Web服务器

Web服务器是可以向发出请求的浏览器提供文档的程序。

Code:

# coding:utf-8
import socket
import re

from multiprocessing import Process

# 设置静态文件根目录
HTML_ROOT_DIR = "./html"


def handle_client(client_socket):
    """处理客户端请求"""
    # 获取客户端请求数据
    request_data = client_socket.recv(1024)
    print("request data:",request_data)
    request_lines = request_data.splitlines()
    for line in request_lines:
        print(line)

    # 解析请求报文
    # 'GET / HTTP/1.1'
    request_start_line = request_lines[0]
    #提取用户请求的文件名
    file_name = re.match(r"\w+ +(/[^ ]*) ",request_start_line.decode("utf-8")).group(1)

    if "/" == file_name:
        file_name = "/index.html"
    # 打开文件，读取内容
    try:
        file = open(HTML_ROOT_DIR + file_name,"rb")
    except IOError:
        response_start_line = "HTTP/1.1 404 Not Found\r\n"
        response_headers = "Server: My server\r\n"
        response_body = "the file is not found"
    else:
        file_data = file.read()
        file.close()

        # 构造响应数据
        response_start_line = "HTTP/1.1 200 OK\r\n"
        response_headers = "Server: My server\r\n"
        response_body = file_data.decode("utf-8")

    response = response_start_line + response_headers + "\r\n" + response_body
    print("response:",response)

    # 向客户端返回响应数据
    client_socket.send(bytes(response,"utf-8"))

    #关闭客户端链接
    client_socket.close()

def main():
    server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    #SOL_SOCKET:设置选项级别为SOCKET
    #SO_REUSEADDR:1
    server_socket.bind(("",7788))
    server_socket.listen(128)

    while True:
        client_socket,client_address= server_socket.accept()
        print("[%s,%s]用户连接上了"%(client_address))
        handle_client_process = Process(target=handle_client,args=(client_socket,))
        handle_client_process.start()
        client_socket.close()

if __name__ == "__main__":
    main()

访问Web服务器

在浏览器地址栏输入 127.0.0.1:7788或127.0.0.1:7788/index.html

项目文件结构