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121 lines
3.7 KiB
121 lines
3.7 KiB
/*
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* Copyright 2019 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "pc/sctp_data_channel_transport.h"
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#include "pc/sctp_utils.h"
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namespace webrtc {
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SctpDataChannelTransport::SctpDataChannelTransport(
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cricket::SctpTransportInternal* sctp_transport)
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: sctp_transport_(sctp_transport) {
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sctp_transport_->SignalReadyToSendData.connect(
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this, &SctpDataChannelTransport::OnReadyToSendData);
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sctp_transport_->SignalDataReceived.connect(
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this, &SctpDataChannelTransport::OnDataReceived);
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sctp_transport_->SignalClosingProcedureStartedRemotely.connect(
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this, &SctpDataChannelTransport::OnClosingProcedureStartedRemotely);
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sctp_transport_->SignalClosingProcedureComplete.connect(
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this, &SctpDataChannelTransport::OnClosingProcedureComplete);
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sctp_transport_->SignalClosedAbruptly.connect(
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this, &SctpDataChannelTransport::OnClosedAbruptly);
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}
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RTCError SctpDataChannelTransport::OpenChannel(int channel_id) {
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sctp_transport_->OpenStream(channel_id);
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return RTCError::OK();
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}
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RTCError SctpDataChannelTransport::SendData(
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int channel_id,
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const SendDataParams& params,
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const rtc::CopyOnWriteBuffer& buffer) {
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// Map webrtc::SendDataParams to cricket::SendDataParams.
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// TODO(mellem): See about unifying these structs.
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cricket::SendDataParams sd_params;
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sd_params.sid = channel_id;
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sd_params.type = ToCricketDataMessageType(params.type);
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sd_params.ordered = params.ordered;
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sd_params.reliable = !(params.max_rtx_count || params.max_rtx_ms);
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sd_params.max_rtx_count = params.max_rtx_count.value_or(-1);
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sd_params.max_rtx_ms = params.max_rtx_ms.value_or(-1);
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cricket::SendDataResult result;
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sctp_transport_->SendData(sd_params, buffer, &result);
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// TODO(mellem): See about changing the interfaces to not require mapping
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// SendDataResult to RTCError and back again.
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switch (result) {
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case cricket::SendDataResult::SDR_SUCCESS:
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return RTCError::OK();
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case cricket::SendDataResult::SDR_BLOCK: {
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// Send buffer is full.
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ready_to_send_ = false;
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return RTCError(RTCErrorType::RESOURCE_EXHAUSTED);
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}
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case cricket::SendDataResult::SDR_ERROR:
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return RTCError(RTCErrorType::NETWORK_ERROR);
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}
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return RTCError(RTCErrorType::NETWORK_ERROR);
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}
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RTCError SctpDataChannelTransport::CloseChannel(int channel_id) {
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sctp_transport_->ResetStream(channel_id);
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return RTCError::OK();
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}
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void SctpDataChannelTransport::SetDataSink(DataChannelSink* sink) {
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sink_ = sink;
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if (sink_ && ready_to_send_) {
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sink_->OnReadyToSend();
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}
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}
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bool SctpDataChannelTransport::IsReadyToSend() const {
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return ready_to_send_;
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}
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void SctpDataChannelTransport::OnReadyToSendData() {
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ready_to_send_ = true;
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if (sink_) {
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sink_->OnReadyToSend();
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}
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}
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void SctpDataChannelTransport::OnDataReceived(
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const cricket::ReceiveDataParams& params,
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const rtc::CopyOnWriteBuffer& buffer) {
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if (sink_) {
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sink_->OnDataReceived(params.sid, ToWebrtcDataMessageType(params.type),
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buffer);
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}
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}
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void SctpDataChannelTransport::OnClosingProcedureStartedRemotely(
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int channel_id) {
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if (sink_) {
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sink_->OnChannelClosing(channel_id);
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}
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}
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void SctpDataChannelTransport::OnClosingProcedureComplete(int channel_id) {
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if (sink_) {
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sink_->OnChannelClosed(channel_id);
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}
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}
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void SctpDataChannelTransport::OnClosedAbruptly() {
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if (sink_) {
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sink_->OnTransportClosed();
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}
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}
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} // namespace webrtc
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