monkey.py 文件源码

def patch_socket(dns=True, aggressive=True):
    """Replace the standard socket object with gevent's cooperative sockets.

    If ``dns`` is true, also patch dns functions in :mod:`socket`.
    """
    from gevent import socket
    # Note: although it seems like it's not strictly necessary to monkey patch 'create_connection',
    # it's better to do it. If 'create_connection' was not monkey patched, but the rest of socket module
    # was, create_connection would still use "green" getaddrinfo and "green" socket.
    # However, because gevent.socket.socket.connect is a Python function, the exception raised by it causes
    # _socket object to be referenced by the frame, thus causing the next invocation of bind(source_address) to fail.
    if dns:
        items = socket.__implements__
    else:
        items = set(socket.__implements__) - set(socket.__dns__)
    patch_module('socket', items=items)
    if aggressive:
        if 'ssl' not in socket.__implements__:
            remove_item(socket, 'ssl')