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Read recv timestamps from socket (posix only).

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This helps a lot on Android devices where the user threads can be scheduled with low priority when the app is in the background, causing spurious significantly delayed before a packet can be read from the socket. With this patch the timestamp is taken by the kernel when the packet actually arrives.

R=juberti@chromium.org
TBR=juberti@webrtc.org

BUG=webrtc:5773

Review URL: https://codereview.webrtc.org/1944683002 .

Cr-Commit-Position: refs/heads/master@{#12850}
This commit is contained in:
Stefan Holmer
2016-05-23 18:19:26 +02:00
parent 181310fb6f
commit 9131efdb30
34 changed files with 256 additions and 89 deletions
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8
webrtc/base/asyncudpsocket.cc
View File

@ -102,7 +102,8 @@ void AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) {
ASSERT(socket_.get() == socket);
SocketAddress remote_addr;
int len = socket_->RecvFrom(buf_, size_, &remote_addr);
int64_t timestamp;
int len = socket_->RecvFrom(buf_, size_, &remote_addr, &timestamp);
if (len < 0) {
// An error here typically means we got an ICMP error in response to our
// send datagram, indicating the remote address was unreachable.
@ -116,8 +117,9 @@ void AsyncUDPSocket::OnReadEvent(AsyncSocket* socket) {
// TODO: Make sure that we got all of the packet.
// If we did not, then we should resize our buffer to be large enough.
SignalReadPacket(this, buf_, static_cast<size_t>(len), remote_addr,
CreatePacketTime(0));
SignalReadPacket(
this, buf_, static_cast<size_t>(len), remote_addr,
(timestamp > -1 ? PacketTime(timestamp, 0) : CreatePacketTime(0)));
}
void AsyncUDPSocket::OnWriteEvent(AsyncSocket* socket) {