Python编程：socket实现简单的网站服务器

# 用socket实现一个简单的服务器，可以通过浏览器来访问
import socket
def handle(conn):  # 请求处理函数
    data = conn.recv(1024)
    print(data)
    conn.send(bytes("HTTP/1.1 200 OK\r\n\r\n",encoding="utf-8"))
    conn.send(bytes("<h1>hello world<h1>",encoding="utf-8"))
def main():
    server = socket.socket()
    server.bind(("localhost", 8000))
    server.listen(5)
    print("服务启动")
    while True:
        conn, addr = server.accept()
        print(conn, addr)
        handle(conn)
        conn.close()
if __name__ == "__main__":
    main()
"""data
GET / HTTP/1.1
Host: 127.0.0.1:8000
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) 
    AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate, sdch, br
Accept-Language: zh-CN,zh;q=0.8
Cookie: csrftoken=u8AqdKAvfHiF0To5s8p3Dqxec2uSWldxnOOpOEbUVLPHTWVWDSUck4zFjNPxjV8V
"""

# 改进版服务器，可以从文件中读取文件并发送给客户端
import socket
def handle(conn):
    buf = conn.recv(1024)
    conn.send(bytes("HTTP/1.1 200 OK\r\n\r\n",encoding="utf-8"))
    f = open("index.html", "rb")
    data = f.read()
    f.close()
    conn.send(data)
def main():
    server = socket.socket()
    server.bind(("localhost", 8000))
    server.listen(5)
    print("服务启动")
    while True:
        conn, addr = server.accept()
        print(conn, addr)
        handle(conn)
        conn.close()
if __name__ == "__main__":
    main()

# 改进版服务器，可以从文件中读取文件并替换变量 发送给客户端
import socket
import time
def handle(conn):
    buf = conn.recv(1024)
    conn.send(bytes("HTTP/1.1 200 OK\r\n\r\n",encoding="utf-8"))
    f = open("index.html", "r")
    data = f.read()
    f.close()
    now_time = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())
    html = data.replace("{{time}}", now_time)
    conn.send(bytes(html, encoding="utf-8"))
def main():
    server = socket.socket()
    server.bind(("localhost", 8000))
    server.listen(5)
    print("服务启动")
    while True:
        conn, addr = server.accept()
        print(conn, addr)
        handle(conn)
        conn.close()
if __name__ == "__main__":
    main()