WEB静态服务器-使用单进程、线程、非堵塞实现长连接的http服务器

WEB静态服务器

单进程、线程、非堵塞、、长连接的http服务器

代码示例如下：

import socket
import re


def service_client(new_socket, request):
    """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
    # # ......
    # global response
    # request = new_socket.recv(1024).decode("utf-8")
    # # print(">>" * 50)
    # # print(request)

    request_lines = request.splitlines()
    print("")
    print(">"*50)
    print(request_lines)

    # GET /index.html HTTP/1.1
    # get post put del              正则1：r"[^/]+(/[^ ]*)"      正则2：r".*(/.*?\..*?) HTTP.*"
    file_name = ""
    req_str = re.search(r"[?/html](/.*?\..*?) HTTP.*", request_lines[0])  # 匹配第一个元素的 ‘HTTP’ 之前的文件名
    print(req_str)
    if req_str:
        file_name = req_str.group(1)
        print("*"*50, file_name)
        if file_name == "/":
            file_name = "/html/index.html"

    # 2、返回 http格式的数据，给浏览器

    try:
        file = open("./html" + file_name, "rb")
    except IOError:
        # 404表示没有这个页面
        response = "HTTP/1.1 404 NOT FOUND\r\n"
        response += "\r\n"
        response += "------FILE  NOT  FOUND------"
        new_socket.send(response.encode("utf-8"))

    else:
        html_content = file.read()
        file.close()

        response_body = html_content

        # 2.1、准备发送给浏览器的数据---header
        response_header = "HTTP/1.1 200 OK\r\n"
        response_header += "Content-Length:%d\r\n" % len(html_content)  # 长连接
        response_header += "\r\n"

        response = response_header.encode("utf-8") + response_body  # 二进制

        # 2.2、准备发送给浏览器的数据---body
        # 将response header 发送给浏览器
        new_socket.send(response)

    # 关闭套接字
    # new_socket.close()


def main():
    """作为程序的主控制入口"""
    # 1、创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # 2、绑定
    tcp_server_socket.bind(("", 12708))

    # 3、变为监听套接字
    tcp_server_socket.listen(128)
    tcp_server_socket.setblocking(False)  # 将套接字变为非堵塞

    client_socket_list = list()
    while True:
        # 4、等待新客户端 的链接
        try:
            new_socket, client_addr = tcp_server_socket.accept()
        except Exception as ret_info:
            pass
        else:
            new_socket.setblocking(False)
            client_socket_list.append(new_socket)

        for client_socket in client_socket_list:
            try:
                recv_data = client_socket.recv(1024).decode("utf-8")
            except Exception as ret_info:
                pass
            else:
                if recv_data:
                    service_client(client_socket, recv_data)
                else:
                    client_socket.close()
                    client_socket_list.remove(client_socket)

    # 关闭套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()