Python AsyncIO无法创建协议,因为尽管存在传输,但缺少传输
我正在尝试使用AsyncIO的AsyncIO.protocol编写一个代理服务器,这似乎在很大程度上起到了作用。但我遇到了一个让我非常困惑的错误 我的代码如下所示:Python AsyncIO无法创建协议,因为尽管存在传输,但缺少传输,python,asynchronous,python-asyncio,Python,Asynchronous,Python Asyncio,我正在尝试使用AsyncIO的AsyncIO.protocol编写一个代理服务器,这似乎在很大程度上起到了作用。但我遇到了一个让我非常困惑的错误 我的代码如下所示: import asyncio import socket users = {} class UserConnection(object): def __init__(self, client_socket, proxy_socket, peername): self.client_socket = cli
import asyncio
import socket
users = {}
class UserConnection(object):
def __init__(self, client_socket, proxy_socket, peername):
self.client_socket = client_socket
self.proxy_socket = proxy_socket
self.peername = peername
class ClientProxyProtocol(asyncio.Protocol):
def __init__(self):
self.transport = None
self.session = None
server_connection = loop.create_connection(
lambda: ProxyForwardProtocol,
host="127.0.0.1",
port=25575)
task = loop.create_task(server_connection)
task.add_done_callback(self.handle_proxy_connection)
def connection_made(self, transport):
# Get peername, client socket and create proxy socket
peername = transport.get_extra_info('peername')
client_socket = transport.get_extra_info('socket')
# Get session object for a user and add in dict keyed of proxy socket
self.session = UserConnection(client_socket, None, peername)
print('Connection from {}'.format(peername))
self.transport = transport
def handle_proxy_connection(self, task):
trans, proto = task.result()
proxy_socket = trans.get_extra_info("socket")
self.session.proxy_socket = proxy_socket
users[proxy_socket] = self.session
print(trans,"\n",proto)
def data_received(self, data):
message = str(data)
print('Data received: {!r}'.format(message))
def connection_lost(self, exc):
print('Close the client socket')
self.transport.close()
class ProxyForwardProtocol(asyncio.Protocol):
def __init__(self,transport):
self.transport = transport
def connection_made(self, transport):
proxy_socket = transport.get_extra_info("socket")
print("HELLO")
self.transport = transport
def connection_lost(self, exc):
print("closing forward connection")
self.transport.close()
loop = asyncio.get_event_loop()
# Each client connection will create a new protocol instance
coro = loop.create_server(ClientProxyProtocol, '127.0.0.1', 25565)
server = loop.run_until_complete(coro)
# Serve requests until Ctrl+C is pressed
print('Serving on {}'.format(server.sockets[0].getsockname()))
try:
loop.run_forever()
except KeyboardInterrupt:
pass
# Close the server
server.close()
loop.run_until_complete(server.wait_closed())
loop.close()
运行这个脚本在某种程度上工作得非常好,它接受新的连接并启动一个新的协议实例,但在尝试与我的目标服务器建立协议连接后,它会产生以下错误。它会产生以下错误:
Exception in callback ProxyForwardProtocol.connection_made(<_SelectorSoc...e, bufsize=0>>) at .\asyncproto.py:53
handle: <Handle ProxyForwardProtocol.connection_made(<_SelectorSoc...e, bufsize=0>>) at .\asyncproto.py:53>
Traceback (most recent call last):
File "C:\Users\Huhn\AppData\Local\Programs\Python\Python36-32\lib\asyncio\events.py", line 126, in _run
self._callback(*self._args)
TypeError: connection_made() missing 1 required positional argument: 'transport'
回调ProxyForwardProtocol中出现异常。连接(>)位于。\asyncproto.py:53
句柄:)位于。\asyncproto.py:53>
回溯(最近一次呼叫最后一次):
文件“C:\Users\Huhn\AppData\Local\Programs\Python\Python36-32\lib\asyncio\events.py”,第126行,正在运行
self.\u回调(*self.\u参数)
TypeError:连接()缺少1个必需的位置参数:“传输”
我的问题如下:句柄显示连接方法接收SelectorSocketTransport,我假设它是一个传输,但仍然说它缺少一个传输。那对我来说毫无意义
如果有人能告诉我我的错误在哪里,我将不胜感激,因为我还没有找到有类似问题的人,而且我有点被卡住了。如果我对代理有任何架构上的误解,请随意指出。我这样做是作为一个教学练习,这就是为什么我没有使用第三方替代方案的原因,可能存在于那里
谢谢看来你刚刚在
ClientProxyProtocol.\uuu init\uuu()
中输入了一个错误
在create\u connection
中,第一个参数必须是可调用的,它返回协议对象,而不是(lambda:ProxyForwardProtocol)
返回协议类
因此,当框架调用connection\u make()
时,它将传递一个参数(transport),但第一个参数必须是self
。协议是一个类,而不是类实例->方法未绑定连接()
删除ProxyForwardProtocol.\uuuuu init\uuuuu
方法并更改您的调用,如下所示:
server_connection = loop.create_connection(
ProxyForwardProtocol,
host="127.0.0.1",
port=25575)
哦,老兄,你不会相信我是多么感激你,工作完全如预期。谢谢你这么多,这将节省我很多头痛!