Python socket 模块，SocketType() 实例源码

def get_arwsocks(vals):
    # asocks is all extant sockets
    socknames = ['cmdsock', 'stsock']
    asocks = [ s for s in [ vals.get(n) for n in socknames ] if s is not None ] + \
             [ info[1] for info in vals.setdefault('runinfo', []) ]

    # rsocks is all objects that we could select upon
    rsocks = [ s for s in asocks
                 if isinstance(s, socket.SocketType)
                 or isinstance(s, SSL.Connection)
                 or (isinstance(s, SocketNB) and s.sock is not None) ]

    # wsocks is all rsocks that indicate they want to be written
    wsocks = [ s for s in asocks if isinstance(s, SocketNB) and (s.ssl_write or s.want_write) ]

    return (asocks, rsocks, wsocks)

###
#  make command string
###

def select_recv(conn, buff_size, timeout=None):
    """add timeout for socket.recv()
    :type conn: socket.SocketType
    :type buff_size: int
    :type timeout: float
    :rtype: Union[bytes, None]
    """
    rlist, _, _ = select.select([conn], [], [], timeout)
    if not rlist:
        # timeout
        raise RuntimeError("recv timeout")

    buff = conn.recv(buff_size)
    if not buff:
        raise RuntimeError("received zero bytes, socket was closed")

    return buff

def _rd_shutdown(self, conn, once=False):
        """action when connection should be read-shutdown
        :type conn: socket.SocketType
        """
        if conn in self.conn_rd:
            self.conn_rd.remove(conn)

        try:
            conn.shutdown(socket.SHUT_RD)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            # if a socket is rd_shutdowned, then it's
            #   pair should be wr_shutdown.
            self._wr_shutdown(self.map[conn], True)

        if self.map.get(conn) not in self.conn_rd:
            # if both two connection pair was rd-shutdowned,
            #   this pair sockets are regarded to be completed
            #   so we gonna close them
            self._terminate(conn)

def select_recv(conn, buff_size, timeout=None):
    """add timeout for socket.recv()
    :type conn: socket.SocketType
    :type buff_size: int
    :type timeout: float
    :rtype: Union[bytes, None]
    """
    rlist, _, _ = select.select([conn], [], [], timeout)
    if not rlist:
        # timeout
        raise RuntimeError("recv timeout")

    buff = conn.recv(buff_size)
    if not buff:
        raise RuntimeError("received zero bytes, socket was closed")

    return buff

def add_conn_pair(self, conn1, conn2, callback=None):
        """
        transfer anything between two sockets

        :type conn1: socket.SocketType
        :type conn2: socket.SocketType
        :param callback: callback in connection finish
        :type callback: Callable
        """
        # mark as readable
        self.conn_rd.add(conn1)
        self.conn_rd.add(conn2)

        # record sockets pairs
        self.map[conn1] = conn2
        self.map[conn2] = conn1

        # record callback
        if callback is not None:
            self.callbacks[conn1] = callback

def _rd_shutdown(self, conn, once=False):
        """action when connection should be read-shutdown
        :type conn: socket.SocketType
        """
        if conn in self.conn_rd:
            self.conn_rd.remove(conn)

        try:
            conn.shutdown(socket.SHUT_RD)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            # if a socket is rd_shutdowned, then it's
            #   pair should be wr_shutdown.
            self._wr_shutdown(self.map[conn], True)

        if self.map.get(conn) not in self.conn_rd:
            # if both two connection pair was rd-shutdowned,
            #   this pair sockets are regarded to be completed
            #   so we gonna close them
            self._terminate(conn)

def select_recv(conn, buff_size, timeout=None):
    """add timeout for socket.recv()
    :type conn: socket.SocketType
    :type buff_size: int
    :type timeout: float
    :rtype: Union[bytes, None]
    """
    rlist, _, _ = select.select([conn], [], [], timeout)
    if not rlist:
        # timeout
        raise RuntimeError("recv timeout")

    buff = conn.recv(buff_size)
    if not buff:
        raise RuntimeError("received zero bytes, socket was closed")

    return buff

def add_conn_pair(self, conn1, conn2, callback=None):
        """
        transfer anything between two sockets

        :type conn1: socket.SocketType
        :type conn2: socket.SocketType
        :param callback: callback in connection finish
        :type callback: Callable
        """
        # mark as readable
        self.conn_rd.add(conn1)
        self.conn_rd.add(conn2)

        # record sockets pairs
        self.map[conn1] = conn2
        self.map[conn2] = conn1

        # record callback
        if callback is not None:
            self.callbacks[conn1] = callback

def _rd_shutdown(self, conn, once=False):
        """action when connection should be read-shutdown
        :type conn: socket.SocketType
        """
        if conn in self.conn_rd:
            self.conn_rd.remove(conn)

        try:
            conn.shutdown(socket.SHUT_RD)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            # if a socket is rd_shutdowned, then it's
            #   pair should be wr_shutdown.
            self._wr_shutdown(self.map[conn], True)

        if self.map.get(conn) not in self.conn_rd:
            # if both two connection pair was rd-shutdowned,
            #   this pair sockets are regarded to be completed
            #   so we gonna close them
            self._terminate(conn)

def patch_socket():
    socket.socket = MockSocket
    socket.socket = socket.__dict__['socket'] = MockSocket
    socket._socketobject = socket.__dict__['_socketobject'] = MockSocket
    socket.SocketType = socket.__dict__['SocketType'] = MockSocket
    socket.create_connection = socket.__dict__['create_connection'] = create_connection
    socket.getaddrinfo = socket.__dict__['getaddrinfo'] = getaddrinfo
    socket.gethostname = socket.__dict__['gethostname'] = lambda: 'localhost'
    socket.gethostbyname = socket.__dict__['gethostbyname'] = lambda host: '127.0.0.1'
    socket.inet_aton = socket.__dict__['inet_aton'] = lambda host: '127.0.0.1'

def add_conn_pair(self, conn1, conn2,tmp=None, callback=None):
        """
        transfer anything between two sockets

        :type conn1: socket.SocketType
        :type conn2: socket.SocketType
        :param callback: callback in connection finish
        :type callback: Callable
        """
        # mark as readable
        self.conn_rd.add(conn1)
        self.conn_rd.add(conn2)

        # record sockets pairs
        self.map[conn1] = conn2
        self.map[conn2] = conn1



        # record callback
        if callback is not None:
            self.callbacks[conn1] = callback

        if tmp is not None:
            conn2.send(tmp)
            logging.info("tmp send:{}".format(len(tmp)))

def _wr_shutdown(self, conn, once=False):
        """action when connection should be write-shutdown
        :type conn: socket.SocketType
        """
        try:
            conn.shutdown(socket.SHUT_WR)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            #   pair should be rd_shutdown.
            # if a socket is wr_shutdowned, then it's
            self._rd_shutdown(self.map[conn], True)

def _terminate(self, conn):
        """terminate a sockets pair (two socket)
        :type conn: socket.SocketType
        :param conn: any one of the sockets pair
        """
        try_close(conn)  # close the first socket

        server_pool.ServerPool.bridgeRemove += 1

        # ------ close and clean the mapped socket, if exist ------
        if conn in self.map:
            _mapped_conn = self.map[conn]
            try_close(_mapped_conn)
            if _mapped_conn in self.map:
                del self.map[_mapped_conn]

            del self.map[conn]  # clean the first socket
        else:
            _mapped_conn = None  # just a fallback

        # ------ callback --------
        # because we are not sure which socket are assigned to callback,
        #   so we should try both
        if conn in self.callbacks:
            try:
                self.callbacks[conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[conn]
        elif _mapped_conn and _mapped_conn in self.callbacks:
            try:
                self.callbacks[_mapped_conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[_mapped_conn]

def _wr_shutdown(self, conn, once=False):
        """action when connection should be write-shutdown
        :type conn: socket.SocketType
        """
        try:
            conn.shutdown(socket.SHUT_WR)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            #   pair should be rd_shutdown.
            # if a socket is wr_shutdowned, then it's
            self._rd_shutdown(self.map[conn], True)

def _terminate(self, conn):
        """terminate a sockets pair (two socket)
        :type conn: socket.SocketType
        :param conn: any one of the sockets pair
        """
        try_close(conn)  # close the first socket

        # ------ close and clean the mapped socket, if exist ------
        if conn in self.map:
            _mapped_conn = self.map[conn]
            try_close(_mapped_conn)
            if _mapped_conn in self.map:
                del self.map[_mapped_conn]

            del self.map[conn]  # clean the first socket
        else:
            _mapped_conn = None  # just a fallback

        # ------ callback --------
        # because we are not sure which socket are assigned to callback,
        #   so we should try both
        if conn in self.callbacks:
            try:
                self.callbacks[conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[conn]
        elif _mapped_conn and _mapped_conn in self.callbacks:
            try:
                self.callbacks[_mapped_conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[_mapped_conn]

def test_SocketType_is_socketobject(self):
        import _socket
        self.assertTrue(socket.SocketType is _socket.socket)
        s = socket.socket()
        self.assertIsInstance(s, socket.SocketType)
        s.close()

def disable(cls):
        cls._is_enabled = False
        socket.socket = old_socket
        socket.SocketType = old_SocketType
        socket._socketobject = old_socket

        socket.create_connection = old_create_connection
        socket.gethostname = old_gethostname
        socket.gethostbyname = old_gethostbyname
        socket.getaddrinfo = old_getaddrinfo

        socket.__dict__['socket'] = old_socket
        socket.__dict__['_socketobject'] = old_socket
        socket.__dict__['SocketType'] = old_SocketType

        socket.__dict__['create_connection'] = old_create_connection
        socket.__dict__['gethostname'] = old_gethostname
        socket.__dict__['gethostbyname'] = old_gethostbyname
        socket.__dict__['getaddrinfo'] = old_getaddrinfo

        if socks:
            socks.socksocket = old_socksocket
            socks.__dict__['socksocket'] = old_socksocket

        if ssl:
            ssl.wrap_socket = old_ssl_wrap_socket
            ssl.SSLSocket = old_sslsocket
            ssl.__dict__['wrap_socket'] = old_ssl_wrap_socket
            ssl.__dict__['SSLSocket'] = old_sslsocket

            if not PY3:
                ssl.sslwrap_simple = old_sslwrap_simple
                ssl.__dict__['sslwrap_simple'] = old_sslwrap_simple

        if pyopenssl_override:
            # Replace PyOpenSSL Monkeypatching
            inject_into_urllib3()

def test_socktype_bad_python_version_regression():
    """ Some versions of python accidentally internally shadowed the SockType
    variable, so it was no longer the socket object but and int Enum representing
    the socket type e.g. AF_INET. Make sure we don't patch SockType in these cases
    https://bugs.python.org/issue20386
    """
    import socket
    someObject = object()
    with patch('socket.SocketType', someObject):
        HTTPretty.enable()
        expect(socket.SocketType).to.equal(someObject)
        HTTPretty.disable()

def test_socktype_good_python_version():
    import socket
    with patch('socket.SocketType', socket.socket):
        HTTPretty.enable()
        expect(socket.SocketType).to.equal(socket.socket)
        HTTPretty.disable()

def _wr_shutdown(self, conn, once=False):
        """action when connection should be write-shutdown
        :type conn: socket.SocketType
        """
        try:
            conn.shutdown(socket.SHUT_WR)
        except:
            pass

        if not once and conn in self.map:  # use the `once` param to avoid infinite loop
            #   pair should be rd_shutdown.
            # if a socket is wr_shutdowned, then it's
            self._rd_shutdown(self.map[conn], True)

def _terminate(self, conn):
        """terminate a sockets pair (two socket)
        :type conn: socket.SocketType
        :param conn: any one of the sockets pair
        """
        try_close(conn)  # close the first socket

        # ------ close and clean the mapped socket, if exist ------
        if conn in self.map:
            _mapped_conn = self.map[conn]
            try_close(_mapped_conn)
            if _mapped_conn in self.map:
                del self.map[_mapped_conn]

            del self.map[conn]  # clean the first socket
        else:
            _mapped_conn = None  # just a fallback

        # ------ callback --------
        # because we are not sure which socket are assigned to callback,
        #   so we should try both
        if conn in self.callbacks:
            try:
                self.callbacks[conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[conn]
        elif _mapped_conn and _mapped_conn in self.callbacks:
            try:
                self.callbacks[_mapped_conn]()
            except Exception as e:
                log.error("traceback error: {}".format(e))
                log.debug(traceback.format_exc())
            del self.callbacks[_mapped_conn]

def enable(cls):
        cls._is_enabled = True
        # Some versions of python internally shadowed the
        # SocketType variable incorrectly https://bugs.python.org/issue20386
        bad_socket_shadow = (socket.socket != socket.SocketType)

        socket.socket = fakesock.socket
        socket._socketobject = fakesock.socket
        if not bad_socket_shadow:
            socket.SocketType = fakesock.socket

        socket.create_connection = create_fake_connection
        socket.gethostname = fake_gethostname
        socket.gethostbyname = fake_gethostbyname
        socket.getaddrinfo = fake_getaddrinfo

        socket.__dict__['socket'] = fakesock.socket
        socket.__dict__['_socketobject'] = fakesock.socket
        if not bad_socket_shadow:
            socket.__dict__['SocketType'] = fakesock.socket

        socket.__dict__['create_connection'] = create_fake_connection
        socket.__dict__['gethostname'] = fake_gethostname
        socket.__dict__['gethostbyname'] = fake_gethostbyname
        socket.__dict__['getaddrinfo'] = fake_getaddrinfo

        if socks:
            socks.socksocket = fakesock.socket
            socks.__dict__['socksocket'] = fakesock.socket

        if ssl:
            ssl.wrap_socket = fake_wrap_socket
            ssl.SSLSocket = FakeSSLSocket

            ssl.__dict__['wrap_socket'] = fake_wrap_socket
            ssl.__dict__['SSLSocket'] = FakeSSLSocket

            if not PY3:
                ssl.sslwrap_simple = fake_wrap_socket
                ssl.__dict__['sslwrap_simple'] = fake_wrap_socket

        if pyopenssl_override:
            # Remove PyOpenSSL monkeypatch - use the default implementation
            extract_from_urllib3()