浅析Python中如何处理Socket超时

import socket

def create_socket_with_timeout(timeout):
    # 创建一个TCP/IP socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 设置超时时间
    sock.settimeout(timeout)

    try:
        # 尝试连接到服务器
        sock.connect(('example.com', 80))
        print("连接成功")
    except socket.timeout:
        print("连接超时")
    finally:
        sock.close()

if __name__ == "__main__":
    create_socket_with_timeout(5)  # 设置超时时间为5秒

import socket

def handle_socket_timeout():
    # 创建一个TCP/IP socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 设置超时时间
    sock.settimeout(5)

    try:
        # 尝试连接到服务器
        sock.connect(('example.com', 80))
        print("连接成功")

        # 发送HTTP请求
        sock.sendall(b'GET / HTTP/1.1\r\nHost: example.com\r\n\r\n')

        # 接收数据
        data = sock.recv(1024)
        print("接收到的数据:", data)
    except socket.timeout:
        print("操作超时")
    finally:
        sock.close()

if __name__ == "__main__":
    handle_socket_timeout()

import socket
import select

def use_select_for_non_blocking_io():
    # 创建一个TCP/IP socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 设置为非阻塞模式
    sock.setblocking(False)

    try:
        # 尝试连接到服务器
        sock.connect(('example.com', 80))
    except BlockingIOError:
        pass

    # 使用select监控连接状态
    ready_to_read, _, _ = select.select([sock], [], [], 5)

    if ready_to_read:
        print("连接成功")

        # 发送HTTP请求
        sock.sendall(b'GET / HTTP/1.1\r\nHost: example.com\r\n\r\n')

        # 接收数据
        data = sock.recv(1024)
        print("接收到的数据:", data)
    else:
        print("连接超时")

    sock.close()

if __name__ == "__main__":
    use_select_for_non_blocking_io()

import socket

def download_music_file(url):
    # 创建一个TCP/IP socket
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 设置超时时间
    sock.settimeout(10)

    try:
        # 解析URL获取主机和端口
        host, port = url.split(':')
        port = int(port)

        # 连接到服务器
        sock.connect((host, port))

        # 发送HTTP请求
        sock.sendall(f'GET {url} HTTP/1.1\r\nHost: {host}\r\n\r\n'.encode())

        # 接收数据
        data = b''
        while True:
            chunk = sock.recv(1024)
            if not chunk:
                break
            data += chunk

        # 保存音乐文件
        with open('music.mp3', 'wb') as f:
            f.write(data)

        print("音乐文件下载成功")
    except socket.timeout:
        print("下载超时，请检查网络连接")
    except Exception as e:
        print(f"发生错误: {e}")
    finally:
        sock.close()

if __name__ == "__main__":
    download_music_file('example.com:80/music.mp3')