实现服务器与客户端的简单通信

服务器代码 

import socket
def tcp_server():s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)#tcp的socket, 开启一个缓冲区addr=("192.168.0.106",2000)s.bind(addr)s.listen(128)#同时可以往缓冲区中放入的连接数new_client, client_addr=s.accept()#和客户端的s.connect()一起实现三次握手, 接收连接请求, 返回客户端的IP地址和端口号print(client_addr)new_client.send("I am serve".encode('utf8'))data=new_client.recv(100)print(data.decode('utf8'))new_client.close()#开始四次挥手s.close()
def udp_server():s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  # 第一个socket代表socket包, 第二个socket代表socket类addr = ("192.168.0.106", 2000)  # 写1024以上端口s.bind(addr)  # 失败直接抛出异常,绑定服务器的IP地址和端口data, client_addr = s.recvfrom(100)  # 100代表接收100字节, recvfrom的大小要>sendto发送的大小s.sendto('world'.encode('utf8'), client_addr)s.close()
if __name__=="__main__":tcp_server()

客户端代码 

import socket
def udp_client():client=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)dest_addr=("192.168.0.106",2000)#写1024以上端口, 目标服务器的IP地址和端口client.sendto(b'hello',dest_addr)data, _=client.recvfrom(100)print(data.decode('utf8'))client.close()
def tcp_client():client=socket.socket(socket.AF_INET, socket.SOCK_STREAM)dest_addr=("192.168.0.106",2000)client.connect(dest_addr)data=client.recv(100)print(data.decode('utf8'))client.send("I am a man".encode('utf8'))client.close()
if __name__=="__main__":tcp_client()