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Python套接字侦听

Python套接字侦听

玩了一段时间后,终于可以使用python 2.7在本地进行telnet会话了。

它的作用是建立一个线程,该线程在客户端连接侦听客户端内容时运行。

当客户端发送返回消息时(如果您与Linux系统交互,“ \ r \ n”可能必须更改该消息?),该消息被打印到服务器,而如果在服务器端有原始输入,则会发生这种情况。将发送给客户:

import socket
import threading
host = ''
port = 50000
connectionSevered=0

class client(threading.Thread):
    def __init__(self, conn):
        super(client, self).__init__()
        self.conn = conn
        self.data = ""
    def run(self):
        while True:
            self.data = self.data + self.conn.recv(1024)
            if self.data.endswith(u"\r\n"):
                print self.data
                self.data = ""

    def send_msg(self,msg):
        self.conn.send(msg)

    def close(self):
        self.conn.close()

try:
    s = socket.socket(socket.AF_INET, socket.soCK_STREAM)
    s.bind((host,port))
    s.listen(5)
except socket.error:
    print 'Failed to create socket'
    sys.exit()

print '[+] Listening for connections on port: {0}'.format(port)


conn, address = s.accept()
c = client(conn)
c.start()
print '[+] Client connected: {0}'.format(address[0])
c.send_msg(u"\r\n")
print "connectionSevered:{0}".format(connectionSevered) 
while (connectionSevered==0):
    try:
        response = raw_input()  
        c.send_msg(response + u"\r\n")
    except:
        c.close()

以上答案仅适用于单个连接。我通过添加一个用于连接的线程来更新它。现在,可以有多个用户连接。

import socket
import threading
import sys
host = ''
port = 50000

class client(threading.Thread):
    def __init__(self, conn):
        super(client, self).__init__()
        self.conn = conn
        self.data = ""

    def run(self):
        while True:
            self.data = self.data + self.conn.recv(1024)
            if self.data.endswith(u"\r\n"):
                print self.data
                self.data = ""

    def send_msg(self,msg):
        self.conn.send(msg)

    def close(self):
        self.conn.close()

class connectionThread(threading.Thread):
    def __init__(self, host, port):
        super(connectionThread, self).__init__()
        try:
            self.s = socket.socket(socket.AF_INET, socket.soCK_STREAM)
            self.s.bind((host,port))
            self.s.listen(5)
        except socket.error:
            print 'Failed to create socket'
            sys.exit()
        self.clients = []

    def run(self):
        while True:
            conn, address = self.s.accept()
            c = client(conn)
            c.start()
            c.send_msg(u"\r\n")
            self.clients.append(c)
            print '[+] Client connected: {0}'.format(address[0])



def main():
    get_conns = connectionThread(host, port)
    get_conns.start()
    while True:
        try:
            response = raw_input() 
            for c in get_conns.clients:
                c.send_msg(response + u"\r\n")
        except KeyboardInterrupt:
            sys.exit()

if __name__ == '__main__':
    main()

客户端看不到其他客户端说的话,来自服务器的消息将被发送到所有客户端。我将其留给读者练习。

python 2022/1/1 18:36:47 有242人围观

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