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/*
* Copyright (c) 2011 Tobias Markmann
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include <Swiften/FileTransfer/DefaultRemoteJingleTransportCandidateSelector.h>
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/bind.hpp>
#include <Swiften/Base/Log.h>
#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/Base/foreach.h>
#include <Swiften/Elements/JingleS5BTransportPayload.h>
#include <Swiften/Network/ConnectionFactory.h>
#include <Swiften/FileTransfer/SOCKS5BytestreamRegistry.h>
namespace Swift {
DefaultRemoteJingleTransportCandidateSelector::DefaultRemoteJingleTransportCandidateSelector(ConnectionFactory* connectionFactory, TimerFactory* timerFactory) : connectionFactory(connectionFactory), timerFactory(timerFactory) {
}
DefaultRemoteJingleTransportCandidateSelector::~DefaultRemoteJingleTransportCandidateSelector() {
}
void DefaultRemoteJingleTransportCandidateSelector::addRemoteTransportCandidates(JingleTransportPayload::ref transportPayload) {
JingleS5BTransportPayload::ref s5bPayload;
transportSID = transportPayload->getSessionID();
if ((s5bPayload = boost::dynamic_pointer_cast<JingleS5BTransportPayload>(transportPayload))) {
foreach(JingleS5BTransportPayload::Candidate c, s5bPayload->getCandidates()) {
candidates.push(c);
}
}
}
void DefaultRemoteJingleTransportCandidateSelector::selectCandidate() {
tryNextCandidate(true);
}
void DefaultRemoteJingleTransportCandidateSelector::tryNextCandidate(bool error) {
if (error) {
if (s5bSession) {
SWIFT_LOG(debug) << "failed to connect" << std::endl;
}
if (candidates.empty()) {
// failed to connect to any of the candidates
// issue an error
SWIFT_LOG(debug) << "out of candidates )=" << std::endl;
JingleS5BTransportPayload::ref failed = boost::make_shared<JingleS5BTransportPayload>();
failed->setCandidateError(true);
failed->setSessionID(transportSID);
onRemoteTransportCandidateSelectFinished(failed);
} else {
lastCandidate = candidates.top();
// only try direct or assisted for now
if (lastCandidate.type == JingleS5BTransportPayload::Candidate::DirectType ||
lastCandidate.type == JingleS5BTransportPayload::Candidate::AssistedType || lastCandidate.type == JingleS5BTransportPayload::Candidate::ProxyType ) {
// create connection
connection = connectionFactory->createConnection();
s5bSession = boost::make_shared<SOCKS5BytestreamClientSession>(connection, lastCandidate.hostPort, SOCKS5BytestreamRegistry::getHostname(transportSID, requester, target), timerFactory);
// bind onReady to this method
s5bSession->onSessionReady.connect(boost::bind(&DefaultRemoteJingleTransportCandidateSelector::tryNextCandidate, this, _1));
std::string candidateType;
if (lastCandidate.type == JingleS5BTransportPayload::Candidate::DirectType) {
candidateType = "direct";
} else if (lastCandidate.type == JingleS5BTransportPayload::Candidate::AssistedType) {
candidateType = "assisted";
} else if (lastCandidate.type == JingleS5BTransportPayload::Candidate::ProxyType) {
candidateType = "proxy";
}
// initiate connect
SWIFT_LOG(debug) << "try to connect to candidate of type " << candidateType << " : " << lastCandidate.hostPort.toString() << std::endl;
s5bSession->start();
// that's it. we're gonna be called back
candidates.pop();
} else {
s5bSession.reset();
candidates.pop();
tryNextCandidate(true);
}
}
} else {
// we have a working connection, hooray
JingleS5BTransportPayload::ref success = boost::make_shared<JingleS5BTransportPayload>();
success->setCandidateUsed(lastCandidate.cid);
success->setSessionID(transportSID);
onRemoteTransportCandidateSelectFinished(success);
}
}
void DefaultRemoteJingleTransportCandidateSelector::setMinimumPriority(int priority) {
SWIFT_LOG(debug) << "priority: " << priority << std::endl;
}
void DefaultRemoteJingleTransportCandidateSelector::setRequesterTarget(const JID& requester, const JID& target) {
this->requester = requester;
this->target = target;
}
SOCKS5BytestreamClientSession::ref DefaultRemoteJingleTransportCandidateSelector::getS5BSession() {
return s5bSession;
}
bool DefaultRemoteJingleTransportCandidateSelector::isActualCandidate(JingleTransportPayload::ref /* transportPayload */) {
return false;
}
int DefaultRemoteJingleTransportCandidateSelector::getPriority(JingleTransportPayload::ref /* transportPayload */) {
return 0;
}
JingleTransport::ref DefaultRemoteJingleTransportCandidateSelector::selectTransport(JingleTransportPayload::ref /* transportPayload */) {
return JingleTransport::ref();
}
}
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Swift