blob: 5ac58ea9de3f0e1381be9efc81ca3b083fc04147 [file] [log] [blame]
/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/p2p/base/portallocator.h"
#include "webrtc/p2p/base/portallocatorsessionproxy.h"
namespace cricket {
PortAllocatorSession::PortAllocatorSession(const std::string& content_name,
int component,
const std::string& ice_ufrag,
const std::string& ice_pwd,
uint32 flags)
: content_name_(content_name),
component_(component),
flags_(flags),
generation_(0),
// If PORTALLOCATOR_ENABLE_SHARED_UFRAG flag is not enabled, ignore the
// incoming ufrag and pwd, which will cause each Port to generate one
// by itself.
username_(flags_ & PORTALLOCATOR_ENABLE_SHARED_UFRAG ? ice_ufrag : ""),
password_(flags_ & PORTALLOCATOR_ENABLE_SHARED_UFRAG ? ice_pwd : "") {
// If bundle is enabled, shared ufrag must be enabled too.
ASSERT((!(flags_ & PORTALLOCATOR_ENABLE_BUNDLE)) ||
(flags_ & PORTALLOCATOR_ENABLE_SHARED_UFRAG));
}
PortAllocator::~PortAllocator() {
for (SessionMuxerMap::iterator iter = muxers_.begin();
iter != muxers_.end(); ++iter) {
delete iter->second;
}
}
PortAllocatorSession* PortAllocator::CreateSession(
const std::string& sid,
const std::string& content_name,
int component,
const std::string& ice_ufrag,
const std::string& ice_pwd) {
if (flags_ & PORTALLOCATOR_ENABLE_BUNDLE) {
// If we just use |sid| as key in identifying PortAllocatorSessionMuxer,
// ICE restart will not result in different candidates, as |sid| will
// be same. To yield different candiates we are using combination of
// |ice_ufrag| and |ice_pwd|.
// Ideally |ice_ufrag| and |ice_pwd| should change together, but
// there can be instances where only ice_pwd will be changed.
std::string key_str = ice_ufrag + ":" + ice_pwd;
PortAllocatorSessionMuxer* muxer = GetSessionMuxer(key_str);
if (!muxer) {
PortAllocatorSession* session_impl = CreateSessionInternal(
content_name, component, ice_ufrag, ice_pwd);
// Create PortAllocatorSessionMuxer object for |session_impl|.
muxer = new PortAllocatorSessionMuxer(session_impl);
muxer->SignalDestroyed.connect(
this, &PortAllocator::OnSessionMuxerDestroyed);
// Add PortAllocatorSession to the map.
muxers_[key_str] = muxer;
}
PortAllocatorSessionProxy* proxy =
new PortAllocatorSessionProxy(content_name, component, flags_);
muxer->RegisterSessionProxy(proxy);
return proxy;
}
return CreateSessionInternal(content_name, component, ice_ufrag, ice_pwd);
}
PortAllocatorSessionMuxer* PortAllocator::GetSessionMuxer(
const std::string& key) const {
SessionMuxerMap::const_iterator iter = muxers_.find(key);
if (iter != muxers_.end())
return iter->second;
return NULL;
}
void PortAllocator::OnSessionMuxerDestroyed(
PortAllocatorSessionMuxer* session) {
SessionMuxerMap::iterator iter;
for (iter = muxers_.begin(); iter != muxers_.end(); ++iter) {
if (iter->second == session)
break;
}
if (iter != muxers_.end())
muxers_.erase(iter);
}
} // namespace cricket