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httpsession.cpp
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268 lines (244 loc) · 8.86 KB
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// GET /register.do?p={%22username%22:%20%2213917043329%22,%20%22nickname%22:%20%22balloon%22,%20%22password%22:%20%22123%22} HTTP/1.1\r\n
// GET / HTTP/1.1
// Host: baidu.com
// Connection: keep-alive
// Upgrade-Insecure-Requests: 1
// User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
// Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
// Accept-Encoding: gzip, deflate, br
// Accept-Language: zh-CN,zh;q=0.9,en;q=0.8
// Cookie: _bdid_=059a16ee3bef488b9d5212c81e2b688d; Hm_lvt_c58f67ca105d070ca7563b4b14210980=1550223017; _ga=GA1.2.265126182.1550223018; _gid=GA1.2.1797252688.1550223018; Hm_lpvt_c58f67ca105d070ca7563b4b14210980=1550223213; _gat_gtag_UA_124915922_1=1
// HTTP/1.1 200 OK
// Server: nginx/1.13.12
// Date: Fri, 15 Feb 2019 09:57:21 GMT
// Content-Type: text/html; charset=utf-8
// Transfer-Encoding: chunked
// Connection: keep-alive
// Vary: Accept-Encoding
// Vary: Cookie
// X-Frame-Options: SAMEORIGIN
// Set-Cookie: __bqusername=""; Domain=.bigquant.com; expires=Thu, 01-Jan-1970 00:00:00 GMT; Max-Age=0; Path=/
// Access-Control-Allow-Origin: *
// Content-Encoding: gzip
// 200：请求被正常处理
// 204：请求被受理但没有资源可以返回
// 206：客户端只是请求资源的一部分，服务器只对请求的部分资源执行GET方法，相应报文中通过Content-Range指定范围的资源。
// 301：永久性重定向
// 302：临时重定向
// 303：与302状态码有相似功能，只是它希望客户端在请求一个URI的时候，能通过GET方法重定向到另一个URI上
// 304：发送附带条件的请求时，条件不满足时返回，与重定向无关
// 307：临时重定向，与302类似，只是强制要求使用POST方法
// 400：请求报文语法有误，服务器无法识别
// 401：请求需要认证
// 403：请求的对应资源禁止被访问
// 404：服务器无法找到对应资源
// 500：服务器内部错误
// 503：服务器正忙
#include "httpsession.h"
#include <iostream>
#include <stdio.h>
#include <string.h>
HttpSession::HttpSession()
: praseresult_(false),
keepalive_(true)
{
}
HttpSession::~HttpSession()
{
}
bool HttpSession::PraseHttpRequest(std::string &msg, HttpRequestContext &httprequestcontext)
{
//std::cout << "HttpServer::HttpParser" << std::endl;
std::string crlf("\r\n"), crlfcrlf("\r\n\r\n");
size_t prev = 0, next = 0, pos_colon;
std::string key, value;
bool praseresult = false;
//以下解析可以改成状态机，解决一次收Http报文不完整问题
//prase http request line
if ((next = msg.find(crlf, prev)) != std::string::npos)
{
std::string first_line(msg.substr(prev, next - prev));
prev = next;
std::stringstream sstream(first_line);
sstream >> (httprequestcontext.method);
sstream >> (httprequestcontext.url);
sstream >> (httprequestcontext.version);
}
else
{
std::cout << "msg" << msg << std::endl;
std::cout << "Error in httpPraser: http_request_line isn't complete!" << std::endl;
praseresult = false;
msg.clear();
return praseresult;
//可以临时存起来，凑齐了再解析
}
//prase http request header
size_t pos_crlfcrlf = 0;
if (( pos_crlfcrlf = msg.find(crlfcrlf, prev)) != std::string::npos)
{
while (prev != pos_crlfcrlf)
{
next = msg.find(crlf, prev + 2);
pos_colon = msg.find(":", prev + 2);
key = msg.substr(prev + 2, pos_colon - prev-2);
value = msg.substr(pos_colon + 2, next-pos_colon-2);
prev = next;
httprequestcontext.header.insert(std::pair<std::string, std::string>(key, value));
}
}
else
{
std::cout << "Error in httpPraser: http_request_header isn't complete!" << std::endl;
praseresult = false;
msg.clear();
return praseresult;
}
//prase http request body
httprequestcontext.body = msg.substr(pos_crlfcrlf + 4);
praseresult = true;
msg.clear();
return praseresult;
}
void HttpSession::HttpProcess(const HttpRequestContext &httprequestcontext, std::string &responsecontext)
{
//std::cout << "HttpServer::HttpProcess" << std::endl;
std::string responsebody;
std::string errormsg;
std::string path;
std::string querystring;
if("GET" == httprequestcontext.method)
{
;
}
else if("POST" == httprequestcontext.method)
{
;
}
else
{
std::cout << "HttpServer::HttpParser" << std::endl;
errormsg = "Method Not Implemented";
HttpError(501, "Method Not Implemented", httprequestcontext, responsecontext);
return;
}
size_t pos = httprequestcontext.url.find("?");
if(pos != std::string::npos)
{
path = httprequestcontext.url.substr(0, pos);
querystring = httprequestcontext.url.substr(pos+1);
}
else
{
path = httprequestcontext.url;
}
//keepalive判断处理
std::map<std::string, std::string>::const_iterator iter = httprequestcontext.header.find("Connection");
if(iter != httprequestcontext.header.end())
{
keepalive_ = (iter->second == "Keep-Alive");
}
else
{
if(httprequestcontext.version == "HTTP/1.1")
{
keepalive_ = true;//HTTP/1.1默认长连接
}
else
{
keepalive_ = false;//HTTP/1.0默认短连接
}
}
if("/" == path)
{
path = "/index.html";
}
else if("/hello" == path)
{
//Wenbbench 测试用
std::string filetype("text/html");
responsebody = ("hello world");
responsecontext += httprequestcontext.version + " 200 OK\r\n";
responsecontext += "Server: GuoJ's NetServer/0.1\r\n";
responsecontext += "Content-Type: " + filetype + "; charset=utf-8\r\n";
if(iter != httprequestcontext.header.end())
{
responsecontext += "Connection: " + iter->second + "\r\n";
}
responsecontext += "Content-Length: " + std::to_string(responsebody.size()) + "\r\n";
responsecontext += "\r\n";
responsecontext += responsebody;
return;
}
else
{
;
}
//std::string responsebody;
path.insert(0,".");
FILE* fp = NULL;
if((fp = fopen(path.c_str(), "rb")) == NULL)
{
//perror("error fopen");
//404 NOT FOUND
HttpError(404, "Not Found", httprequestcontext, responsecontext);
return;
}
else
{
char buffer[4096];
memset(buffer, 0, sizeof(buffer));
while(fread(buffer, sizeof(buffer), 1, fp) == 1)//可以mmap内存映射优化
{
responsebody.append(buffer);
memset(buffer, 0, sizeof(buffer));
}
if(feof(fp))
{
responsebody.append(buffer);
}
else
{
std::cout << "error fread" << std::endl;
}
fclose(fp);
}
std::string filetype("text/html"); //暂时固定为html
responsecontext += httprequestcontext.version + " 200 OK\r\n";
responsecontext += "Server: GuoJ's NetServer/0.1\r\n";
responsecontext += "Content-Type: " + filetype + "; charset=utf-8\r\n";
if(iter != httprequestcontext.header.end())
{
responsecontext += "Connection: " + iter->second + "\r\n";
}
responsecontext += "Content-Length: " + std::to_string(responsebody.size()) + "\r\n";
responsecontext += "\r\n";
responsecontext += responsebody;
}
void HttpSession::HttpError(const int err_num, const std::string short_msg, const HttpRequestContext &httprequestcontext, std::string &responsecontext)
{
//这里string创建销毁应该会耗时间
std::string responsebody;
responsebody += "<html><title>出错了</title>";
responsebody += "<head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"></head>";
responsebody += "<style>body{background-color:#f;font-size:14px;}h1{font-size:60px;color:#eeetext-align:center;padding-top:30px;font-weight:normal;}</style>";
responsebody += "<body bgcolor=\"ffffff\"><h1>";
responsebody += std::to_string(err_num) + " " + short_msg;
responsebody += "</h1><hr><em> GuoJ's NetServer</em>\n</body></html>";
std::string httpversion;
if(httprequestcontext.version.empty())
{
httpversion = "HTTP/1.1";
}
else
{
httpversion = httprequestcontext.version;
}
responsecontext += httpversion + " " + std::to_string(err_num) + " " + short_msg + "\r\n";
responsecontext += "Server: GuoJ's NetServer/0.1\r\n";
responsecontext += "Content-Type: text/html\r\n";
responsecontext += "Connection: Keep-Alive\r\n";
responsecontext += "Content-Length: " + std::to_string(responsebody.size()) + "\r\n";
responsecontext += "\r\n";
responsecontext += responsebody;
}