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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "talk/p2p/base/transportchannelproxy.h"
     29 #include "talk/base/common.h"
     30 #include "talk/p2p/base/transport.h"
     31 #include "talk/p2p/base/transportchannelimpl.h"
     32 
     33 namespace cricket {
     34 
     35 TransportChannelProxy::TransportChannelProxy(const std::string& name,
     36                                              const std::string &content_type)
     37     : TransportChannel(name, content_type), impl_(NULL) {
     38 }
     39 
     40 TransportChannelProxy::~TransportChannelProxy() {
     41   if (impl_)
     42     impl_->GetTransport()->DestroyChannel(impl_->name());
     43 }
     44 
     45 void TransportChannelProxy::SetImplementation(TransportChannelImpl* impl) {
     46   impl_ = impl;
     47   impl_->SignalReadableState.connect(
     48       this, &TransportChannelProxy::OnReadableState);
     49   impl_->SignalWritableState.connect(
     50       this, &TransportChannelProxy::OnWritableState);
     51   impl_->SignalReadPacket.connect(this, &TransportChannelProxy::OnReadPacket);
     52   impl_->SignalRouteChange.connect(this, &TransportChannelProxy::OnRouteChange);
     53   for (OptionList::iterator it = pending_options_.begin();
     54        it != pending_options_.end();
     55        ++it) {
     56     impl_->SetOption(it->first, it->second);
     57   }
     58   pending_options_.clear();
     59 }
     60 
     61 int TransportChannelProxy::SendPacket(const char *data, size_t len) {
     62   // Fail if we don't have an impl yet.
     63   return (impl_) ? impl_->SendPacket(data, len) : -1;
     64 }
     65 
     66 int TransportChannelProxy::SetOption(talk_base::Socket::Option opt, int value) {
     67   if (impl_)
     68     return impl_->SetOption(opt, value);
     69   pending_options_.push_back(OptionPair(opt, value));
     70   return 0;
     71 }
     72 
     73 int TransportChannelProxy::GetError() {
     74   ASSERT(impl_ != NULL);  // should not be used until channel is writable
     75   return impl_->GetError();
     76 }
     77 
     78 P2PTransportChannel* TransportChannelProxy::GetP2PChannel() {
     79   if (impl_) {
     80       return impl_->GetP2PChannel();
     81   }
     82   return NULL;
     83 }
     84 
     85 void TransportChannelProxy::OnReadableState(TransportChannel* channel) {
     86   ASSERT(channel == impl_);
     87   set_readable(impl_->readable());
     88 }
     89 
     90 void TransportChannelProxy::OnWritableState(TransportChannel* channel) {
     91   ASSERT(channel == impl_);
     92   set_writable(impl_->writable());
     93 }
     94 
     95 void TransportChannelProxy::OnReadPacket(TransportChannel* channel,
     96                                          const char* data, size_t size) {
     97   ASSERT(channel == impl_);
     98   SignalReadPacket(this, data, size);
     99 }
    100 
    101 void TransportChannelProxy::OnRouteChange(TransportChannel* channel,
    102                                           const talk_base::SocketAddress& address) {
    103   ASSERT(channel == impl_);
    104   SignalRouteChange(this, address);
    105 }
    106 
    107 }  // namespace cricket
    108