blob: 318d133a0413b0405a528a2dbd0d89c934451106 [file] [log] [blame]
/*
* 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/transportchannelproxy.h"
#include "talk/base/common.h"
#include "talk/base/logging.h"
#include "talk/base/thread.h"
#include "talk/p2p/base/transport.h"
#include "talk/p2p/base/transportchannelimpl.h"
namespace cricket {
enum {
MSG_UPDATESTATE,
};
TransportChannelProxy::TransportChannelProxy(const std::string& content_name,
const std::string& name,
int component)
: TransportChannel(content_name, component),
name_(name),
impl_(NULL) {
worker_thread_ = talk_base::Thread::Current();
}
TransportChannelProxy::~TransportChannelProxy() {
// Clearing any pending signal.
worker_thread_->Clear(this);
if (impl_)
impl_->GetTransport()->DestroyChannel(impl_->component());
}
void TransportChannelProxy::SetImplementation(TransportChannelImpl* impl) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (impl == impl_) {
ASSERT(false);
// Ignore if the |impl| has already been set.
LOG(LS_WARNING) << "Ignored TransportChannelProxy::SetImplementation call "
<< "with a same impl as the existing one.";
return;
}
// Destroy any existing impl_.
if (impl_) {
impl_->GetTransport()->DestroyChannel(impl_->component());
}
// Adopt the supplied impl, and connect to its signals.
impl_ = impl;
if (impl_) {
impl_->SignalReadableState.connect(
this, &TransportChannelProxy::OnReadableState);
impl_->SignalWritableState.connect(
this, &TransportChannelProxy::OnWritableState);
impl_->SignalReadPacket.connect(
this, &TransportChannelProxy::OnReadPacket);
impl_->SignalReadyToSend.connect(
this, &TransportChannelProxy::OnReadyToSend);
impl_->SignalRouteChange.connect(
this, &TransportChannelProxy::OnRouteChange);
for (OptionList::iterator it = pending_options_.begin();
it != pending_options_.end();
++it) {
impl_->SetOption(it->first, it->second);
}
// Push down the SRTP ciphers, if any were set.
if (!pending_srtp_ciphers_.empty()) {
impl_->SetSrtpCiphers(pending_srtp_ciphers_);
}
pending_options_.clear();
}
// Post ourselves a message to see if we need to fire state callbacks.
worker_thread_->Post(this, MSG_UPDATESTATE);
}
int TransportChannelProxy::SendPacket(const char* data, size_t len,
talk_base::DiffServCodePoint dscp,
int flags) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
// Fail if we don't have an impl yet.
if (!impl_) {
return -1;
}
return impl_->SendPacket(data, len, dscp, flags);
}
int TransportChannelProxy::SetOption(talk_base::Socket::Option opt, int value) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
pending_options_.push_back(OptionPair(opt, value));
return 0;
}
return impl_->SetOption(opt, value);
}
int TransportChannelProxy::GetError() {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return 0;
}
return impl_->GetError();
}
bool TransportChannelProxy::GetStats(ConnectionInfos* infos) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->GetStats(infos);
}
bool TransportChannelProxy::IsDtlsActive() const {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->IsDtlsActive();
}
bool TransportChannelProxy::GetSslRole(talk_base::SSLRole* role) const {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->GetSslRole(role);
}
bool TransportChannelProxy::SetSslRole(talk_base::SSLRole role) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->SetSslRole(role);
}
bool TransportChannelProxy::SetSrtpCiphers(const std::vector<std::string>&
ciphers) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
pending_srtp_ciphers_ = ciphers; // Cache so we can send later, but always
// set so it stays consistent.
if (impl_) {
return impl_->SetSrtpCiphers(ciphers);
}
return true;
}
bool TransportChannelProxy::GetSrtpCipher(std::string* cipher) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->GetSrtpCipher(cipher);
}
bool TransportChannelProxy::ExportKeyingMaterial(const std::string& label,
const uint8* context,
size_t context_len,
bool use_context,
uint8* result,
size_t result_len) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return false;
}
return impl_->ExportKeyingMaterial(label, context, context_len, use_context,
result, result_len);
}
IceRole TransportChannelProxy::GetIceRole() const {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (!impl_) {
return ICEROLE_UNKNOWN;
}
return impl_->GetIceRole();
}
void TransportChannelProxy::OnReadableState(TransportChannel* channel) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
ASSERT(channel == impl_);
set_readable(impl_->readable());
// Note: SignalReadableState fired by set_readable.
}
void TransportChannelProxy::OnWritableState(TransportChannel* channel) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
ASSERT(channel == impl_);
set_writable(impl_->writable());
// Note: SignalWritableState fired by set_readable.
}
void TransportChannelProxy::OnReadPacket(TransportChannel* channel,
const char* data, size_t size,
int flags) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
ASSERT(channel == impl_);
SignalReadPacket(this, data, size, flags);
}
void TransportChannelProxy::OnReadyToSend(TransportChannel* channel) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
ASSERT(channel == impl_);
SignalReadyToSend(this);
}
void TransportChannelProxy::OnRouteChange(TransportChannel* channel,
const Candidate& candidate) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
ASSERT(channel == impl_);
SignalRouteChange(this, candidate);
}
void TransportChannelProxy::OnMessage(talk_base::Message* msg) {
ASSERT(talk_base::Thread::Current() == worker_thread_);
if (msg->message_id == MSG_UPDATESTATE) {
// If impl_ is already readable or writable, push up those signals.
set_readable(impl_ ? impl_->readable() : false);
set_writable(impl_ ? impl_->writable() : false);
}
}
} // namespace cricket