Bjorn A Mellem | bc3eebc | 2019-09-23 14:53:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include "pc/composite_data_channel_transport.h" |
| 12 | |
| 13 | #include <utility> |
| 14 | |
| 15 | #include "absl/algorithm/container.h" |
| 16 | |
| 17 | namespace webrtc { |
| 18 | |
| 19 | CompositeDataChannelTransport::CompositeDataChannelTransport( |
| 20 | std::vector<DataChannelTransportInterface*> transports) |
| 21 | : transports_(std::move(transports)) { |
| 22 | for (auto transport : transports_) { |
| 23 | transport->SetDataSink(this); |
| 24 | } |
| 25 | } |
| 26 | |
Bjorn A Mellem | fc604aa | 2019-09-24 14:59:21 -0700 | [diff] [blame] | 27 | CompositeDataChannelTransport::~CompositeDataChannelTransport() { |
| 28 | for (auto transport : transports_) { |
| 29 | transport->SetDataSink(nullptr); |
| 30 | } |
| 31 | } |
| 32 | |
Bjorn A Mellem | bc3eebc | 2019-09-23 14:53:54 -0700 | [diff] [blame] | 33 | void CompositeDataChannelTransport::SetSendTransport( |
| 34 | DataChannelTransportInterface* send_transport) { |
| 35 | if (!absl::c_linear_search(transports_, send_transport)) { |
| 36 | return; |
| 37 | } |
| 38 | send_transport_ = send_transport; |
| 39 | // NB: OnReadyToSend() checks if we're actually ready to send, and signals |
| 40 | // |sink_| if appropriate. This signal is required upon setting the sink. |
| 41 | OnReadyToSend(); |
| 42 | } |
| 43 | |
| 44 | void CompositeDataChannelTransport::RemoveTransport( |
| 45 | DataChannelTransportInterface* transport) { |
| 46 | RTC_DCHECK(transport != send_transport_) << "Cannot remove send transport"; |
| 47 | |
| 48 | auto it = absl::c_find(transports_, transport); |
| 49 | if (it == transports_.end()) { |
| 50 | return; |
| 51 | } |
| 52 | |
| 53 | transport->SetDataSink(nullptr); |
| 54 | transports_.erase(it); |
| 55 | } |
| 56 | |
| 57 | RTCError CompositeDataChannelTransport::OpenChannel(int channel_id) { |
| 58 | RTCError error = RTCError::OK(); |
| 59 | for (auto transport : transports_) { |
| 60 | RTCError e = transport->OpenChannel(channel_id); |
| 61 | if (!e.ok()) { |
| 62 | error = std::move(e); |
| 63 | } |
| 64 | } |
| 65 | return error; |
| 66 | } |
| 67 | |
| 68 | RTCError CompositeDataChannelTransport::SendData( |
| 69 | int channel_id, |
| 70 | const SendDataParams& params, |
| 71 | const rtc::CopyOnWriteBuffer& buffer) { |
| 72 | if (send_transport_) { |
| 73 | return send_transport_->SendData(channel_id, params, buffer); |
| 74 | } |
| 75 | return RTCError(RTCErrorType::NETWORK_ERROR, "Send transport is not ready"); |
| 76 | } |
| 77 | |
| 78 | RTCError CompositeDataChannelTransport::CloseChannel(int channel_id) { |
| 79 | if (send_transport_) { |
| 80 | return send_transport_->CloseChannel(channel_id); |
| 81 | } |
| 82 | return RTCError(RTCErrorType::NETWORK_ERROR, "Send transport is not ready"); |
| 83 | } |
| 84 | |
| 85 | void CompositeDataChannelTransport::SetDataSink(DataChannelSink* sink) { |
| 86 | sink_ = sink; |
| 87 | // NB: OnReadyToSend() checks if we're actually ready to send, and signals |
| 88 | // |sink_| if appropriate. This signal is required upon setting the sink. |
| 89 | OnReadyToSend(); |
| 90 | } |
| 91 | |
| 92 | bool CompositeDataChannelTransport::IsReadyToSend() const { |
| 93 | return send_transport_ && send_transport_->IsReadyToSend(); |
| 94 | } |
| 95 | |
| 96 | void CompositeDataChannelTransport::OnDataReceived( |
| 97 | int channel_id, |
| 98 | DataMessageType type, |
| 99 | const rtc::CopyOnWriteBuffer& buffer) { |
| 100 | if (sink_) { |
| 101 | sink_->OnDataReceived(channel_id, type, buffer); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | void CompositeDataChannelTransport::OnChannelClosing(int channel_id) { |
| 106 | if (sink_) { |
| 107 | sink_->OnChannelClosing(channel_id); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | void CompositeDataChannelTransport::OnChannelClosed(int channel_id) { |
| 112 | if (sink_) { |
| 113 | sink_->OnChannelClosed(channel_id); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | void CompositeDataChannelTransport::OnReadyToSend() { |
| 118 | if (sink_ && send_transport_ && send_transport_->IsReadyToSend()) { |
| 119 | sink_->OnReadyToSend(); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | } // namespace webrtc |