web服务器1.HTTP协议介绍2.http协议分析3.总结4Web静态服务器

import socket
import multiprocessing
import os
import time


def serverHandler(clientSocket, clientAddr):
    '与请求的客户端进行交互'
    # 接收客户端发来的消息
    recvData = clientSocket.recv(1024).decode('utf-8')
    print(recvData)
    # 服务端向客户端发消息,作为响应
    responseLine = 'HTTP/1.1 200 OK' + os.linesep
    responseHeader = 'Server: laowang' + os.linesep
    responseHeader += 'Date: %s' % time.ctime() + os.linesep
    responseBody = '差一点一米八'
    sendData = (responseLine + responseHeader + os.linesep + responseBody).encode('gbk')

    clientSocket.send(sendData)
    # 关闭
    clientSocket.close()

def main():
    '程序入口'
    # socket对象
    serverSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 绑定的端口号，可以重复使用端口号
    #serverSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    # 绑定
    serverSocket.bind(('', 8000))
    # 监听
    serverSocket.listen()
    while True:
        # 接收
        clientSocket, clientAddr = serverSocket.accept()
        print(clientSocket)
        # 开一个新的进程，执行交互
        multiprocessing.Process(target=serverHandler, args=(clientSocket, clientAddr)).start()
        # 关闭客户端对象
        clientSocket.close()

if __name__ == '__main__':
    main()

import time,multiprocessing,socket,os,re

G_PATH = './html'

def serveHandler(clientSocket,clientAddr):
    recvData = clientSocket.recv(1024).decode('gbk')
    print(recvData)
    lineFirst = recvData.splitlines()[0]
    strFirst = re.split(r' +',lineFirst)
    fileName = strFirst[1]

    filePath = G_PATH
    if '/'== fileName:
        filePath += './index.html'
    else:
        filePath += fileName

    try:
        file = None
        file =open(filePath,'r',encoding='gbk')
        responseBody = file.read()

        responseLine = 'HTTP/1.1 200 OK' + os.linesep
        responseHeader = 'Server: ererbai' + os.linesep
        responseHeader += 'Date:%s' % time.ctime() + os.linesep
    except FileNotFoundError:
        responseLine = 'HTTP/1.1 404 NOT FOUND' + os.linesep
        responseHeader = 'Server: ererbai' + os.linesep
        responseHeader += 'Date:%s' % time.ctime() + os.linesep
        responseBody = '很抱歉，服务器中找不到你想要的内容'
    except Exception:
        responseLine = 'HTTP/1.1 500 ERROR' + os.linesep
        responseHeader = 'Server: ererbai' + os.linesep
        responseHeader += 'Date: %s' % time.ctime() + os.linesep
        responseBody = '服务器正在维护中，请稍后再试。'

    finally:
        if file!=None and not file.closed:
            file.close()

        senData = (responseLine + responseHeader + os.linesep + responseBody).encode('gbk')
        clientSocket.send(senData)
        clientSocket.close()


def main():
    serveSocket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    serveSocket.bind(('',8000))
    serveSocket.listen()
    while True:
        clientSocket,clientAddr = serveSocket.accept()
        print(clientSocket)
        multiprocessing.Process(target=serveHandler,args=(clientSocket,clientAddr)).start()
        clientSocket.close()

if __name__ == '__main__':
    main()