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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
#include "jsapi/PacketDumper.h"
#include "jsapi/PeerConnectionImpl.h"
#include "mozilla/media/MediaUtils.h" // NewRunnableFrom
#include "nsThreadUtils.h" // NS_DispatchToMainThread
namespace mozilla {
/* static */
RefPtr<PacketDumper> PacketDumper::GetPacketDumper(
const std::string& aPcHandle) {
MOZ_ASSERT(NS_IsMainThread());
PeerConnectionWrapper pcw(aPcHandle);
if (pcw.impl()) {
return pcw.impl()->GetPacketDumper();
}
return new PacketDumper("");
}
PacketDumper::PacketDumper(const std::string& aPcHandle)
: mPcHandle(aPcHandle), mPacketDumpFlagsMutex("Packet dump flags mutex") {}
void PacketDumper::Dump(size_t aLevel, dom::mozPacketDumpType aType,
bool aSending, const void* aData, size_t aSize) {
// Optimization; avoids making a copy of the buffer, but we need to lock a
// mutex and check the flags. Could be optimized further, if we really want to
if (!ShouldDumpPacket(aLevel, aType, aSending)) {
return;
}
UniquePtr<uint8_t[]> ownedPacket = MakeUnique<uint8_t[]>(aSize);
memcpy(ownedPacket.get(), aData, aSize);
RefPtr<Runnable> dumpRunnable = media::NewRunnableFrom(std::bind(
[this, self = RefPtr<PacketDumper>(this), aLevel, aType, aSending,
aSize](UniquePtr<uint8_t[]>& aPacket) -> nsresult {
// Check again; packet dump might have been disabled since the dispatch
if (!ShouldDumpPacket(aLevel, aType, aSending)) {
return NS_OK;
}
PeerConnectionWrapper pcw(mPcHandle);
RefPtr<PeerConnectionImpl> pc = pcw.impl();
if (!pc) {
return NS_OK;
}
if (!aSending && (aType == dom::mozPacketDumpType::Rtcp ||
aType == dom::mozPacketDumpType::Srtcp)) {
AutoTArray<size_t, 4> dumpLevels;
{
MutexAutoLock lock(mPacketDumpFlagsMutex);
unsigned flag = 1 << (unsigned)aType;
for (size_t i = 0; i < mRecvPacketDumpFlags.size(); ++i) {
if (mRecvPacketDumpFlags[i] & flag) {
dumpLevels.AppendElement(i);
}
}
}
for (size_t level : dumpLevels) {
pc->DumpPacket_m(level, aType, aSending, aPacket, aSize);
}
return NS_OK;
}
pc->DumpPacket_m(aLevel, aType, aSending, aPacket, aSize);
return NS_OK;
},
std::move(ownedPacket)));
NS_DispatchToMainThread(dumpRunnable);
}
nsresult PacketDumper::EnablePacketDump(unsigned long aLevel,
dom::mozPacketDumpType aType,
bool aSending) {
mPacketDumpEnabled = true;
std::vector<unsigned>* packetDumpFlags;
if (aSending) {
packetDumpFlags = &mSendPacketDumpFlags;
} else {
packetDumpFlags = &mRecvPacketDumpFlags;
}
unsigned flag = 1 << (unsigned)aType;
MutexAutoLock lock(mPacketDumpFlagsMutex);
if (aLevel >= packetDumpFlags->size()) {
packetDumpFlags->resize(aLevel + 1);
}
mPacketDumpRtcpRecvCount += !aSending &&
(aType == dom::mozPacketDumpType::Rtcp ||
aType == dom::mozPacketDumpType::Srtcp) &&
!((*packetDumpFlags)[aLevel] & flag);
(*packetDumpFlags)[aLevel] |= flag;
return NS_OK;
}
nsresult PacketDumper::DisablePacketDump(unsigned long aLevel,
dom::mozPacketDumpType aType,
bool aSending) {
std::vector<unsigned>* packetDumpFlags;
if (aSending) {
packetDumpFlags = &mSendPacketDumpFlags;
} else {
packetDumpFlags = &mRecvPacketDumpFlags;
}
unsigned flag = 1 << (unsigned)aType;
MutexAutoLock lock(mPacketDumpFlagsMutex);
if (aLevel < packetDumpFlags->size()) {
mPacketDumpRtcpRecvCount -= !aSending &&
(aType == dom::mozPacketDumpType::Rtcp ||
aType == dom::mozPacketDumpType::Srtcp) &&
((*packetDumpFlags)[aLevel] & flag);
(*packetDumpFlags)[aLevel] &= ~flag;
}
return NS_OK;
}
bool PacketDumper::ShouldDumpPacket(size_t aLevel, dom::mozPacketDumpType aType,
bool aSending) const {
if (!mPacketDumpEnabled) {
return false;
}
if (!aSending && (aType == dom::mozPacketDumpType::Rtcp ||
aType == dom::mozPacketDumpType::Srtcp)) {
// Received (S)RTCP is dumped per-transport, not per-pipeline.
return mPacketDumpRtcpRecvCount > 0;
}
MutexAutoLock lock(mPacketDumpFlagsMutex);
const std::vector<unsigned>* packetDumpFlags;
if (aSending) {
packetDumpFlags = &mSendPacketDumpFlags;
} else {
packetDumpFlags = &mRecvPacketDumpFlags;
}
if (aLevel < packetDumpFlags->size()) {
unsigned flag = 1 << (unsigned)aType;
return flag & packetDumpFlags->at(aLevel);
}
return false;
}
} // namespace mozilla