就业DAY7_web服务器_tcp三次握手四次挥手,返回浏览器需要的页面http服务器

 

 

 

 

 

 

import socket


def servece_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 浏览器的数据---header
    response = "HTTP/1.1 200 OK\r\n"
    response += "\r\n"
    # 2.1 准备发送给浏览器 浏览器的数---body
    response += "<h1> 呵呵 </h1>"
    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)
    # 设置当前服务器先close 即服务器端四次挥手之后资源能够被立即释放，这样就保证了，下次运行程序时刻重复使用
    tcp_server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    # 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
        servece_client(new_socket)
    # 关闭套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

import socket
import re

def servece_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(">>>"*50)
    #print(request)
    request_lines = request.splitlines()
    print("")
    print(">"*20)
    print(request_lines)
    # GET /index.html HTTP/1.1
    # get put put del
    file_name = ""
    ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])

    if ret:
        file_name = ret.group(1)
        print("*"*50, file_name)
        if file_name == "/":
            file_name = "/index.html"

    # 2 返回http格式的数据，给浏览器


    #response += "<h1> 呵呵 </h1>"
    try:
        f = open("./html" + file_name, "rb")
    except:
        response = "HTTP/1.1 404 NOT FOUND\r\n"
        response += "\r\n"
        response += "file not found"
        new_socket.send(response.encode("utf-8"))
        new_socket.send(response)
    else:
        html_content = f.read()
        f.close()
        # 2.1 准备发送给浏览器 浏览器的数据---header
        response = "HTTP/1.1 200 OK\r\n"
        response += "\r\n"
        # 2.1 准备发送给浏览器 浏览器的数---body
        # 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)
    # 设置当前服务器先close 即服务器端四次挥手之后资源能够被立即释放，这样就保证了，下次运行程序时刻重复使用
    tcp_server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    # 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
        servece_client(new_socket)
    # 关闭套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()