media/mtransport/transportlayerice.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 // Original author: ekr@rtfm.com
   8
   9 // Some of this code is cut-and-pasted from nICEr. Copyright is:
  10
  11 /*
  12 Copyright (c) 2007, Adobe Systems, Incorporated
  13 All rights reserved.
  14
  15 Redistribution and use in source and binary forms, with or without
  16 modification, are permitted provided that the following conditions are
  17 met:
  18
  19 * Redistributions of source code must retain the above copyright
  20   notice, this list of conditions and the following disclaimer.
  21
  22 * Redistributions in binary form must reproduce the above copyright
  23   notice, this list of conditions and the following disclaimer in the
  24   documentation and/or other materials provided with the distribution.
  25
  26 * Neither the name of Adobe Systems, Network Resonance nor the names of its
  27   contributors may be used to endorse or promote products derived from
  28   this software without specific prior written permission.
  29
  30 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  31 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  32 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  33 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  34 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  35 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  36 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  37 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  38 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  39 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  40 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  41 */
  42
  43
  44 #include <string>
  45 #include <vector>
  46
  47 #include "nsCOMPtr.h"
  48 #include "nsComponentManagerUtils.h"
  49 #include "nsError.h"
  50 #include "nsIEventTarget.h"
  51 #include "nsNetCID.h"
  52 #include "nsComponentManagerUtils.h"
  53 #include "nsServiceManagerUtils.h"
  54
  55 // nICEr includes
  56 extern "C" {
  57 #include "nr_api.h"
  58 #include "registry.h"
  59 #include "async_timer.h"
  60 #include "ice_util.h"
  61 #include "transport_addr.h"
  62 #include "nr_crypto.h"
  63 #include "nr_socket.h"
  64 #include "nr_socket_local.h"
  65 #include "stun_client_ctx.h"
  66 #include "stun_server_ctx.h"
  67 #include "ice_ctx.h"
  68 #include "ice_candidate.h"
  69 #include "ice_handler.h"
  70 }
  71
  72 // Local includes
  73 #include "logging.h"
  74 #include "nricectx.h"
  75 #include "nricemediastream.h"
  76 #include "transportflow.h"
  77 #include "transportlayerice.h"
  78
  79 namespace mozilla {
  80
  81 #ifdef ERROR
  82 #undef ERROR
  83 #endif
  84
  85 MOZ_MTLOG_MODULE("mtransport")
  86
  87 TransportLayerIce::TransportLayerIce(const std::string& name)
  88     : name_(name), ctx_(nullptr), stream_(nullptr), component_(0) {}
  89
  90 TransportLayerIce::~TransportLayerIce() {
  91   // No need to do anything here, since we use smart pointers
  92 }
  93
  94 void TransportLayerIce::SetParameters(RefPtr<NrIceCtx> ctx,
  95                                       RefPtr<NrIceMediaStream> stream,
  96                                       int component) {
  97   ctx_ = ctx;
  98   stream_ = stream;
  99   component_ = component;
 100
 101   PostSetup();
 102 }
 103
 104 void TransportLayerIce::PostSetup() {
 105   target_ = ctx_->thread();
 106
 107   stream_->SignalReady.connect(this, &TransportLayerIce::IceReady);
 108   stream_->SignalFailed.connect(this, &TransportLayerIce::IceFailed);
 109   stream_->SignalPacketReceived.connect(this,
 110                                         &TransportLayerIce::IcePacketReceived);
 111   if (stream_->state() == NrIceMediaStream::ICE_OPEN) {
 112     TL_SET_STATE(TS_OPEN);
 113   }
 114 }
 115
 116 TransportResult TransportLayerIce::SendPacket(const unsigned char *data,
 117                                               size_t len) {
 118   CheckThread();
 119   nsresult res = stream_->SendPacket(component_, data, len);
 120
 121   if (!NS_SUCCEEDED(res)) {
 122     return (res == NS_BASE_STREAM_WOULD_BLOCK) ?
 123         TE_WOULDBLOCK : TE_ERROR;
 124   }
 125
 126   MOZ_MTLOG(ML_DEBUG, LAYER_INFO << " SendPacket(" << len << ") succeeded");
 127
 128   return len;
 129 }
 130
 131
 132 void TransportLayerIce::IceCandidate(NrIceMediaStream *stream,
 133                                      const std::string&) {
 134   // NO-OP for now
 135 }
 136
 137 void TransportLayerIce::IceReady(NrIceMediaStream *stream) {
 138   CheckThread();
 139   TL_SET_STATE(TS_OPEN);
 140 }
 141
 142 void TransportLayerIce::IceFailed(NrIceMediaStream *stream) {
 143   CheckThread();
 144   TL_SET_STATE(TS_ERROR);
 145 }
 146
 147 void TransportLayerIce::IcePacketReceived(NrIceMediaStream *stream, int component,
 148                        const unsigned char *data, int len) {
 149   CheckThread();
 150   // We get packets for both components, so ignore the ones that aren't
 151   // for us.
 152   if (component_ != component)
 153     return;
 154
 155   MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "PacketReceived(" << stream->name() << ","
 156     << component << "," << len << ")");
 157   SignalPacketReceived(this, data, len);
 158 }
 159
 160 }  // close namespace