ssl.py 文件源码

def send(self, data, flags=0, timeout=timeout_default):
        if timeout is timeout_default:
            timeout = self.timeout
        if self._sslobj:
            if flags != 0:
                raise ValueError(
                    "non-zero flags not allowed in calls to send() on %s" %
                    self.__class__)
            while True:
                try:
                    v = self._sslobj.write(data)
                except SSLError:
                    x = sys.exc_info()[1]
                    if x.args[0] == SSL_ERROR_WANT_READ:
                        if self.timeout == 0.0:
                            return 0
                        sys.exc_clear()
                        self._wait(self._read_event)
                    elif x.args[0] == SSL_ERROR_WANT_WRITE:
                        if self.timeout == 0.0:
                            return 0
                        sys.exc_clear()
                        self._wait(self._write_event)
                    else:
                        raise
                else:
                    return v
        else:
            return socket.send(self, data, flags, timeout)
    # is it possible for sendall() to send some data without encryption if another end shut down SSL?