python socket编程

Socket网络编程

计算机之间进行连接通信的一套程序接口，相当于在发送端和接收端建立通信管道。

编写TCP使用Socket模块，方法包括：

• connect: 连接远程计算机地址
• send(bytes[,flag]):发送数据
• recv(bufsize[,flags]):接收数据
• bind(address):绑定地址
• listen(backlog):开始监听,backlog指定连接队列最大长度
• accept():响应客户端请求，接收连接

# server 
# coding: utf-8  
import socket  
  
HOST = "127.0.0.1"  
PORT = 6666  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
s.bind((HOST, PORT))  
s.listen(1)  
print("Listening at port 666")  
conn, addr = s.accept()  
print("conn address", addr)  
  
while True:  
    data = conn.recv(1024)  
    data = data.decode()  
    if not data:  
        break  
    print("Received message:", data)  
    conn.sendall("noting".encode())  
  
conn.close()  
s.close()

# client
# coding: utf-8  
import socket, sys  
  
HOST = "127.0.0.1"  
PORT = 6666  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
try:  
    s.connect((HOST, PORT))  
except Exception as e:  
    print("server not found")  
    sys.exit()  
while True:  
    c = input("say")  
    s.sendall(c.encode())  
    data = s.recv(1024)  
    data = data.decode()  
    print(data)  
    if c.lower() == "再见":  
        break  
s.close()