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/*
* Copyright (c) 2010-2018 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/Network/BoostConnectionServer.h>
#include <boost/asio/ip/v6_only.hpp>
#include <boost/asio/placeholders.hpp>
#include <boost/bind.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/optional.hpp>
#include <boost/system/error_code.hpp>
#include <boost/system/system_error.hpp>
#include <Swiften/Base/Log.h>
#include <Swiften/EventLoop/EventLoop.h>
namespace Swift {
BoostConnectionServer::BoostConnectionServer(unsigned short port, std::shared_ptr<boost::asio::io_service> ioService, EventLoop* eventLoop) : port_(port), ioService_(ioService), eventLoop(eventLoop), acceptor_(nullptr) {
}
BoostConnectionServer::BoostConnectionServer(const HostAddress &address, unsigned short port, std::shared_ptr<boost::asio::io_service> ioService, EventLoop* eventLoop) : address_(address), port_(port), ioService_(ioService), eventLoop(eventLoop), acceptor_(nullptr) {
}
void BoostConnectionServer::start() {
boost::optional<Error> error = tryStart();
if (error) {
eventLoop->postEvent(boost::bind(boost::ref(onStopped), *error), shared_from_this());
}
}
boost::optional<BoostConnectionServer::Error> BoostConnectionServer::tryStart() {
try {
assert(!acceptor_);
boost::asio::ip::tcp::endpoint endpoint;
if (address_.isValid()) {
endpoint = boost::asio::ip::tcp::endpoint(address_.getRawAddress(), port_);
}
else {
endpoint = boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v6(), port_);
}
acceptor_ = new boost::asio::ip::tcp::acceptor(*ioService_, endpoint);
if (endpoint.protocol() == boost::asio::ip::tcp::v6()) {
boost::system::error_code ec;
acceptor_->set_option(boost::asio::ip::v6_only(false), ec);
SWIFT_LOG_ASSERT(ec, warning) << "IPv4/IPv6 dual-stack support is not supported on this platform." << std::endl;
}
acceptNextConnection();
}
catch (const boost::system::system_error& e) {
if (e.code() == boost::asio::error::address_in_use) {
return Conflict;
}
else {
return UnknownError;
}
}
catch (const boost::numeric::bad_numeric_cast&) {
return UnknownError;
}
return boost::optional<Error>();
}
void BoostConnectionServer::stop() {
stop(boost::optional<Error>());
}
void BoostConnectionServer::stop(boost::optional<Error> e) {
if (acceptor_) {
acceptor_->close();
delete acceptor_;
acceptor_ = nullptr;
}
eventLoop->postEvent(boost::bind(boost::ref(onStopped), e), shared_from_this());
}
void BoostConnectionServer::acceptNextConnection() {
BoostConnection::ref newConnection(BoostConnection::create(ioService_, eventLoop));
acceptor_->async_accept(newConnection->getSocket(),
boost::bind(&BoostConnectionServer::handleAccept, shared_from_this(), newConnection, boost::asio::placeholders::error));
}
void BoostConnectionServer::handleAccept(std::shared_ptr<BoostConnection> newConnection, const boost::system::error_code& error) {
if (error) {
eventLoop->postEvent(
boost::bind(
&BoostConnectionServer::stop, shared_from_this(), UnknownError),
shared_from_this());
}
else {
eventLoop->postEvent(
boost::bind(boost::ref(onNewConnection), newConnection),
shared_from_this());
newConnection->listen();
acceptNextConnection();
}
}
HostAddressPort BoostConnectionServer::getAddressPort() const {
if (acceptor_) {
return HostAddressPort(acceptor_->local_endpoint());
}
else {
return HostAddressPort();
}
}
}
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Swift