如何在Python中进行网络编程

import socket

server_address = ('localhost', 8888)  # 服务端地址和端口号

# 创建TCP套接字
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接服务端
sock.connect(server_address)

# 发送数据
message = "Hello, Server!"
sock.sendall(message.encode())

# 接收数据
data = sock.recv(1024)
print(f"Received: {data.decode()}")

# 关闭连接
sock.close()

import socket

server_address = ('localhost', 8888)  # 服务端地址和端口号

# 创建UDP套接字
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 发送数据
message = "Hello, Server!"
sock.sendto(message.encode(), server_address)

# 接收数据
data, server = sock.recvfrom(1024)
print(f"Received: {data.decode()}")

# 关闭套接字
sock.close()

import socket

server_address = ('localhost', 8888)  # 服务端地址和端口号

# 创建TCP套接字
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 绑定地址和端口号
sock.bind(server_address)

# 等待客户端连接
sock.listen(1)

while True:
    print("Waiting for a connection...")
    client_sock, client_address = sock.accept()
    try:
        print(f"Connection from {client_address}")

        # 接收数据
        data = client_sock.recv(1024)
        print(f"Received: {data.decode()}")

        # 发送数据
        message = "Hello, Client!"
        client_sock.sendall(message.encode())
    finally:
        # 关闭连接
        client_sock.close()

import socket

server_address = ('localhost', 8888)  # 服务端地址和端口号

# 创建UDP套接字
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 绑定地址和端口号
sock.bind(server_address)

print("Server is running...")

while True:
    # 接收数据
    data, address = sock.recvfrom(1024)
    print(f"Received: {data.decode()}")

    # 发送数据
    message = "Hello, Client!"
    sock.sendto(message.encode(), address)