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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/p2p/base/portallocator.h"
#include "talk/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 : "") {
}
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
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