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httprequest.cpp
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httprequest.cpp
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#include "httprequest.h"
#include "httpresponse.h"
#include <algorithm>
#include <sstream>
#include <iostream>
#include <fstream>
#include <cctype>
using namespace web;
static std::map<int, std::string> responseCodes = std::map<int, std::string>({
{ 100, "Continue" },
{ 101, "Switching Protocols" },
{ 200, "OK" },
{ 201, "Created" },
{ 202, "Accepted" },
{ 203, "Non-Authoritative Information" },
{ 204, "No Content" },
{ 205, "Reset Content" },
{ 206, "Partial Content" },
{ 300, "Multiple Choices" },
{ 301, "Moved Permanently" },
{ 302, "Found" },
{ 303, "See Other" },
{ 304, "Not Modified" },
{ 305, "Use Proxy" },
{ 306, "(Unused)" },
{ 307, "Temporary Redirect" },
{ 400, "Bad Request" },
{ 401, "Unauthorized" },
{ 402, "Payment Required" },
{ 403, "Forbidden" },
{ 404, "Not Found" },
{ 405, "Method Not Allowed" },
{ 406, "Not Acceptable" },
{ 407, "Proxy Authentication Required" },
{ 408, "Request Timeout" },
{ 409, "Conflict" },
{ 410, "Gone" },
{ 411, "Length Required" },
{ 412, "Precondition Failed" },
{ 413, "Request Entity Too Large" },
{ 414, "Request-URI Too Long" },
{ 415, "Unsupported Media Type" },
{ 416, "Requested Range Not Satisfiable" },
{ 417, "Expectation Failed" },
{ 500, "Internal Server Error" },
{ 501, "Not Implemented" },
{ 502, "Bad Gateway" },
{ 503, "Service Unavailable" },
{ 504, "Gateway Timeout" },
{ 505, "HTTP Version Not Supported" }
});
// trim from start
static inline std::string <rim(std::string &s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(),
std::not1(std::ptr_fun<int, int>(std::isspace))));
return s;
}
// trim from end
static inline std::string &rtrim(std::string &s) {
s.erase(std::find_if(s.rbegin(), s.rend(),
std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end());
return s;
}
// trim from both ends
static inline std::string &trim(std::string &s) {
return ltrim(rtrim(s));
}
Request::Request(SOCKET socket, sockaddr_in clientInfo)
: _socket(socket), _clientInfo(clientInfo)
{
std::string allData = getMessage();
auto pos = allData.find("\r\n\r\n");
if (pos != std::string::npos)
{
std::stringstream ss;
ss.str(allData.substr(0, pos));
std::string line;
// Determine methode, uri and HTTP version
if (std::getline(ss, line))
{
trim(line);
auto first = line.find_first_of(' ');
auto last = line.find_last_of(' ');
if (first != std::string::npos && last != std::string::npos)
{
auto version = line.substr(last);
if (trim(version) != "HTTP/1.1") throw new std::runtime_error("invalid HTTP version");
auto method = line.substr(0, first);
this->_method = trim(method);
auto uri = line.substr(first, last-first);
this->_uri = trim(uri);
}
}
// Determine headers
while (std::getline(ss, line))
{
auto pos = line.find_first_of(':');
if (pos != std::string::npos)
{
auto key = line.substr(0, pos);
auto value = line.substr(pos + 1);
this->_headers.insert(std::make_pair(trim(key), trim(value)));
}
}
// And finally determine payload(if any)
this->_payload = allData.substr(pos + 4);
}
}
std::string Request::getMessage()
{
char buffer[BUFFER_SIZE+1];
int bytes;
bytes = recv(this->_socket, buffer, BUFFER_SIZE, 0);
buffer[bytes] = '\0';
std::string browserData = buffer;
while (BUFFER_SIZE == bytes)
{
bytes = recv(this->_socket, buffer, BUFFER_SIZE, 0);
buffer[bytes] = '\0';
browserData += buffer;
}
return browserData;
}
#define STREAMING_TRESHOLD 1024
// The function we want to execute on the new thread.
void Request::handleRequest(std::function<int (const Request&, Response &)> onConnection, Request request)
{
if (request._method == "")
{
// This is no HTTP request
shutdown(request._socket, SD_BOTH);
closesocket(request._socket);
return;
}
Response response;
int responseCode = onConnection(request, response);
std::stringstream headers;
headers << "HTTP/1.1 " << responseCode << " " << responseCodes[responseCode] << "\r\n";
for (auto pair : response._headers)
{
headers << pair.first << ": " << pair.second << "\r\n";
}
headers << "Content-Length: " << response._response.size() << "\r\n"
<< "\r\n";
send(request._socket, headers.str().c_str(), headers.str().size(), 0);
send(request._socket, response._response.c_str(), response._response.size(), 0);
shutdown(request._socket, SD_BOTH);
closesocket(request._socket);
}
std::string Request::ipAddress() const
{
return std::string(inet_ntoa(this->_clientInfo.sin_addr));
}