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我无法通过 SOCKS5 代理发送 UDP 数据包。我正在使用 PySocks。这是我的代码：

import socks

proxyIP = "whatever.proxy"
proxyPort = 8080
s = socks.socksocket(socket.AF_INET, socket.SOCK_DGRAM)
s.set_proxy(socks.SOCKS5, proxyIP, proxyPort)
a = s.sendto(b"GET / HTTP/1.1", ("example.com",80))

在我的测试中，目的地是我的 nginx Web 服务器。代理不是我的，我只知道是 socks5 代理。这是我得到的错误：

Traceback (most recent call last):
  File "test.py", line 35, in <module>
    a = s.sendto(b"GET / HTTP/1.1", ("example.com",80))
  File "C:\Python38\lib\site-packages\socks.py", line 367, in sendto
    self.bind(("", 0))
  File "C:\Python38\lib\site-packages\socks.py", line 353, in bind
    _, relay = self._SOCKS5_request(self._proxyconn, UDP_ASSOCIATE, dst)
  File "C:\Python38\lib\site-packages\socks.py", line 524, in _SOCKS5_request
    resp = self._readall(reader, 3)
  File "C:\Python38\lib\site-packages\socks.py", line 278, in _readall
    raise GeneralProxyError("Connection closed unexpectedly")
socks.GeneralProxyError: Connection closed unexpectedly

我也测试过s.connect/s.sendall，我有完全相同的错误。

最后，我必须说它与 TCP (SOCK_STREAM) 完美配合。

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