python - httplib.HTTPSConnection 在并发环境中导致 SSL 错误

Question

我制作了一个小的 Python 脚本，以在公开之前对我一直在开发的网站进行压力测试。它通过每 5 分钟生成一个新线程来运行，该线程在 while(true) 循环中运行以下代码。

conn = httplib.HTTPSConnection("site", 000, "pem", "pem", timeout = 30)
conn.request("GET", "/reports.php?" + url, headers = headers)
response = conn.getresponse()
read = (response.read())

如果我只有 1 个线程，那么代码请求/响应每次都会成功。当我创建新线程时，我会更频繁地收到以下错误。最终，当有大约 10 个线程时，它会在大约 90% 的时间内失败。

Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "stresstest.py", line 32, in threadproc
    stressTest(conn)
  File "stresstest.py", line 76, in stressTest
    response = conn.getresponse()
  File "/usr/lib/python2.7/httplib.py", line 1027, in getresponse
    response.begin()
  File "/usr/lib/python2.7/httplib.py", line 407, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python2.7/httplib.py", line 365, in _read_status
    line = self.fp.readline()
  File "/usr/lib/python2.7/socket.py", line 430, in readline
    data = recv(1)
  File "/usr/lib/python2.7/ssl.py", line 232, in recv
    return self.read(buflen)
  File "/usr/lib/python2.7/ssl.py", line 151, in read
    return self._sslobj.read(len)
SSLError: The read operation timed out

我想知道 httplib 使用的 ssl 代码是否不是线程安全的，或者是否有其他原因导致失败？

Answer 1

它是线程安全的。您可能想开始研究服务器代码的性能...