简单的web服务器实现

 

案例：返回固定页面的http服务器

import socket
def service_client(new_socket):
    """为这个客户端返回数据"""
    #1.接收浏览器发送过来的请求，即http请求
    #GET /HTTP/1.1
    #......
    request = new_socket.recv(1024)
    print(request)
    #2.返回http格式的数据，给浏览器
    #2.1准备发送给浏览器的数据 ---header
    response = "HTTP/1.1 200 OK\r\n"
    response += "\r\n"
    #2.2准备发送给浏览器的数据 ---boy
    response +="hahahaha"
    new_socket.send(response.encode("utf-8"))
    #关闭套接字
    new_socket.close()

def main():
    """用来完成整体的控制"""
    #1.创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    #2.绑定
    tcp_server_socket.bind(("",7890))
    #3.变为监听套接字
    tcp_server_socket.listen(128)
    while True:
        #4.等待新客户端的链接
        new_socket, client_addr = tcp_server_socket.accept()
        #5.为这个客户端服务
        service_client(new_socket)
    #关闭监听套接字
    tcp_server_socket.close()
if __name__ == "__main__":
    main()

 

import socket
def service_client(new_socket):
    """为这个客户端返回数据"""
    #1.接收浏览器发送过来的请求，即http请求
    #GET /HTTP/1.1
    #......
    request = new_socket.recv(1024).decode("utf-8")
    print(request)
    request_lines = request.splitlines()
    print("")
    print(">"*20)
    print(request_lines)
    ret = file_name = re.match(r"[^/]+/[^ ]*)",request_lines[0])
    if ret:
        file_name = ret.group(1)
        print("*"*50,file_name)
    #2.返回http格式的数据，给浏览器
    #2.1准备发送给浏览器的数据 ---header
    response = "HTTP/1.1 200 OK\r\n"
    response += "\r\n"
    #2.2准备发送给浏览器的数据 ---boy
    #response +="hahahaha"
    f = open("./html"+file_name,"rb")
    html_content = f.read()
    f.close()
    #将response header发送给浏览器
    new_socket.send(response.encode("utf-8"))
    #将response body 发送给浏览器
    new_socket.send(html_content)
    #关闭套接字
    new_socket.close()

def main():
    """用来完成整体的控制"""
    #1.创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    #2.绑定
    tcp_server_socket.bind(("",7890))
    #3.变为监听套接字
    tcp_server_socket.listen(128)
    while True:
        #4.等待新客户端的链接
        new_socket, client_addr = tcp_server_socket.accept()
        #5.为这个客户端服务
        service_client(new_socket)
    #关闭监听套接字
    tcp_server_socket.close()
if __name__ == "__main__":
    main()