httpclient.py 文件源码

def __connect(self):
        err = self.__socket.connect_ex((self.__host, self.__port))
        if not err:
            self.__connect_ok = True
            if self.__ssl_on:
                self.__tls_ctx = ssl._create_unverified_context()

                ssl_verinfo = ssl.OPENSSL_VERSION_INFO
                # ??openssl 1.0.2?????????ALPN
                if ssl_verinfo[0] >= 1 and ssl_verinfo[1] >= 0 and ssl_verinfo[2] >= 2:
                    self.__alpn_on = True

                if self.__alpn_on:
                    alpn_protocols = ["http/1.1"]
                    self.__tls_ctx.set_alpn_protocols(alpn_protocols)
                self.__socket = self.__tls_ctx.wrap_socket(self.__socket)
            self.__socket.setblocking(0)
        return