就業DAY7_web服務器_tcp三次握手四次揮手,返回瀏覽器須要的頁面http服務器

 

 

 

 

 

 

import socket


def servece_client(new_socket):
    """爲這個客戶端返回數據"""
    # 1 接收瀏覽器發送過來的請求，即http請求
    # GET / HTTP/1.1
    # ...
    request = new_socket.recv(1024)
    print(request)
    # 2 返回http格式的數據，給瀏覽器
    # 2.1 準備發送給瀏覽器 瀏覽器的數據---header
    response = "HTTP/1.1 200 OK\r\n"
    response += "\r\n"
    # 2.1 準備發送給瀏覽器 瀏覽器的數---body
    response += "<h1> 呵呵 </h1>"
    new_socket.send(response.encode("utf-8"))
    # 關閉套接字
    new_socket.close()


def main():
    """用來完成總體的控制"""
    # 1 建立套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 設置當前服務器先close 即服務器端四次揮手以後資源可以被當即釋放，這樣就保證了，下次運行程序時刻重複使用
    tcp_server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    # 2 綁定
    tcp_server_socket.bind(("",7890))
    # 3 變爲監聽套接字
    tcp_server_socket.listen(128)
    while True:
        # 4 等待新客戶端的連接
        new_socket, client_addr = tcp_server_socket.accept()
        # 5 爲這個客戶端服務
        servece_client(new_socket)
    # 關閉套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

import socket
import re

def servece_client(new_socket):
    """爲這個客戶端返回數據"""
    # 1 接收瀏覽器發送過來的請求，即http請求
    # 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格式的數據，給瀏覽器


    #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 準備發送給瀏覽器 瀏覽器的數據---header
        response = "HTTP/1.1 200 OK\r\n"
        response += "\r\n"
        # 2.1 準備發送給瀏覽器 瀏覽器的數---body
        # 將response header發送給瀏覽器
        new_socket.send(response.encode("utf-8"))
        # 將response body 發送給瀏覽器
        new_socket.send(html_content)

    # 關閉套接字
    new_socket.close()


def main():
    """用來完成總體的控制"""
    # 1 建立套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 設置當前服務器先close 即服務器端四次揮手以後資源可以被當即釋放，這樣就保證了，下次運行程序時刻重複使用
    tcp_server_socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
    # 2 綁定
    tcp_server_socket.bind(("",7890))
    # 3 變爲監聽套接字
    tcp_server_socket.listen(128)
    while True:
        # 4 等待新客戶端的連接
        new_socket, client_addr = tcp_server_socket.accept()
        # 5 爲這個客戶端服務
        servece_client(new_socket)
    # 關閉套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()