Question

我写了一个简单的袖珍服务器,我希望跟踪客户状况(真实和 st)。每次处理时,我都不了解有关该客户的任何情况。如果我知道客户身份或某件事,会有所帮助。这里我迄今为止所做的事情:

import asyncore
import socket

class EchoHandler(asyncore.dispatcher_with_send):

    def handle_read(self):
        data = self.recv(8192)
        self.send(data)

class EchoServer(asyncore.dispatcher):

    def __init__(self, host, port):
        asyncore.dispatcher.__init__(self)
        self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
        self.set_reuse_addr()
        self.bind((host, port))
        self.listen(5)

    def handle_accept(self):
        pair = self.accept()
        if pair is None:
            pass
        else:
            sock, addr = pair
            print  Incoming connection from %s  % repr(addr)
            handler = EchoHandler(sock)

server = EchoServer( localhost , 8080)
asyncore.loop()

Answer 1

你在接到<条码>查询时确实知道客户的身份。回归的图象是IP,是该客户的一个独一无二的数字,在你希望向该客户发送数据时可以使用。如果你想保留客户名单,你就应考虑一名字典,在接收新链接时,储存客户的信息。

If you wanted that information passed on to the handle_read function, your code would look something like below:

class EchoHandler(asyncore.dispatcher_with_send):
    def setAddr(self, addr):
        self.addr = addr

    def handle_read(self):
        data = self.recv(8192)
        print  %s from %s  % (data, self.addr)
        self.send(data)

class EchoServer(asyncore.dispatcher):

    def __init__(self, host, port):
        asyncore.dispatcher.__init__(self)
        self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
        self.set_reuse_addr()
        self.bind((host, port))
        self.listen(5)

    def handle_accept(self):
        pair = self.accept()
        if pair is None:
            pass
        else:
            sock, addr = pair
            print  Incoming connection from %s  % repr(addr)
            handler = EchoHandler(sock)
            handler.setAddr(addr) #Set the address of the sender in the EchoHandler

简单地将客户的地址寄给EchoHandler,现在你们知道它来自哪里。希望这一帮助/工作!

Answer 2

The only "id" that you can get from sockets directly is the reference to the socket and the sender s address. Everything else is based on the data that you receive - your client could e.g. send its id as the first 16 bytes, anything after that would be data. This means effectively implementing a protocol that fulfills your requirements.

更方便、更妥善地解决认证问题的办法,是使用一些图书馆,例如:sl,载于python标准图书馆。 <代码>sl 图书馆提供加密和认证机制,其形式可以很容易地用在书状上。如果你需要可靠的认证,我强烈建议利用现有解决办法。

友情链接