18.HTTP协议(二)

一.概念回顾

建议先学上篇博客,再向下学习,上篇博客的链接如下:

https://blog.youkuaiyun.com/weixin_60668256/article/details/154835397?fromshare=blogdetail&sharetype=blogdetail&sharerId=154835397&sharerefer=PC&sharesource=weixin_60668256&sharefrom=from_link

二.http请求与响应的格式

1.http请求

2.http响应

三.http协议定制

#pragma once


#include <iostream>
#include <string>
#include <vector>
#include <sstream>
#include "Common.hpp"



const std::string Sep = "\r\n";
const std::string LineSep = " ";
const std::string BlankLine = Sep;



class HttpRequest
{
public:
    HttpRequest()
    {}
    ~HttpRequest()
    {}
    void Deserialize(std::string& request_str)
    {
        std::cout << "#############################" << std::endl;
        std::cout << "解析之前 request_str: \n" << request_str;
        if(ParseOneLine(request_str,&_req_line,Sep))
        {
            //提取请求行内的详细字段
            ParseReqLine(_req_line,LineSep);
        }
        std::cout << "解析之后 request_str: \n" << request_str;
        Print();
        std::cout << "#############################" << std::endl;
    }
    void Print()
    {
        std::cout << "#############################" << std::endl;

        std::cout << "_method: " << _method << std::endl;
        std::cout << "_uri: " << _uri << std::endl;
        std::cout << "_version: " << _version << std::endl;
    }
private:
    void ParseReqLine(std::string& _req_line,const std::string sep)
    {
        std::stringstream ss(_req_line);
        ss >> _method >> _uri >> _version;
    }
private:
    std::string _req_line;
    std::vector<std::string> _req_header;
    std::string _blank_line;
    std::string _body;
    //反序列化的过程中,细化我们解析的字段
    std::string _method;
    std::string _uri;
    std::string _version;
};





class HttpResponse
{
private:
    std::string _resp_line;
    std::vector<std::string> _resp_header;
    std::string _blank_line;
    std::string _body;
};

1.Deserialize函数的实现

void Deserialize(std::string& request_str)
    {
        if(ParseOneLine(request_str,&_req_line,Sep))
        {
            //提取请求行内的详细字段
            ParseReqLine(_req_line,LineSep);
            ParseHeader(request_str);
            _body = request_str;
        }
    }

a.ParseOneLine(请求行的拆分)

//1.正常字符串
//2.true && 空
//3.false && 空
bool ParseOneLine(std::string& str,std::string* out,const std::string& sep)
{
    auto pos =