Ignore if shutting down. if atomic.LoadInt32(&s.shutdown) != 0 { return } s.modifyRebroadcastInv <- broadcastInventoryAdd{invVect: iv, data: data} }
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// AddRebroadcastInventory adds 'iv' to the list of inventories to be // rebroadcasted at random intervals until they show up in a block.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1349-L1356
train
btcsuite/btcd
server.go
RemoveRebroadcastInventory
func (s *server) RemoveRebroadcastInventory(iv *wire.InvVect) { // Ignore if shutting down. if atomic.LoadInt32(&s.shutdown) != 0 { return } s.modifyRebroadcastInv <- broadcastInventoryDel(iv) }
go
func (s *server) RemoveRebroadcastInventory(iv *wire.InvVect) { // Ignore if shutting down. if atomic.LoadInt32(&s.shutdown) != 0 { return } s.modifyRebroadcastInv <- broadcastInventoryDel(iv) }
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// RemoveRebroadcastInventory removes 'iv' from the list of items to be // rebroadcasted if present.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1360-L1367
train
btcsuite/btcd
server.go
relayTransactions
func (s *server) relayTransactions(txns []*mempool.TxDesc) { for _, txD := range txns { iv := wire.NewInvVect(wire.InvTypeTx, txD.Tx.Hash()) s.RelayInventory(iv, txD) } }
go
func (s *server) relayTransactions(txns []*mempool.TxDesc) { for _, txD := range txns { iv := wire.NewInvVect(wire.InvTypeTx, txD.Tx.Hash()) s.RelayInventory(iv, txD) } }
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// relayTransactions generates and relays inventory vectors for all of the // passed transactions to all connected peers.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1371-L1376
train
btcsuite/btcd
server.go
AnnounceNewTransactions
func (s *server) AnnounceNewTransactions(txns []*mempool.TxDesc) { // Generate and relay inventory vectors for all newly accepted // transactions. s.relayTransactions(txns) // Notify both websocket and getblocktemplate long poll clients of all // newly accepted transactions. if s.rpcServer != nil { s.rpcServer.NotifyNewTransactions(txns) } }
go
func (s *server) AnnounceNewTransactions(txns []*mempool.TxDesc) { // Generate and relay inventory vectors for all newly accepted // transactions. s.relayTransactions(txns) // Notify both websocket and getblocktemplate long poll clients of all // newly accepted transactions. if s.rpcServer != nil { s.rpcServer.NotifyNewTransactions(txns) } }
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// AnnounceNewTransactions generates and relays inventory vectors and notifies // both websocket and getblocktemplate long poll clients of the passed // transactions. This function should be called whenever new transactions // are added to the mempool.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1382-L1392
train
btcsuite/btcd
server.go
TransactionConfirmed
func (s *server) TransactionConfirmed(tx *btcutil.Tx) { // Rebroadcasting is only necessary when the RPC server is active. if s.rpcServer == nil { return } iv := wire.NewInvVect(wire.InvTypeTx, tx.Hash()) s.RemoveRebroadcastInventory(iv) }
go
func (s *server) TransactionConfirmed(tx *btcutil.Tx) { // Rebroadcasting is only necessary when the RPC server is active. if s.rpcServer == nil { return } iv := wire.NewInvVect(wire.InvTypeTx, tx.Hash()) s.RemoveRebroadcastInventory(iv) }
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// Transaction has one confirmation on the main chain. Now we can mark it as no // longer needing rebroadcasting.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1396-L1404
train
btcsuite/btcd
server.go
pushTxMsg
func (s *server) pushTxMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Attempt to fetch the requested transaction from the pool. A // call could be made to check for existence first, but simply trying // to fetch a missing transaction results in the same behavior. tx, err := s.txMemPool.FetchTransaction(hash) if err != nil { peerLog.Tracef("Unable to fetch tx %v from transaction "+ "pool: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } sp.QueueMessageWithEncoding(tx.MsgTx(), doneChan, encoding) return nil }
go
func (s *server) pushTxMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Attempt to fetch the requested transaction from the pool. A // call could be made to check for existence first, but simply trying // to fetch a missing transaction results in the same behavior. tx, err := s.txMemPool.FetchTransaction(hash) if err != nil { peerLog.Tracef("Unable to fetch tx %v from transaction "+ "pool: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } sp.QueueMessageWithEncoding(tx.MsgTx(), doneChan, encoding) return nil }
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// pushTxMsg sends a tx message for the provided transaction hash to the // connected peer. An error is returned if the transaction hash is not known.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1408-L1433
train
btcsuite/btcd
server.go
pushBlockMsg
func (s *server) pushBlockMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Fetch the raw block bytes from the database. var blockBytes []byte err := sp.server.db.View(func(dbTx database.Tx) error { var err error blockBytes, err = dbTx.FetchBlock(hash) return err }) if err != nil { peerLog.Tracef("Unable to fetch requested block hash %v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Deserialize the block. var msgBlock wire.MsgBlock err = msgBlock.Deserialize(bytes.NewReader(blockBytes)) if err != nil { peerLog.Tracef("Unable to deserialize requested block hash "+ "%v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } // We only send the channel for this message if we aren't sending // an inv straight after. var dc chan<- struct{} continueHash := sp.continueHash sendInv := continueHash != nil && continueHash.IsEqual(hash) if !sendInv { dc = doneChan } sp.QueueMessageWithEncoding(&msgBlock, dc, encoding) // When the peer requests the final block that was advertised in // response to a getblocks message which requested more blocks than // would fit into a single message, send it a new inventory message // to trigger it to issue another getblocks message for the next // batch of inventory. if sendInv { best := sp.server.chain.BestSnapshot() invMsg := wire.NewMsgInvSizeHint(1) iv := wire.NewInvVect(wire.InvTypeBlock, &best.Hash) invMsg.AddInvVect(iv) sp.QueueMessage(invMsg, doneChan) sp.continueHash = nil } return nil }
go
func (s *server) pushBlockMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Fetch the raw block bytes from the database. var blockBytes []byte err := sp.server.db.View(func(dbTx database.Tx) error { var err error blockBytes, err = dbTx.FetchBlock(hash) return err }) if err != nil { peerLog.Tracef("Unable to fetch requested block hash %v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Deserialize the block. var msgBlock wire.MsgBlock err = msgBlock.Deserialize(bytes.NewReader(blockBytes)) if err != nil { peerLog.Tracef("Unable to deserialize requested block hash "+ "%v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } // We only send the channel for this message if we aren't sending // an inv straight after. var dc chan<- struct{} continueHash := sp.continueHash sendInv := continueHash != nil && continueHash.IsEqual(hash) if !sendInv { dc = doneChan } sp.QueueMessageWithEncoding(&msgBlock, dc, encoding) // When the peer requests the final block that was advertised in // response to a getblocks message which requested more blocks than // would fit into a single message, send it a new inventory message // to trigger it to issue another getblocks message for the next // batch of inventory. if sendInv { best := sp.server.chain.BestSnapshot() invMsg := wire.NewMsgInvSizeHint(1) iv := wire.NewInvVect(wire.InvTypeBlock, &best.Hash) invMsg.AddInvVect(iv) sp.QueueMessage(invMsg, doneChan) sp.continueHash = nil } return nil }
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// pushBlockMsg sends a block message for the provided block hash to the // connected peer. An error is returned if the block hash is not known.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1437-L1499
train
btcsuite/btcd
server.go
pushMerkleBlockMsg
func (s *server) pushMerkleBlockMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Do not send a response if the peer doesn't have a filter loaded. if !sp.filter.IsLoaded() { if doneChan != nil { doneChan <- struct{}{} } return nil } // Fetch the raw block bytes from the database. blk, err := sp.server.chain.BlockByHash(hash) if err != nil { peerLog.Tracef("Unable to fetch requested block hash %v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Generate a merkle block by filtering the requested block according // to the filter for the peer. merkle, matchedTxIndices := bloom.NewMerkleBlock(blk, sp.filter) // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } // Send the merkleblock. Only send the done channel with this message // if no transactions will be sent afterwards. var dc chan<- struct{} if len(matchedTxIndices) == 0 { dc = doneChan } sp.QueueMessage(merkle, dc) // Finally, send any matched transactions. blkTransactions := blk.MsgBlock().Transactions for i, txIndex := range matchedTxIndices { // Only send the done channel on the final transaction. var dc chan<- struct{} if i == len(matchedTxIndices)-1 { dc = doneChan } if txIndex < uint32(len(blkTransactions)) { sp.QueueMessageWithEncoding(blkTransactions[txIndex], dc, encoding) } } return nil }
go
func (s *server) pushMerkleBlockMsg(sp *serverPeer, hash *chainhash.Hash, doneChan chan<- struct{}, waitChan <-chan struct{}, encoding wire.MessageEncoding) error { // Do not send a response if the peer doesn't have a filter loaded. if !sp.filter.IsLoaded() { if doneChan != nil { doneChan <- struct{}{} } return nil } // Fetch the raw block bytes from the database. blk, err := sp.server.chain.BlockByHash(hash) if err != nil { peerLog.Tracef("Unable to fetch requested block hash %v: %v", hash, err) if doneChan != nil { doneChan <- struct{}{} } return err } // Generate a merkle block by filtering the requested block according // to the filter for the peer. merkle, matchedTxIndices := bloom.NewMerkleBlock(blk, sp.filter) // Once we have fetched data wait for any previous operation to finish. if waitChan != nil { <-waitChan } // Send the merkleblock. Only send the done channel with this message // if no transactions will be sent afterwards. var dc chan<- struct{} if len(matchedTxIndices) == 0 { dc = doneChan } sp.QueueMessage(merkle, dc) // Finally, send any matched transactions. blkTransactions := blk.MsgBlock().Transactions for i, txIndex := range matchedTxIndices { // Only send the done channel on the final transaction. var dc chan<- struct{} if i == len(matchedTxIndices)-1 { dc = doneChan } if txIndex < uint32(len(blkTransactions)) { sp.QueueMessageWithEncoding(blkTransactions[txIndex], dc, encoding) } } return nil }
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// pushMerkleBlockMsg sends a merkleblock message for the provided block hash to // the connected peer. Since a merkle block requires the peer to have a filter // loaded, this call will simply be ignored if there is no filter loaded. An // error is returned if the block hash is not known.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1505-L1560
train
btcsuite/btcd
server.go
handleRelayInvMsg
func (s *server) handleRelayInvMsg(state *peerState, msg relayMsg) { state.forAllPeers(func(sp *serverPeer) { if !sp.Connected() { return } // If the inventory is a block and the peer prefers headers, // generate and send a headers message instead of an inventory // message. if msg.invVect.Type == wire.InvTypeBlock && sp.WantsHeaders() { blockHeader, ok := msg.data.(wire.BlockHeader) if !ok { peerLog.Warnf("Underlying data for headers" + " is not a block header") return } msgHeaders := wire.NewMsgHeaders() if err := msgHeaders.AddBlockHeader(&blockHeader); err != nil { peerLog.Errorf("Failed to add block"+ " header: %v", err) return } sp.QueueMessage(msgHeaders, nil) return } if msg.invVect.Type == wire.InvTypeTx { // Don't relay the transaction to the peer when it has // transaction relaying disabled. if sp.relayTxDisabled() { return } txD, ok := msg.data.(*mempool.TxDesc) if !ok { peerLog.Warnf("Underlying data for tx inv "+ "relay is not a *mempool.TxDesc: %T", msg.data) return } // Don't relay the transaction if the transaction fee-per-kb // is less than the peer's feefilter. feeFilter := atomic.LoadInt64(&sp.feeFilter) if feeFilter > 0 && txD.FeePerKB < feeFilter { return } // Don't relay the transaction if there is a bloom // filter loaded and the transaction doesn't match it. if sp.filter.IsLoaded() { if !sp.filter.MatchTxAndUpdate(txD.Tx) { return } } } // Queue the inventory to be relayed with the next batch. // It will be ignored if the peer is already known to // have the inventory. sp.QueueInventory(msg.invVect) }) }
go
func (s *server) handleRelayInvMsg(state *peerState, msg relayMsg) { state.forAllPeers(func(sp *serverPeer) { if !sp.Connected() { return } // If the inventory is a block and the peer prefers headers, // generate and send a headers message instead of an inventory // message. if msg.invVect.Type == wire.InvTypeBlock && sp.WantsHeaders() { blockHeader, ok := msg.data.(wire.BlockHeader) if !ok { peerLog.Warnf("Underlying data for headers" + " is not a block header") return } msgHeaders := wire.NewMsgHeaders() if err := msgHeaders.AddBlockHeader(&blockHeader); err != nil { peerLog.Errorf("Failed to add block"+ " header: %v", err) return } sp.QueueMessage(msgHeaders, nil) return } if msg.invVect.Type == wire.InvTypeTx { // Don't relay the transaction to the peer when it has // transaction relaying disabled. if sp.relayTxDisabled() { return } txD, ok := msg.data.(*mempool.TxDesc) if !ok { peerLog.Warnf("Underlying data for tx inv "+ "relay is not a *mempool.TxDesc: %T", msg.data) return } // Don't relay the transaction if the transaction fee-per-kb // is less than the peer's feefilter. feeFilter := atomic.LoadInt64(&sp.feeFilter) if feeFilter > 0 && txD.FeePerKB < feeFilter { return } // Don't relay the transaction if there is a bloom // filter loaded and the transaction doesn't match it. if sp.filter.IsLoaded() { if !sp.filter.MatchTxAndUpdate(txD.Tx) { return } } } // Queue the inventory to be relayed with the next batch. // It will be ignored if the peer is already known to // have the inventory. sp.QueueInventory(msg.invVect) }) }
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// handleRelayInvMsg deals with relaying inventory to peers that are not already // known to have it. It is invoked from the peerHandler goroutine.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1710-L1772
train
btcsuite/btcd
server.go
handleBroadcastMsg
func (s *server) handleBroadcastMsg(state *peerState, bmsg *broadcastMsg) { state.forAllPeers(func(sp *serverPeer) { if !sp.Connected() { return } for _, ep := range bmsg.excludePeers { if sp == ep { return } } sp.QueueMessage(bmsg.message, nil) }) }
go
func (s *server) handleBroadcastMsg(state *peerState, bmsg *broadcastMsg) { state.forAllPeers(func(sp *serverPeer) { if !sp.Connected() { return } for _, ep := range bmsg.excludePeers { if sp == ep { return } } sp.QueueMessage(bmsg.message, nil) }) }
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// handleBroadcastMsg deals with broadcasting messages to peers. It is invoked // from the peerHandler goroutine.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1776-L1790
train
btcsuite/btcd
server.go
newPeerConfig
func newPeerConfig(sp *serverPeer) *peer.Config { return &peer.Config{ Listeners: peer.MessageListeners{ OnVersion: sp.OnVersion, OnMemPool: sp.OnMemPool, OnTx: sp.OnTx, OnBlock: sp.OnBlock, OnInv: sp.OnInv, OnHeaders: sp.OnHeaders, OnGetData: sp.OnGetData, OnGetBlocks: sp.OnGetBlocks, OnGetHeaders: sp.OnGetHeaders, OnGetCFilters: sp.OnGetCFilters, OnGetCFHeaders: sp.OnGetCFHeaders, OnGetCFCheckpt: sp.OnGetCFCheckpt, OnFeeFilter: sp.OnFeeFilter, OnFilterAdd: sp.OnFilterAdd, OnFilterClear: sp.OnFilterClear, OnFilterLoad: sp.OnFilterLoad, OnGetAddr: sp.OnGetAddr, OnAddr: sp.OnAddr, OnRead: sp.OnRead, OnWrite: sp.OnWrite, // Note: The reference client currently bans peers that send alerts // not signed with its key. We could verify against their key, but // since the reference client is currently unwilling to support // other implementations' alert messages, we will not relay theirs. OnAlert: nil, }, NewestBlock: sp.newestBlock, HostToNetAddress: sp.server.addrManager.HostToNetAddress, Proxy: cfg.Proxy, UserAgentName: userAgentName, UserAgentVersion: userAgentVersion, UserAgentComments: cfg.UserAgentComments, ChainParams: sp.server.chainParams, Services: sp.server.services, DisableRelayTx: cfg.BlocksOnly, ProtocolVersion: peer.MaxProtocolVersion, TrickleInterval: cfg.TrickleInterval, } }
go
func newPeerConfig(sp *serverPeer) *peer.Config { return &peer.Config{ Listeners: peer.MessageListeners{ OnVersion: sp.OnVersion, OnMemPool: sp.OnMemPool, OnTx: sp.OnTx, OnBlock: sp.OnBlock, OnInv: sp.OnInv, OnHeaders: sp.OnHeaders, OnGetData: sp.OnGetData, OnGetBlocks: sp.OnGetBlocks, OnGetHeaders: sp.OnGetHeaders, OnGetCFilters: sp.OnGetCFilters, OnGetCFHeaders: sp.OnGetCFHeaders, OnGetCFCheckpt: sp.OnGetCFCheckpt, OnFeeFilter: sp.OnFeeFilter, OnFilterAdd: sp.OnFilterAdd, OnFilterClear: sp.OnFilterClear, OnFilterLoad: sp.OnFilterLoad, OnGetAddr: sp.OnGetAddr, OnAddr: sp.OnAddr, OnRead: sp.OnRead, OnWrite: sp.OnWrite, // Note: The reference client currently bans peers that send alerts // not signed with its key. We could verify against their key, but // since the reference client is currently unwilling to support // other implementations' alert messages, we will not relay theirs. OnAlert: nil, }, NewestBlock: sp.newestBlock, HostToNetAddress: sp.server.addrManager.HostToNetAddress, Proxy: cfg.Proxy, UserAgentName: userAgentName, UserAgentVersion: userAgentVersion, UserAgentComments: cfg.UserAgentComments, ChainParams: sp.server.chainParams, Services: sp.server.services, DisableRelayTx: cfg.BlocksOnly, ProtocolVersion: peer.MaxProtocolVersion, TrickleInterval: cfg.TrickleInterval, } }
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// newPeerConfig returns the configuration for the given serverPeer.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L1962-L2004
train
btcsuite/btcd
server.go
inboundPeerConnected
func (s *server) inboundPeerConnected(conn net.Conn) { sp := newServerPeer(s, false) sp.isWhitelisted = isWhitelisted(conn.RemoteAddr()) sp.Peer = peer.NewInboundPeer(newPeerConfig(sp)) sp.AssociateConnection(conn) go s.peerDoneHandler(sp) }
go
func (s *server) inboundPeerConnected(conn net.Conn) { sp := newServerPeer(s, false) sp.isWhitelisted = isWhitelisted(conn.RemoteAddr()) sp.Peer = peer.NewInboundPeer(newPeerConfig(sp)) sp.AssociateConnection(conn) go s.peerDoneHandler(sp) }
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// inboundPeerConnected is invoked by the connection manager when a new inbound // connection is established. It initializes a new inbound server peer // instance, associates it with the connection, and starts a goroutine to wait // for disconnection.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2010-L2016
train
btcsuite/btcd
server.go
RelayInventory
func (s *server) RelayInventory(invVect *wire.InvVect, data interface{}) { s.relayInv <- relayMsg{invVect: invVect, data: data} }
go
func (s *server) RelayInventory(invVect *wire.InvVect, data interface{}) { s.relayInv <- relayMsg{invVect: invVect, data: data} }
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// RelayInventory relays the passed inventory vector to all connected peers // that are not already known to have it.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2171-L2173
train
btcsuite/btcd
server.go
BroadcastMessage
func (s *server) BroadcastMessage(msg wire.Message, exclPeers ...*serverPeer) { // XXX: Need to determine if this is an alert that has already been // broadcast and refrain from broadcasting again. bmsg := broadcastMsg{message: msg, excludePeers: exclPeers} s.broadcast <- bmsg }
go
func (s *server) BroadcastMessage(msg wire.Message, exclPeers ...*serverPeer) { // XXX: Need to determine if this is an alert that has already been // broadcast and refrain from broadcasting again. bmsg := broadcastMsg{message: msg, excludePeers: exclPeers} s.broadcast <- bmsg }
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// BroadcastMessage sends msg to all peers currently connected to the server // except those in the passed peers to exclude.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2177-L2182
train
btcsuite/btcd
server.go
rebroadcastHandler
func (s *server) rebroadcastHandler() { // Wait 5 min before first tx rebroadcast. timer := time.NewTimer(5 * time.Minute) pendingInvs := make(map[wire.InvVect]interface{}) out: for { select { case riv := <-s.modifyRebroadcastInv: switch msg := riv.(type) { // Incoming InvVects are added to our map of RPC txs. case broadcastInventoryAdd: pendingInvs[*msg.invVect] = msg.data // When an InvVect has been added to a block, we can // now remove it, if it was present. case broadcastInventoryDel: if _, ok := pendingInvs[*msg]; ok { delete(pendingInvs, *msg) } } case <-timer.C: // Any inventory we have has not made it into a block // yet. We periodically resubmit them until they have. for iv, data := range pendingInvs { ivCopy := iv s.RelayInventory(&ivCopy, data) } // Process at a random time up to 30mins (in seconds) // in the future. timer.Reset(time.Second * time.Duration(randomUint16Number(1800))) case <-s.quit: break out } } timer.Stop() // Drain channels before exiting so nothing is left waiting around // to send. cleanup: for { select { case <-s.modifyRebroadcastInv: default: break cleanup } } s.wg.Done() }
go
func (s *server) rebroadcastHandler() { // Wait 5 min before first tx rebroadcast. timer := time.NewTimer(5 * time.Minute) pendingInvs := make(map[wire.InvVect]interface{}) out: for { select { case riv := <-s.modifyRebroadcastInv: switch msg := riv.(type) { // Incoming InvVects are added to our map of RPC txs. case broadcastInventoryAdd: pendingInvs[*msg.invVect] = msg.data // When an InvVect has been added to a block, we can // now remove it, if it was present. case broadcastInventoryDel: if _, ok := pendingInvs[*msg]; ok { delete(pendingInvs, *msg) } } case <-timer.C: // Any inventory we have has not made it into a block // yet. We periodically resubmit them until they have. for iv, data := range pendingInvs { ivCopy := iv s.RelayInventory(&ivCopy, data) } // Process at a random time up to 30mins (in seconds) // in the future. timer.Reset(time.Second * time.Duration(randomUint16Number(1800))) case <-s.quit: break out } } timer.Stop() // Drain channels before exiting so nothing is left waiting around // to send. cleanup: for { select { case <-s.modifyRebroadcastInv: default: break cleanup } } s.wg.Done() }
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// rebroadcastHandler keeps track of user submitted inventories that we have // sent out but have not yet made it into a block. We periodically rebroadcast // them in case our peers restarted or otherwise lost track of them.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2235-L2288
train
btcsuite/btcd
server.go
Start
func (s *server) Start() { // Already started? if atomic.AddInt32(&s.started, 1) != 1 { return } srvrLog.Trace("Starting server") // Server startup time. Used for the uptime command for uptime calculation. s.startupTime = time.Now().Unix() // Start the peer handler which in turn starts the address and block // managers. s.wg.Add(1) go s.peerHandler() if s.nat != nil { s.wg.Add(1) go s.upnpUpdateThread() } if !cfg.DisableRPC { s.wg.Add(1) // Start the rebroadcastHandler, which ensures user tx received by // the RPC server are rebroadcast until being included in a block. go s.rebroadcastHandler() s.rpcServer.Start() } // Start the CPU miner if generation is enabled. if cfg.Generate { s.cpuMiner.Start() } }
go
func (s *server) Start() { // Already started? if atomic.AddInt32(&s.started, 1) != 1 { return } srvrLog.Trace("Starting server") // Server startup time. Used for the uptime command for uptime calculation. s.startupTime = time.Now().Unix() // Start the peer handler which in turn starts the address and block // managers. s.wg.Add(1) go s.peerHandler() if s.nat != nil { s.wg.Add(1) go s.upnpUpdateThread() } if !cfg.DisableRPC { s.wg.Add(1) // Start the rebroadcastHandler, which ensures user tx received by // the RPC server are rebroadcast until being included in a block. go s.rebroadcastHandler() s.rpcServer.Start() } // Start the CPU miner if generation is enabled. if cfg.Generate { s.cpuMiner.Start() } }
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// Start begins accepting connections from peers.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2291-L2326
train
btcsuite/btcd
server.go
ScheduleShutdown
func (s *server) ScheduleShutdown(duration time.Duration) { // Don't schedule shutdown more than once. if atomic.AddInt32(&s.shutdownSched, 1) != 1 { return } srvrLog.Warnf("Server shutdown in %v", duration) go func() { remaining := duration tickDuration := dynamicTickDuration(remaining) done := time.After(remaining) ticker := time.NewTicker(tickDuration) out: for { select { case <-done: ticker.Stop() s.Stop() break out case <-ticker.C: remaining = remaining - tickDuration if remaining < time.Second { continue } // Change tick duration dynamically based on remaining time. newDuration := dynamicTickDuration(remaining) if tickDuration != newDuration { tickDuration = newDuration ticker.Stop() ticker = time.NewTicker(tickDuration) } srvrLog.Warnf("Server shutdown in %v", remaining) } } }() }
go
func (s *server) ScheduleShutdown(duration time.Duration) { // Don't schedule shutdown more than once. if atomic.AddInt32(&s.shutdownSched, 1) != 1 { return } srvrLog.Warnf("Server shutdown in %v", duration) go func() { remaining := duration tickDuration := dynamicTickDuration(remaining) done := time.After(remaining) ticker := time.NewTicker(tickDuration) out: for { select { case <-done: ticker.Stop() s.Stop() break out case <-ticker.C: remaining = remaining - tickDuration if remaining < time.Second { continue } // Change tick duration dynamically based on remaining time. newDuration := dynamicTickDuration(remaining) if tickDuration != newDuration { tickDuration = newDuration ticker.Stop() ticker = time.NewTicker(tickDuration) } srvrLog.Warnf("Server shutdown in %v", remaining) } } }() }
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// ScheduleShutdown schedules a server shutdown after the specified duration. // It also dynamically adjusts how often to warn the server is going down based // on remaining duration.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2368-L2403
train
btcsuite/btcd
server.go
parseListeners
func parseListeners(addrs []string) ([]net.Addr, error) { netAddrs := make([]net.Addr, 0, len(addrs)*2) for _, addr := range addrs { host, _, err := net.SplitHostPort(addr) if err != nil { // Shouldn't happen due to already being normalized. return nil, err } // Empty host or host of * on plan9 is both IPv4 and IPv6. if host == "" || (host == "*" && runtime.GOOS == "plan9") { netAddrs = append(netAddrs, simpleAddr{net: "tcp4", addr: addr}) netAddrs = append(netAddrs, simpleAddr{net: "tcp6", addr: addr}) continue } // Strip IPv6 zone id if present since net.ParseIP does not // handle it. zoneIndex := strings.LastIndex(host, "%") if zoneIndex > 0 { host = host[:zoneIndex] } // Parse the IP. ip := net.ParseIP(host) if ip == nil { return nil, fmt.Errorf("'%s' is not a valid IP address", host) } // To4 returns nil when the IP is not an IPv4 address, so use // this determine the address type. if ip.To4() == nil { netAddrs = append(netAddrs, simpleAddr{net: "tcp6", addr: addr}) } else { netAddrs = append(netAddrs, simpleAddr{net: "tcp4", addr: addr}) } } return netAddrs, nil }
go
func parseListeners(addrs []string) ([]net.Addr, error) { netAddrs := make([]net.Addr, 0, len(addrs)*2) for _, addr := range addrs { host, _, err := net.SplitHostPort(addr) if err != nil { // Shouldn't happen due to already being normalized. return nil, err } // Empty host or host of * on plan9 is both IPv4 and IPv6. if host == "" || (host == "*" && runtime.GOOS == "plan9") { netAddrs = append(netAddrs, simpleAddr{net: "tcp4", addr: addr}) netAddrs = append(netAddrs, simpleAddr{net: "tcp6", addr: addr}) continue } // Strip IPv6 zone id if present since net.ParseIP does not // handle it. zoneIndex := strings.LastIndex(host, "%") if zoneIndex > 0 { host = host[:zoneIndex] } // Parse the IP. ip := net.ParseIP(host) if ip == nil { return nil, fmt.Errorf("'%s' is not a valid IP address", host) } // To4 returns nil when the IP is not an IPv4 address, so use // this determine the address type. if ip.To4() == nil { netAddrs = append(netAddrs, simpleAddr{net: "tcp6", addr: addr}) } else { netAddrs = append(netAddrs, simpleAddr{net: "tcp4", addr: addr}) } } return netAddrs, nil }
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// parseListeners determines whether each listen address is IPv4 and IPv6 and // returns a slice of appropriate net.Addrs to listen on with TCP. It also // properly detects addresses which apply to "all interfaces" and adds the // address as both IPv4 and IPv6.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2409-L2447
train
btcsuite/btcd
server.go
setupRPCListeners
func setupRPCListeners() ([]net.Listener, error) { // Setup TLS if not disabled. listenFunc := net.Listen if !cfg.DisableTLS { // Generate the TLS cert and key file if both don't already // exist. if !fileExists(cfg.RPCKey) && !fileExists(cfg.RPCCert) { err := genCertPair(cfg.RPCCert, cfg.RPCKey) if err != nil { return nil, err } } keypair, err := tls.LoadX509KeyPair(cfg.RPCCert, cfg.RPCKey) if err != nil { return nil, err } tlsConfig := tls.Config{ Certificates: []tls.Certificate{keypair}, MinVersion: tls.VersionTLS12, } // Change the standard net.Listen function to the tls one. listenFunc = func(net string, laddr string) (net.Listener, error) { return tls.Listen(net, laddr, &tlsConfig) } } netAddrs, err := parseListeners(cfg.RPCListeners) if err != nil { return nil, err } listeners := make([]net.Listener, 0, len(netAddrs)) for _, addr := range netAddrs { listener, err := listenFunc(addr.Network(), addr.String()) if err != nil { rpcsLog.Warnf("Can't listen on %s: %v", addr, err) continue } listeners = append(listeners, listener) } return listeners, nil }
go
func setupRPCListeners() ([]net.Listener, error) { // Setup TLS if not disabled. listenFunc := net.Listen if !cfg.DisableTLS { // Generate the TLS cert and key file if both don't already // exist. if !fileExists(cfg.RPCKey) && !fileExists(cfg.RPCCert) { err := genCertPair(cfg.RPCCert, cfg.RPCKey) if err != nil { return nil, err } } keypair, err := tls.LoadX509KeyPair(cfg.RPCCert, cfg.RPCKey) if err != nil { return nil, err } tlsConfig := tls.Config{ Certificates: []tls.Certificate{keypair}, MinVersion: tls.VersionTLS12, } // Change the standard net.Listen function to the tls one. listenFunc = func(net string, laddr string) (net.Listener, error) { return tls.Listen(net, laddr, &tlsConfig) } } netAddrs, err := parseListeners(cfg.RPCListeners) if err != nil { return nil, err } listeners := make([]net.Listener, 0, len(netAddrs)) for _, addr := range netAddrs { listener, err := listenFunc(addr.Network(), addr.String()) if err != nil { rpcsLog.Warnf("Can't listen on %s: %v", addr, err) continue } listeners = append(listeners, listener) } return listeners, nil }
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// setupRPCListeners returns a slice of listeners that are configured for use // with the RPC server depending on the configuration settings for listen // addresses and TLS.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2506-L2550
train
btcsuite/btcd
server.go
initListeners
func initListeners(amgr *addrmgr.AddrManager, listenAddrs []string, services wire.ServiceFlag) ([]net.Listener, NAT, error) { // Listen for TCP connections at the configured addresses netAddrs, err := parseListeners(listenAddrs) if err != nil { return nil, nil, err } listeners := make([]net.Listener, 0, len(netAddrs)) for _, addr := range netAddrs { listener, err := net.Listen(addr.Network(), addr.String()) if err != nil { srvrLog.Warnf("Can't listen on %s: %v", addr, err) continue } listeners = append(listeners, listener) } var nat NAT if len(cfg.ExternalIPs) != 0 { defaultPort, err := strconv.ParseUint(activeNetParams.DefaultPort, 10, 16) if err != nil { srvrLog.Errorf("Can not parse default port %s for active chain: %v", activeNetParams.DefaultPort, err) return nil, nil, err } for _, sip := range cfg.ExternalIPs { eport := uint16(defaultPort) host, portstr, err := net.SplitHostPort(sip) if err != nil { // no port, use default. host = sip } else { port, err := strconv.ParseUint(portstr, 10, 16) if err != nil { srvrLog.Warnf("Can not parse port from %s for "+ "externalip: %v", sip, err) continue } eport = uint16(port) } na, err := amgr.HostToNetAddress(host, eport, services) if err != nil { srvrLog.Warnf("Not adding %s as externalip: %v", sip, err) continue } err = amgr.AddLocalAddress(na, addrmgr.ManualPrio) if err != nil { amgrLog.Warnf("Skipping specified external IP: %v", err) } } } else { if cfg.Upnp { var err error nat, err = Discover() if err != nil { srvrLog.Warnf("Can't discover upnp: %v", err) } // nil nat here is fine, just means no upnp on network. } // Add bound addresses to address manager to be advertised to peers. for _, listener := range listeners { addr := listener.Addr().String() err := addLocalAddress(amgr, addr, services) if err != nil { amgrLog.Warnf("Skipping bound address %s: %v", addr, err) } } } return listeners, nat, nil }
go
func initListeners(amgr *addrmgr.AddrManager, listenAddrs []string, services wire.ServiceFlag) ([]net.Listener, NAT, error) { // Listen for TCP connections at the configured addresses netAddrs, err := parseListeners(listenAddrs) if err != nil { return nil, nil, err } listeners := make([]net.Listener, 0, len(netAddrs)) for _, addr := range netAddrs { listener, err := net.Listen(addr.Network(), addr.String()) if err != nil { srvrLog.Warnf("Can't listen on %s: %v", addr, err) continue } listeners = append(listeners, listener) } var nat NAT if len(cfg.ExternalIPs) != 0 { defaultPort, err := strconv.ParseUint(activeNetParams.DefaultPort, 10, 16) if err != nil { srvrLog.Errorf("Can not parse default port %s for active chain: %v", activeNetParams.DefaultPort, err) return nil, nil, err } for _, sip := range cfg.ExternalIPs { eport := uint16(defaultPort) host, portstr, err := net.SplitHostPort(sip) if err != nil { // no port, use default. host = sip } else { port, err := strconv.ParseUint(portstr, 10, 16) if err != nil { srvrLog.Warnf("Can not parse port from %s for "+ "externalip: %v", sip, err) continue } eport = uint16(port) } na, err := amgr.HostToNetAddress(host, eport, services) if err != nil { srvrLog.Warnf("Not adding %s as externalip: %v", sip, err) continue } err = amgr.AddLocalAddress(na, addrmgr.ManualPrio) if err != nil { amgrLog.Warnf("Skipping specified external IP: %v", err) } } } else { if cfg.Upnp { var err error nat, err = Discover() if err != nil { srvrLog.Warnf("Can't discover upnp: %v", err) } // nil nat here is fine, just means no upnp on network. } // Add bound addresses to address manager to be advertised to peers. for _, listener := range listeners { addr := listener.Addr().String() err := addLocalAddress(amgr, addr, services) if err != nil { amgrLog.Warnf("Skipping bound address %s: %v", addr, err) } } } return listeners, nat, nil }
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// initListeners initializes the configured net listeners and adds any bound // addresses to the address manager. Returns the listeners and a NAT interface, // which is non-nil if UPnP is in use.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L2893-L2966
train
btcsuite/btcd
server.go
addLocalAddress
func addLocalAddress(addrMgr *addrmgr.AddrManager, addr string, services wire.ServiceFlag) error { host, portStr, err := net.SplitHostPort(addr) if err != nil { return err } port, err := strconv.ParseUint(portStr, 10, 16) if err != nil { return err } if ip := net.ParseIP(host); ip != nil && ip.IsUnspecified() { // If bound to unspecified address, advertise all local interfaces addrs, err := net.InterfaceAddrs() if err != nil { return err } for _, addr := range addrs { ifaceIP, _, err := net.ParseCIDR(addr.String()) if err != nil { continue } // If bound to 0.0.0.0, do not add IPv6 interfaces and if bound to // ::, do not add IPv4 interfaces. if (ip.To4() == nil) != (ifaceIP.To4() == nil) { continue } netAddr := wire.NewNetAddressIPPort(ifaceIP, uint16(port), services) addrMgr.AddLocalAddress(netAddr, addrmgr.BoundPrio) } } else { netAddr, err := addrMgr.HostToNetAddress(host, uint16(port), services) if err != nil { return err } addrMgr.AddLocalAddress(netAddr, addrmgr.BoundPrio) } return nil }
go
func addLocalAddress(addrMgr *addrmgr.AddrManager, addr string, services wire.ServiceFlag) error { host, portStr, err := net.SplitHostPort(addr) if err != nil { return err } port, err := strconv.ParseUint(portStr, 10, 16) if err != nil { return err } if ip := net.ParseIP(host); ip != nil && ip.IsUnspecified() { // If bound to unspecified address, advertise all local interfaces addrs, err := net.InterfaceAddrs() if err != nil { return err } for _, addr := range addrs { ifaceIP, _, err := net.ParseCIDR(addr.String()) if err != nil { continue } // If bound to 0.0.0.0, do not add IPv6 interfaces and if bound to // ::, do not add IPv4 interfaces. if (ip.To4() == nil) != (ifaceIP.To4() == nil) { continue } netAddr := wire.NewNetAddressIPPort(ifaceIP, uint16(port), services) addrMgr.AddLocalAddress(netAddr, addrmgr.BoundPrio) } } else { netAddr, err := addrMgr.HostToNetAddress(host, uint16(port), services) if err != nil { return err } addrMgr.AddLocalAddress(netAddr, addrmgr.BoundPrio) } return nil }
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// addLocalAddress adds an address that this node is listening on to the // address manager so that it may be relayed to peers.
[ "addLocalAddress", "adds", "an", "address", "that", "this", "node", "is", "listening", "on", "to", "the", "address", "manager", "so", "that", "it", "may", "be", "relayed", "to", "peers", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3018-L3060
train
btcsuite/btcd
server.go
dynamicTickDuration
func dynamicTickDuration(remaining time.Duration) time.Duration { switch { case remaining <= time.Second*5: return time.Second case remaining <= time.Second*15: return time.Second * 5 case remaining <= time.Minute: return time.Second * 15 case remaining <= time.Minute*5: return time.Minute case remaining <= time.Minute*15: return time.Minute * 5 case remaining <= time.Hour: return time.Minute * 15 } return time.Hour }
go
func dynamicTickDuration(remaining time.Duration) time.Duration { switch { case remaining <= time.Second*5: return time.Second case remaining <= time.Second*15: return time.Second * 5 case remaining <= time.Minute: return time.Second * 15 case remaining <= time.Minute*5: return time.Minute case remaining <= time.Minute*15: return time.Minute * 5 case remaining <= time.Hour: return time.Minute * 15 } return time.Hour }
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// dynamicTickDuration is a convenience function used to dynamically choose a // tick duration based on remaining time. It is primarily used during // server shutdown to make shutdown warnings more frequent as the shutdown time // approaches.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3066-L3082
train
btcsuite/btcd
server.go
isWhitelisted
func isWhitelisted(addr net.Addr) bool { if len(cfg.whitelists) == 0 { return false } host, _, err := net.SplitHostPort(addr.String()) if err != nil { srvrLog.Warnf("Unable to SplitHostPort on '%s': %v", addr, err) return false } ip := net.ParseIP(host) if ip == nil { srvrLog.Warnf("Unable to parse IP '%s'", addr) return false } for _, ipnet := range cfg.whitelists { if ipnet.Contains(ip) { return true } } return false }
go
func isWhitelisted(addr net.Addr) bool { if len(cfg.whitelists) == 0 { return false } host, _, err := net.SplitHostPort(addr.String()) if err != nil { srvrLog.Warnf("Unable to SplitHostPort on '%s': %v", addr, err) return false } ip := net.ParseIP(host) if ip == nil { srvrLog.Warnf("Unable to parse IP '%s'", addr) return false } for _, ipnet := range cfg.whitelists { if ipnet.Contains(ip) { return true } } return false }
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// isWhitelisted returns whether the IP address is included in the whitelisted // networks and IPs.
[ "isWhitelisted", "returns", "whether", "the", "IP", "address", "is", "included", "in", "the", "whitelisted", "networks", "and", "IPs", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3086-L3108
train
btcsuite/btcd
server.go
Swap
func (s checkpointSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
go
func (s checkpointSorter) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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// Swap swaps the checkpoints at the passed indices. It is part of the // sort.Interface implementation.
[ "Swap", "swaps", "the", "checkpoints", "at", "the", "passed", "indices", ".", "It", "is", "part", "of", "the", "sort", ".", "Interface", "implementation", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3122-L3124
train
btcsuite/btcd
server.go
Less
func (s checkpointSorter) Less(i, j int) bool { return s[i].Height < s[j].Height }
go
func (s checkpointSorter) Less(i, j int) bool { return s[i].Height < s[j].Height }
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// Less returns whether the checkpoint with index i should sort before the // checkpoint with index j. It is part of the sort.Interface implementation.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3128-L3130
train
btcsuite/btcd
server.go
mergeCheckpoints
func mergeCheckpoints(defaultCheckpoints, additional []chaincfg.Checkpoint) []chaincfg.Checkpoint { // Create a map of the additional checkpoints to remove duplicates while // leaving the most recently-specified checkpoint. extra := make(map[int32]chaincfg.Checkpoint) for _, checkpoint := range additional { extra[checkpoint.Height] = checkpoint } // Add all default checkpoints that do not have an override in the // additional checkpoints. numDefault := len(defaultCheckpoints) checkpoints := make([]chaincfg.Checkpoint, 0, numDefault+len(extra)) for _, checkpoint := range defaultCheckpoints { if _, exists := extra[checkpoint.Height]; !exists { checkpoints = append(checkpoints, checkpoint) } } // Append the additional checkpoints and return the sorted results. for _, checkpoint := range extra { checkpoints = append(checkpoints, checkpoint) } sort.Sort(checkpointSorter(checkpoints)) return checkpoints }
go
func mergeCheckpoints(defaultCheckpoints, additional []chaincfg.Checkpoint) []chaincfg.Checkpoint { // Create a map of the additional checkpoints to remove duplicates while // leaving the most recently-specified checkpoint. extra := make(map[int32]chaincfg.Checkpoint) for _, checkpoint := range additional { extra[checkpoint.Height] = checkpoint } // Add all default checkpoints that do not have an override in the // additional checkpoints. numDefault := len(defaultCheckpoints) checkpoints := make([]chaincfg.Checkpoint, 0, numDefault+len(extra)) for _, checkpoint := range defaultCheckpoints { if _, exists := extra[checkpoint.Height]; !exists { checkpoints = append(checkpoints, checkpoint) } } // Append the additional checkpoints and return the sorted results. for _, checkpoint := range extra { checkpoints = append(checkpoints, checkpoint) } sort.Sort(checkpointSorter(checkpoints)) return checkpoints }
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// mergeCheckpoints returns two slices of checkpoints merged into one slice // such that the checkpoints are sorted by height. In the case the additional // checkpoints contain a checkpoint with the same height as a checkpoint in the // default checkpoints, the additional checkpoint will take precedence and // overwrite the default one.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/server.go#L3137-L3161
train
btcsuite/btcd
txscript/sign.go
RawTxInWitnessSignature
func RawTxInWitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int, amt int64, subScript []byte, hashType SigHashType, key *btcec.PrivateKey) ([]byte, error) { parsedScript, err := parseScript(subScript) if err != nil { return nil, fmt.Errorf("cannot parse output script: %v", err) } hash, err := calcWitnessSignatureHash(parsedScript, sigHashes, hashType, tx, idx, amt) if err != nil { return nil, err } signature, err := key.Sign(hash) if err != nil { return nil, fmt.Errorf("cannot sign tx input: %s", err) } return append(signature.Serialize(), byte(hashType)), nil }
go
func RawTxInWitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int, amt int64, subScript []byte, hashType SigHashType, key *btcec.PrivateKey) ([]byte, error) { parsedScript, err := parseScript(subScript) if err != nil { return nil, fmt.Errorf("cannot parse output script: %v", err) } hash, err := calcWitnessSignatureHash(parsedScript, sigHashes, hashType, tx, idx, amt) if err != nil { return nil, err } signature, err := key.Sign(hash) if err != nil { return nil, fmt.Errorf("cannot sign tx input: %s", err) } return append(signature.Serialize(), byte(hashType)), nil }
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// RawTxInWitnessSignature returns the serialized ECDA signature for the input // idx of the given transaction, with the hashType appended to it. This // function is identical to RawTxInSignature, however the signature generated // signs a new sighash digest defined in BIP0143.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L21-L42
train
btcsuite/btcd
txscript/sign.go
WitnessSignature
func WitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int, amt int64, subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey, compress bool) (wire.TxWitness, error) { sig, err := RawTxInWitnessSignature(tx, sigHashes, idx, amt, subscript, hashType, privKey) if err != nil { return nil, err } pk := (*btcec.PublicKey)(&privKey.PublicKey) var pkData []byte if compress { pkData = pk.SerializeCompressed() } else { pkData = pk.SerializeUncompressed() } // A witness script is actually a stack, so we return an array of byte // slices here, rather than a single byte slice. return wire.TxWitness{sig, pkData}, nil }
go
func WitnessSignature(tx *wire.MsgTx, sigHashes *TxSigHashes, idx int, amt int64, subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey, compress bool) (wire.TxWitness, error) { sig, err := RawTxInWitnessSignature(tx, sigHashes, idx, amt, subscript, hashType, privKey) if err != nil { return nil, err } pk := (*btcec.PublicKey)(&privKey.PublicKey) var pkData []byte if compress { pkData = pk.SerializeCompressed() } else { pkData = pk.SerializeUncompressed() } // A witness script is actually a stack, so we return an array of byte // slices here, rather than a single byte slice. return wire.TxWitness{sig, pkData}, nil }
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// WitnessSignature creates an input witness stack for tx to spend BTC sent // from a previous output to the owner of privKey using the p2wkh script // template. The passed transaction must contain all the inputs and outputs as // dictated by the passed hashType. The signature generated observes the new // transaction digest algorithm defined within BIP0143.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L49-L70
train
btcsuite/btcd
txscript/sign.go
RawTxInSignature
func RawTxInSignature(tx *wire.MsgTx, idx int, subScript []byte, hashType SigHashType, key *btcec.PrivateKey) ([]byte, error) { hash, err := CalcSignatureHash(subScript, hashType, tx, idx) if err != nil { return nil, err } signature, err := key.Sign(hash) if err != nil { return nil, fmt.Errorf("cannot sign tx input: %s", err) } return append(signature.Serialize(), byte(hashType)), nil }
go
func RawTxInSignature(tx *wire.MsgTx, idx int, subScript []byte, hashType SigHashType, key *btcec.PrivateKey) ([]byte, error) { hash, err := CalcSignatureHash(subScript, hashType, tx, idx) if err != nil { return nil, err } signature, err := key.Sign(hash) if err != nil { return nil, fmt.Errorf("cannot sign tx input: %s", err) } return append(signature.Serialize(), byte(hashType)), nil }
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// RawTxInSignature returns the serialized ECDSA signature for the input idx of // the given transaction, with hashType appended to it.
[ "RawTxInSignature", "returns", "the", "serialized", "ECDSA", "signature", "for", "the", "input", "idx", "of", "the", "given", "transaction", "with", "hashType", "appended", "to", "it", "." ]
96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L74-L87
train
btcsuite/btcd
txscript/sign.go
SignatureScript
func SignatureScript(tx *wire.MsgTx, idx int, subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey, compress bool) ([]byte, error) { sig, err := RawTxInSignature(tx, idx, subscript, hashType, privKey) if err != nil { return nil, err } pk := (*btcec.PublicKey)(&privKey.PublicKey) var pkData []byte if compress { pkData = pk.SerializeCompressed() } else { pkData = pk.SerializeUncompressed() } return NewScriptBuilder().AddData(sig).AddData(pkData).Script() }
go
func SignatureScript(tx *wire.MsgTx, idx int, subscript []byte, hashType SigHashType, privKey *btcec.PrivateKey, compress bool) ([]byte, error) { sig, err := RawTxInSignature(tx, idx, subscript, hashType, privKey) if err != nil { return nil, err } pk := (*btcec.PublicKey)(&privKey.PublicKey) var pkData []byte if compress { pkData = pk.SerializeCompressed() } else { pkData = pk.SerializeUncompressed() } return NewScriptBuilder().AddData(sig).AddData(pkData).Script() }
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// SignatureScript creates an input signature script for tx to spend BTC sent // from a previous output to the owner of privKey. tx must include all // transaction inputs and outputs, however txin scripts are allowed to be filled // or empty. The returned script is calculated to be used as the idx'th txin // sigscript for tx. subscript is the PkScript of the previous output being used // as the idx'th input. privKey is serialized in either a compressed or // uncompressed format based on compress. This format must match the same format // used to generate the payment address, or the script validation will fail.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L97-L112
train
btcsuite/btcd
txscript/sign.go
mergeScripts
func mergeScripts(chainParams *chaincfg.Params, tx *wire.MsgTx, idx int, pkScript []byte, class ScriptClass, addresses []btcutil.Address, nRequired int, sigScript, prevScript []byte) []byte { // TODO: the scripthash and multisig paths here are overly // inefficient in that they will recompute already known data. // some internal refactoring could probably make this avoid needless // extra calculations. switch class { case ScriptHashTy: // Remove the last push in the script and then recurse. // this could be a lot less inefficient. sigPops, err := parseScript(sigScript) if err != nil || len(sigPops) == 0 { return prevScript } prevPops, err := parseScript(prevScript) if err != nil || len(prevPops) == 0 { return sigScript } // assume that script in sigPops is the correct one, we just // made it. script := sigPops[len(sigPops)-1].data // We already know this information somewhere up the stack. class, addresses, nrequired, _ := ExtractPkScriptAddrs(script, chainParams) // regenerate scripts. sigScript, _ := unparseScript(sigPops) prevScript, _ := unparseScript(prevPops) // Merge mergedScript := mergeScripts(chainParams, tx, idx, script, class, addresses, nrequired, sigScript, prevScript) // Reappend the script and return the result. builder := NewScriptBuilder() builder.AddOps(mergedScript) builder.AddData(script) finalScript, _ := builder.Script() return finalScript case MultiSigTy: return mergeMultiSig(tx, idx, addresses, nRequired, pkScript, sigScript, prevScript) // It doesn't actually make sense to merge anything other than multiig // and scripthash (because it could contain multisig). Everything else // has either zero signature, can't be spent, or has a single signature // which is either present or not. The other two cases are handled // above. In the conflict case here we just assume the longest is // correct (this matches behaviour of the reference implementation). default: if len(sigScript) > len(prevScript) { return sigScript } return prevScript } }
go
func mergeScripts(chainParams *chaincfg.Params, tx *wire.MsgTx, idx int, pkScript []byte, class ScriptClass, addresses []btcutil.Address, nRequired int, sigScript, prevScript []byte) []byte { // TODO: the scripthash and multisig paths here are overly // inefficient in that they will recompute already known data. // some internal refactoring could probably make this avoid needless // extra calculations. switch class { case ScriptHashTy: // Remove the last push in the script and then recurse. // this could be a lot less inefficient. sigPops, err := parseScript(sigScript) if err != nil || len(sigPops) == 0 { return prevScript } prevPops, err := parseScript(prevScript) if err != nil || len(prevPops) == 0 { return sigScript } // assume that script in sigPops is the correct one, we just // made it. script := sigPops[len(sigPops)-1].data // We already know this information somewhere up the stack. class, addresses, nrequired, _ := ExtractPkScriptAddrs(script, chainParams) // regenerate scripts. sigScript, _ := unparseScript(sigPops) prevScript, _ := unparseScript(prevPops) // Merge mergedScript := mergeScripts(chainParams, tx, idx, script, class, addresses, nrequired, sigScript, prevScript) // Reappend the script and return the result. builder := NewScriptBuilder() builder.AddOps(mergedScript) builder.AddData(script) finalScript, _ := builder.Script() return finalScript case MultiSigTy: return mergeMultiSig(tx, idx, addresses, nRequired, pkScript, sigScript, prevScript) // It doesn't actually make sense to merge anything other than multiig // and scripthash (because it could contain multisig). Everything else // has either zero signature, can't be spent, or has a single signature // which is either present or not. The other two cases are handled // above. In the conflict case here we just assume the longest is // correct (this matches behaviour of the reference implementation). default: if len(sigScript) > len(prevScript) { return sigScript } return prevScript } }
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// mergeScripts merges sigScript and prevScript assuming they are both // partial solutions for pkScript spending output idx of tx. class, addresses // and nrequired are the result of extracting the addresses from pkscript. // The return value is the best effort merging of the two scripts. Calling this // function with addresses, class and nrequired that do not match pkScript is // an error and results in undefined behaviour.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L221-L280
train
btcsuite/btcd
txscript/sign.go
mergeMultiSig
func mergeMultiSig(tx *wire.MsgTx, idx int, addresses []btcutil.Address, nRequired int, pkScript, sigScript, prevScript []byte) []byte { // This is an internal only function and we already parsed this script // as ok for multisig (this is how we got here), so if this fails then // all assumptions are broken and who knows which way is up? pkPops, _ := parseScript(pkScript) sigPops, err := parseScript(sigScript) if err != nil || len(sigPops) == 0 { return prevScript } prevPops, err := parseScript(prevScript) if err != nil || len(prevPops) == 0 { return sigScript } // Convenience function to avoid duplication. extractSigs := func(pops []parsedOpcode, sigs [][]byte) [][]byte { for _, pop := range pops { if len(pop.data) != 0 { sigs = append(sigs, pop.data) } } return sigs } possibleSigs := make([][]byte, 0, len(sigPops)+len(prevPops)) possibleSigs = extractSigs(sigPops, possibleSigs) possibleSigs = extractSigs(prevPops, possibleSigs) // Now we need to match the signatures to pubkeys, the only real way to // do that is to try to verify them all and match it to the pubkey // that verifies it. we then can go through the addresses in order // to build our script. Anything that doesn't parse or doesn't verify we // throw away. addrToSig := make(map[string][]byte) sigLoop: for _, sig := range possibleSigs { // can't have a valid signature that doesn't at least have a // hashtype, in practise it is even longer than this. but // that'll be checked next. if len(sig) < 1 { continue } tSig := sig[:len(sig)-1] hashType := SigHashType(sig[len(sig)-1]) pSig, err := btcec.ParseDERSignature(tSig, btcec.S256()) if err != nil { continue } // We have to do this each round since hash types may vary // between signatures and so the hash will vary. We can, // however, assume no sigs etc are in the script since that // would make the transaction nonstandard and thus not // MultiSigTy, so we just need to hash the full thing. hash := calcSignatureHash(pkPops, hashType, tx, idx) for _, addr := range addresses { // All multisig addresses should be pubkey addresses // it is an error to call this internal function with // bad input. pkaddr := addr.(*btcutil.AddressPubKey) pubKey := pkaddr.PubKey() // If it matches we put it in the map. We only // can take one signature per public key so if we // already have one, we can throw this away. if pSig.Verify(hash, pubKey) { aStr := addr.EncodeAddress() if _, ok := addrToSig[aStr]; !ok { addrToSig[aStr] = sig } continue sigLoop } } } // Extra opcode to handle the extra arg consumed (due to previous bugs // in the reference implementation). builder := NewScriptBuilder().AddOp(OP_FALSE) doneSigs := 0 // This assumes that addresses are in the same order as in the script. for _, addr := range addresses { sig, ok := addrToSig[addr.EncodeAddress()] if !ok { continue } builder.AddData(sig) doneSigs++ if doneSigs == nRequired { break } } // padding for missing ones. for i := doneSigs; i < nRequired; i++ { builder.AddOp(OP_0) } script, _ := builder.Script() return script }
go
func mergeMultiSig(tx *wire.MsgTx, idx int, addresses []btcutil.Address, nRequired int, pkScript, sigScript, prevScript []byte) []byte { // This is an internal only function and we already parsed this script // as ok for multisig (this is how we got here), so if this fails then // all assumptions are broken and who knows which way is up? pkPops, _ := parseScript(pkScript) sigPops, err := parseScript(sigScript) if err != nil || len(sigPops) == 0 { return prevScript } prevPops, err := parseScript(prevScript) if err != nil || len(prevPops) == 0 { return sigScript } // Convenience function to avoid duplication. extractSigs := func(pops []parsedOpcode, sigs [][]byte) [][]byte { for _, pop := range pops { if len(pop.data) != 0 { sigs = append(sigs, pop.data) } } return sigs } possibleSigs := make([][]byte, 0, len(sigPops)+len(prevPops)) possibleSigs = extractSigs(sigPops, possibleSigs) possibleSigs = extractSigs(prevPops, possibleSigs) // Now we need to match the signatures to pubkeys, the only real way to // do that is to try to verify them all and match it to the pubkey // that verifies it. we then can go through the addresses in order // to build our script. Anything that doesn't parse or doesn't verify we // throw away. addrToSig := make(map[string][]byte) sigLoop: for _, sig := range possibleSigs { // can't have a valid signature that doesn't at least have a // hashtype, in practise it is even longer than this. but // that'll be checked next. if len(sig) < 1 { continue } tSig := sig[:len(sig)-1] hashType := SigHashType(sig[len(sig)-1]) pSig, err := btcec.ParseDERSignature(tSig, btcec.S256()) if err != nil { continue } // We have to do this each round since hash types may vary // between signatures and so the hash will vary. We can, // however, assume no sigs etc are in the script since that // would make the transaction nonstandard and thus not // MultiSigTy, so we just need to hash the full thing. hash := calcSignatureHash(pkPops, hashType, tx, idx) for _, addr := range addresses { // All multisig addresses should be pubkey addresses // it is an error to call this internal function with // bad input. pkaddr := addr.(*btcutil.AddressPubKey) pubKey := pkaddr.PubKey() // If it matches we put it in the map. We only // can take one signature per public key so if we // already have one, we can throw this away. if pSig.Verify(hash, pubKey) { aStr := addr.EncodeAddress() if _, ok := addrToSig[aStr]; !ok { addrToSig[aStr] = sig } continue sigLoop } } } // Extra opcode to handle the extra arg consumed (due to previous bugs // in the reference implementation). builder := NewScriptBuilder().AddOp(OP_FALSE) doneSigs := 0 // This assumes that addresses are in the same order as in the script. for _, addr := range addresses { sig, ok := addrToSig[addr.EncodeAddress()] if !ok { continue } builder.AddData(sig) doneSigs++ if doneSigs == nRequired { break } } // padding for missing ones. for i := doneSigs; i < nRequired; i++ { builder.AddOp(OP_0) } script, _ := builder.Script() return script }
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// mergeMultiSig combines the two signature scripts sigScript and prevScript // that both provide signatures for pkScript in output idx of tx. addresses // and nRequired should be the results from extracting the addresses from // pkScript. Since this function is internal only we assume that the arguments // have come from other functions internally and thus are all consistent with // each other, behaviour is undefined if this contract is broken.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L288-L395
train
btcsuite/btcd
txscript/sign.go
GetKey
func (kc KeyClosure) GetKey(address btcutil.Address) (*btcec.PrivateKey, bool, error) { return kc(address) }
go
func (kc KeyClosure) GetKey(address btcutil.Address) (*btcec.PrivateKey, bool, error) { return kc(address) }
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L407-L410
train
btcsuite/btcd
txscript/sign.go
GetScript
func (sc ScriptClosure) GetScript(address btcutil.Address) ([]byte, error) { return sc(address) }
go
func (sc ScriptClosure) GetScript(address btcutil.Address) ([]byte, error) { return sc(address) }
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// GetScript implements ScriptDB by returning the result of calling the closure.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/txscript/sign.go#L422-L424
train
btcsuite/btcd
database/log.go
UseLogger
func UseLogger(logger btclog.Logger) { log = logger // Update the logger for the registered drivers. for _, drv := range drivers { if drv.UseLogger != nil { drv.UseLogger(logger) } } }
go
func UseLogger(logger btclog.Logger) { log = logger // Update the logger for the registered drivers. for _, drv := range drivers { if drv.UseLogger != nil { drv.UseLogger(logger) } } }
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// UseLogger uses a specified Logger to output package logging info.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/database/log.go#L28-L37
train
btcsuite/btcd
mempool/error.go
txRuleError
func txRuleError(c wire.RejectCode, desc string) RuleError { return RuleError{ Err: TxRuleError{RejectCode: c, Description: desc}, } }
go
func txRuleError(c wire.RejectCode, desc string) RuleError { return RuleError{ Err: TxRuleError{RejectCode: c, Description: desc}, } }
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// txRuleError creates an underlying TxRuleError with the given a set of // arguments and returns a RuleError that encapsulates it.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/mempool/error.go#L47-L51
train
btcsuite/btcd
mempool/error.go
extractRejectCode
func extractRejectCode(err error) (wire.RejectCode, bool) { // Pull the underlying error out of a RuleError. if rerr, ok := err.(RuleError); ok { err = rerr.Err } switch err := err.(type) { case blockchain.RuleError: // Convert the chain error to a reject code. var code wire.RejectCode switch err.ErrorCode { // Rejected due to duplicate. case blockchain.ErrDuplicateBlock: code = wire.RejectDuplicate // Rejected due to obsolete version. case blockchain.ErrBlockVersionTooOld: code = wire.RejectObsolete // Rejected due to checkpoint. case blockchain.ErrCheckpointTimeTooOld: fallthrough case blockchain.ErrDifficultyTooLow: fallthrough case blockchain.ErrBadCheckpoint: fallthrough case blockchain.ErrForkTooOld: code = wire.RejectCheckpoint // Everything else is due to the block or transaction being invalid. default: code = wire.RejectInvalid } return code, true case TxRuleError: return err.RejectCode, true case nil: return wire.RejectInvalid, false } return wire.RejectInvalid, false }
go
func extractRejectCode(err error) (wire.RejectCode, bool) { // Pull the underlying error out of a RuleError. if rerr, ok := err.(RuleError); ok { err = rerr.Err } switch err := err.(type) { case blockchain.RuleError: // Convert the chain error to a reject code. var code wire.RejectCode switch err.ErrorCode { // Rejected due to duplicate. case blockchain.ErrDuplicateBlock: code = wire.RejectDuplicate // Rejected due to obsolete version. case blockchain.ErrBlockVersionTooOld: code = wire.RejectObsolete // Rejected due to checkpoint. case blockchain.ErrCheckpointTimeTooOld: fallthrough case blockchain.ErrDifficultyTooLow: fallthrough case blockchain.ErrBadCheckpoint: fallthrough case blockchain.ErrForkTooOld: code = wire.RejectCheckpoint // Everything else is due to the block or transaction being invalid. default: code = wire.RejectInvalid } return code, true case TxRuleError: return err.RejectCode, true case nil: return wire.RejectInvalid, false } return wire.RejectInvalid, false }
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// extractRejectCode attempts to return a relevant reject code for a given error // by examining the error for known types. It will return true if a code // was successfully extracted.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/mempool/error.go#L64-L108
train
btcsuite/btcd
mempool/error.go
ErrToRejectErr
func ErrToRejectErr(err error) (wire.RejectCode, string) { // Return the reject code along with the error text if it can be // extracted from the error. rejectCode, found := extractRejectCode(err) if found { return rejectCode, err.Error() } // Return a generic rejected string if there is no error. This really // should not happen unless the code elsewhere is not setting an error // as it should be, but it's best to be safe and simply return a generic // string rather than allowing the following code that dereferences the // err to panic. if err == nil { return wire.RejectInvalid, "rejected" } // When the underlying error is not one of the above cases, just return // wire.RejectInvalid with a generic rejected string plus the error // text. return wire.RejectInvalid, "rejected: " + err.Error() }
go
func ErrToRejectErr(err error) (wire.RejectCode, string) { // Return the reject code along with the error text if it can be // extracted from the error. rejectCode, found := extractRejectCode(err) if found { return rejectCode, err.Error() } // Return a generic rejected string if there is no error. This really // should not happen unless the code elsewhere is not setting an error // as it should be, but it's best to be safe and simply return a generic // string rather than allowing the following code that dereferences the // err to panic. if err == nil { return wire.RejectInvalid, "rejected" } // When the underlying error is not one of the above cases, just return // wire.RejectInvalid with a generic rejected string plus the error // text. return wire.RejectInvalid, "rejected: " + err.Error() }
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// ErrToRejectErr examines the underlying type of the error and returns a reject // code and string appropriate to be sent in a wire.MsgReject message.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/mempool/error.go#L112-L133
train
btcsuite/btcd
btcec/signature.go
Verify
func (sig *Signature) Verify(hash []byte, pubKey *PublicKey) bool { return ecdsa.Verify(pubKey.ToECDSA(), hash, sig.R, sig.S) }
go
func (sig *Signature) Verify(hash []byte, pubKey *PublicKey) bool { return ecdsa.Verify(pubKey.ToECDSA(), hash, sig.R, sig.S) }
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// Verify calls ecdsa.Verify to verify the signature of hash using the public // key. It returns true if the signature is valid, false otherwise.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/btcec/signature.go#L76-L78
train
btcsuite/btcd
btcec/signature.go
IsEqual
func (sig *Signature) IsEqual(otherSig *Signature) bool { return sig.R.Cmp(otherSig.R) == 0 && sig.S.Cmp(otherSig.S) == 0 }
go
func (sig *Signature) IsEqual(otherSig *Signature) bool { return sig.R.Cmp(otherSig.R) == 0 && sig.S.Cmp(otherSig.S) == 0 }
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// IsEqual compares this Signature instance to the one passed, returning true // if both Signatures are equivalent. A signature is equivalent to another, if // they both have the same scalar value for R and S.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/btcec/signature.go#L83-L86
train
btcsuite/btcd
btcec/signature.go
ParseSignature
func ParseSignature(sigStr []byte, curve elliptic.Curve) (*Signature, error) { return parseSig(sigStr, curve, false) }
go
func ParseSignature(sigStr []byte, curve elliptic.Curve) (*Signature, error) { return parseSig(sigStr, curve, false) }
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// ParseSignature parses a signature in BER format for the curve type `curve' // into a Signature type, perfoming some basic sanity checks. If parsing // according to the more strict DER format is needed, use ParseDERSignature.
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96897255fd17525dd12426345d279533780bc4e1
https://github.com/btcsuite/btcd/blob/96897255fd17525dd12426345d279533780bc4e1/btcec/signature.go#L211-L213
train