python2.7_1.14_编写一个简单的回显客户端/服务器应用
1、服务端 server.py
# -*- coding: utf-8 -*- import socket import argparse host = 'localhost' data_payload = 2048 backlog = 5 def echo_server(port): # 建立一个TCP服务端 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 设置套接字复用 sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) # 绑定套接字到端口 server_address = (host, port) print 'Starting up echo server on %s port %s' % server_address sock.bind(server_address) # 监听客户端,backlog值设定连接序列的最大编号 sock.listen(backlog) while True: print 'Waiting to receive message from client' client, address = sock.accept() data = client.recv(data_payload) if data: print 'Receive Data:%s' % data # 返回处理过的数据 data = '<worked>'+data+'</worked>' client.send(data) print 'Sent %s bytes back to %s' % (data, address) # 断开连接 client.close() if __name__ == '__main__': parser = argparse.ArgumentParser(description='Socket Server Example') parser.add_argument('--port', action='store', dest='port', type=int, required=True) given_args = parser.parse_args() port = given_args.port echo_server(port)
2、客户端client.py
# -*- coding: utf-8 -*- import socket import argparse host = 'localhost' def echo_client(port): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_address = (host, port) print 'Connecting to %s port %s' % server_address sock.connect(server_address) try: message = '我是一个程序猿' # 将内容在CMD窗口内转换成GBK编码 message = message.decode('utf-8').encode('gbk') print 'Sending: %s' % message sock.sendall(message) amount_received = 0 amount_expected = len(message) while amount_received < amount_expected: data = sock.recv(16) amount_received += len(data) print 'Received:%s' % data except socket.error, e: print 'Socket error: %s' % str(e) except Exception, e: print 'Other error: %s' % str(e) finally: print 'Closing connection to the server' sock.close() if __name__ == '__main__': parser = argparse.ArgumentParser(description='Socket Server Example') parser.add_argument('--port', action='store', dest='port', type=int, required=True) given_args = parser.parse_args() port = given_args.port print port echo_client(port)
3.运行
python server.py --port=9900
python client.py --port=9900