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Copy pathhttpserver.cpp
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201 lines (169 loc) · 7.2 KB
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#include <iostream>
#include <boost/bind.hpp>
#include <boost/thread.hpp>
#include "httpserver.h"
#include "socket.h"
#include "request_headers.h"
#include "request.h"
#include "response.h"
#include "exceptions.h"
#include "request_router.h"
rs::httpserver::HttpServer::HttpServer(const std::string& host, int port, int threads) :
host_(host), port_(port), threads_(threads), service_(),
acceptor_(service_), signals_(service_) {
signals_.add(SIGINT);
signals_.add(SIGTERM);
signals_.add(SIGQUIT);
signals_.async_wait(boost::bind(&HttpServer::HandleStop, this));
}
rs::httpserver::HttpServer::~HttpServer() {
}
void rs::httpserver::HttpServer::HandleStop() {
service_.stop();
}
void rs::httpserver::HttpServer::Start(const RequestRouter& router, RequestCallback requestCallback) {
Start(router, requestCallback, &HttpServer::DefaultRequestContinueCallback);
}
void rs::httpserver::HttpServer::Start(const RequestRouter& router, RequestCallback requestCallback, Request100ContinueCallback requestContinueCallback) {
Start([&](socket_ptr socket, request_ptr request, response_ptr response) {
if (!router.Match(request, response) && requestCallback) {
requestCallback(socket, request, response);
}
}, requestContinueCallback);
}
void rs::httpserver::HttpServer::Start(RequestCallback requestCallback) {
Start(requestCallback, &HttpServer::DefaultRequestContinueCallback);
}
void rs::httpserver::HttpServer::Start(RequestCallback requestCallback, Request100ContinueCallback request_continue_callback) {
auto addr = boost::asio::ip::address::from_string(host_);
boost::asio::ip::tcp::endpoint ep(addr, port_);
auto asio_socket = boost::make_shared<asio_socket_ptr::element_type>(service_);
auto socket = Socket::Create(shared_from_this(), asio_socket);
requestCallback_ = requestCallback;
requestContinueCallback_ = request_continue_callback;
acceptor_.open(ep.protocol());
acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor_.bind(ep);
acceptor_.listen();
StartAccept(std::move(socket));
boost::thread_group workers;
for (auto i = 0; i < threads_; ++i) {
workers.create_thread(boost::bind(&boost::asio::io_service::run, &service_));
}
workers.join_all();
}
void rs::httpserver::HttpServer::StartAccept(socket_ptr socket) {
acceptor_.async_accept(*socket->getAsioSocket(), boost::bind(&HttpServer::HandleAccept, this, socket, boost::asio::placeholders::error));
}
void rs::httpserver::HttpServer::HandleAccept(socket_ptr socket, const boost::system::error_code& error) {
if (error) {
// TODO: do something more useful with this
std::cerr << "ERROR (boost::system::error_code) " << error.message() << std::endl;
}
else {
auto new_asio_socket = boost::make_shared<asio_socket_ptr::element_type>(service_);
auto new_socket = Socket::Create(shared_from_this(), new_asio_socket);
StartAccept(std::move(new_socket));
HandleRequest(socket);
}
}
void rs::httpserver::HttpServer::HandleRequest(socket_ptr socket) {
#if !defined(__linux__)
socket->NoDelay(true);
#endif
Socket::ScopedClose close(socket);
HeaderBuffer headerBuffer(Config::MaxRequestHeaderSize);
auto requestCount = 0;
try {
while (socket->Connected()) {
auto headerReceiveTimeout = headerBuffer.getDataLength() > 0 ? Config::HeaderReceiveTimeoutPeriod : Config::KeepAliveTimeoutTotal;
auto responseBytes = headerBuffer.Receive(socket, headerReceiveTimeout);
if (responseBytes <= 0) {
throw HeaderTimeoutException(headerBuffer.getDataLength());
}
auto requestHeaders = RequestHeaders::Create(headerBuffer);
if (!!requestHeaders) {
++requestCount;
auto request = Request::Create(socket, requestHeaders, headerBuffer);
auto response = Response::Create(socket, request);
if (requestCount >= Config::MaxRequestCount) {
response->ForceClose();
}
auto requestContinue = true;
if (!request->IsHttp10() && (request->getMethod() == "PUT" || request->getMethod() == "POST") && requestHeaders->getExpect() == "100-continue") {
requestContinue = requestContinueCallback_(socket, request);
response->SendContinue(requestContinue);
}
if (requestContinue) {
requestCallback_(socket, request, response);
if (!response->HasResponded()) {
response->ResetHeaders().setStatusCode(404).setStatusDescription("Not found").Send();
}
}
headerBuffer.Reset();
if (response->ShouldClose()) {
socket->Close();
}
} else if (headerBuffer.IsFull()) {
throw HeaderSizeException();
}
}
} catch (const HeaderTimeoutException& e) {
if (e.receivedBytes_ > 0) {
SendRequestTimeout(socket);
std::cerr << "ERROR (HeaderTimeoutException): " << e.what() << std::endl;
}
} catch (const HeaderSizeException& e) {
SendBadRequest(socket);
std::cerr << "ERROR (HttpServerException): " << e.what() << std::endl;
} catch (const HeaderMalformedException& e) {
SendBadRequest(socket);
std::cerr << "ERROR (HttpServerException): " << e.what() << std::endl;
} catch (const HttpServerException& e) {
SendBadRequest(socket);
std::cerr << "ERROR (HttpServerException): " << e.what() << std::endl;
} catch (const std::exception& e) {
SendInternalServerError(socket);
std::cerr << "ERROR (std::exception): " << e.what() << std::endl;
} catch (...) {
SendInternalServerError(socket);
std::cerr << "ERROR: something bad happened!" << std::endl;
throw;
}
}
bool rs::httpserver::HttpServer::DefaultRequestContinueCallback(socket_ptr, request_ptr) {
return true;
}
void rs::httpserver::HttpServer::SendRequestTimeout(socket_ptr socket) {
try {
if (!!socket && socket->Connected()) {
socket->Send("HTTP/1.1 408 Request Timeout\r\nConnection: close\r\n\r\n");
socket->Close();
}
}
catch (const std::exception&) {
;
}
}
void rs::httpserver::HttpServer::SendBadRequest(socket_ptr socket) {
try {
if (!!socket && socket->Connected()) {
socket->Send("HTTP/1.1 400 Bad Request\r\nConnection: close\r\n\r\n");
socket->Close();
}
}
catch (const std::exception&) {
;
}
}
void rs::httpserver::HttpServer::SendInternalServerError(socket_ptr socket) {
try {
if (!!socket && socket->Connected()) {
socket->Send("HTTP/1.1 500 Internal Server Error\r\nConnection: close\r\n\r\n");
socket->Close();
}
}
catch (const std::exception&) {
;
}
}