Create app.py

app.py

@@ -0,0 +1,50 @@
+from flask import Flask, request, Response
+import requests
+
+app = Flask(__name__)
+
+@app.route('/', defaults={'path': ''})
+@app.route('/<path:path>')
+def proxy(path):
+    # 解析请求 URL
+    url = request.url
+    url_obj = requests.compat.urlparse(url)
+
+    # 默认目标主机为 chatgpt.com，若路径以 /assets 开头则切换为 cdn.oaistatic.com
+    target_host = 'chatgpt.com'
+    if url_obj.path.startswith('/assets'):
+        target_host = 'cdn.oaistatic.com'
+
+    new_url = url_obj._replace(netloc=target_host).geturl()
+
+    # 创建新的 Headers 对象，复制原始请求头
+    new_headers = dict(request.headers)
+
+    # 设置 User-Agent 为模拟无头浏览器的标识，这里结合了 Edge 和 HeadlessChrome 的特征
+    new_headers['User-Agent'] = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/92.0.4515.107 Safari/537.36 Edg/92.0.902.55'
+
+    # 添加额外的 HTTP 头信息以模拟无头浏览器的请求行为
+    new_headers['sec-ch-ua'] = '"Chromium";v="92", " Not A;Brand";v="99", "HeadlessChrome";v="92"'
+    new_headers['sec-ch-ua-mobile'] = '?0'
+    new_headers['sec-ch-ua-platform'] = '"Windows"'
+    new_headers['sec-fetch-site'] = 'none'
+    new_headers['sec-fetch-mode'] = 'navigate'
+    new_headers['sec-fetch-user'] = '?1'
+    new_headers['sec-fetch-dest'] = 'document'
+
+    # 构造新的请求，保留原有的 method、body（非 GET/HEAD 请求）
+    if request.method in ['GET', 'HEAD']:
+        resp = requests.request(request.method, new_url, headers=new_headers, allow_redirects=True)
+    else:
+        resp = requests.request(request.method, new_url, headers=new_headers, data=request.get_data(), allow_redirects=True)
+
+    # 创建响应对象
+    response = Response(resp.content, resp.status_code)
+    for key, value in resp.headers.items():
+        if key.lower() not in ['content-encoding', 'content-length', 'transfer-encoding', 'connection']:
+            response.headers[key] = value
+
+    return response
+
+if __name__ == '__main__':
+    app.run(debug=True)