ssl.py 文件源码

def do_handshake(self):
        """Perform a TLS/SSL handshake."""
        while True:
            try:
                return self._sslobj.do_handshake()
            except SSLError, ex:
                if ex.args[0] == SSL_ERROR_WANT_READ:
                    if self.timeout == 0.0:
                        raise
                    sys.exc_clear()
                    wait_read(self.fileno(), timeout=self.timeout, timeout_exc=_SSLErrorHandshakeTimeout, event=self._read_event)
                elif ex.args[0] == SSL_ERROR_WANT_WRITE:
                    if self.timeout == 0.0:
                        raise
                    sys.exc_clear()
                    wait_write(self.fileno(), timeout=self.timeout, timeout_exc=_SSLErrorHandshakeTimeout, event=self._write_event)
                else:
                    raise