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/*
* Copyright 2013 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef PC_TEST_FAKE_DATA_CHANNEL_PROVIDER_H_
#define PC_TEST_FAKE_DATA_CHANNEL_PROVIDER_H_
#include <set>
#include "pc/sctp_data_channel.h"
#include "rtc_base/checks.h"
class FakeDataChannelProvider
: public webrtc::SctpDataChannelProviderInterface {
public:
FakeDataChannelProvider()
: send_blocked_(false),
transport_available_(false),
ready_to_send_(false),
transport_error_(false) {}
virtual ~FakeDataChannelProvider() {}
bool SendData(int sid,
const webrtc::SendDataParams& params,
const rtc::CopyOnWriteBuffer& payload,
cricket::SendDataResult* result) override {
RTC_CHECK(ready_to_send_);
RTC_CHECK(transport_available_);
if (send_blocked_) {
*result = cricket::SDR_BLOCK;
return false;
}
if (transport_error_) {
*result = cricket::SDR_ERROR;
return false;
}
last_sid_ = sid;
last_send_data_params_ = params;
return true;
}
bool ConnectDataChannel(webrtc::SctpDataChannel* data_channel) override {
RTC_CHECK(connected_channels_.find(data_channel) ==
connected_channels_.end());
if (!transport_available_) {
return false;
}
RTC_LOG(LS_INFO) << "DataChannel connected " << data_channel;
connected_channels_.insert(data_channel);
return true;
}
void DisconnectDataChannel(webrtc::SctpDataChannel* data_channel) override {
RTC_CHECK(connected_channels_.find(data_channel) !=
connected_channels_.end());
RTC_LOG(LS_INFO) << "DataChannel disconnected " << data_channel;
connected_channels_.erase(data_channel);
}
void AddSctpDataStream(int sid) override {
RTC_CHECK(sid >= 0);
if (!transport_available_) {
return;
}
send_ssrcs_.insert(sid);
recv_ssrcs_.insert(sid);
}
void RemoveSctpDataStream(int sid) override {
RTC_CHECK(sid >= 0);
send_ssrcs_.erase(sid);
recv_ssrcs_.erase(sid);
// Unlike the real SCTP transport, act like the closing procedure finished
// instantly, doing the same snapshot thing as below.
for (webrtc::SctpDataChannel* ch : std::set<webrtc::SctpDataChannel*>(
connected_channels_.begin(), connected_channels_.end())) {
if (connected_channels_.count(ch)) {
ch->OnClosingProcedureComplete(sid);
}
}
}
bool ReadyToSendData() const override { return ready_to_send_; }
// Set true to emulate the SCTP stream being blocked by congestion control.
void set_send_blocked(bool blocked) {
send_blocked_ = blocked;
if (!blocked) {
// Take a snapshot of the connected channels and check to see whether
// each value is still in connected_channels_ before calling
// OnTransportReady(). This avoids problems where the set gets modified
// in response to OnTransportReady().
for (webrtc::SctpDataChannel* ch : std::set<webrtc::SctpDataChannel*>(
connected_channels_.begin(), connected_channels_.end())) {
if (connected_channels_.count(ch)) {
ch->OnTransportReady(true);
}
}
}
}
// Set true to emulate the transport channel creation, e.g. after
// setLocalDescription/setRemoteDescription called with data content.
void set_transport_available(bool available) {
transport_available_ = available;
}
// Set true to emulate the transport ReadyToSendData signal when the transport
// becomes writable for the first time.
void set_ready_to_send(bool ready) {
RTC_CHECK(transport_available_);
ready_to_send_ = ready;
if (ready) {
std::set<webrtc::SctpDataChannel*>::iterator it;
for (it = connected_channels_.begin(); it != connected_channels_.end();
++it) {
(*it)->OnTransportReady(true);
}
}
}
void set_transport_error() { transport_error_ = true; }
int last_sid() const { return last_sid_; }
const webrtc::SendDataParams& last_send_data_params() const {
return last_send_data_params_;
}
bool IsConnected(webrtc::SctpDataChannel* data_channel) const {
return connected_channels_.find(data_channel) != connected_channels_.end();
}
bool IsSendStreamAdded(uint32_t stream) const {
return send_ssrcs_.find(stream) != send_ssrcs_.end();
}
bool IsRecvStreamAdded(uint32_t stream) const {
return recv_ssrcs_.find(stream) != recv_ssrcs_.end();
}
private:
int last_sid_;
webrtc::SendDataParams last_send_data_params_;
bool send_blocked_;
bool transport_available_;
bool ready_to_send_;
bool transport_error_;
std::set<webrtc::SctpDataChannel*> connected_channels_;
std::set<uint32_t> send_ssrcs_;
std::set<uint32_t> recv_ssrcs_;
};
#endif // PC_TEST_FAKE_DATA_CHANNEL_PROVIDER_H_
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