commit 149dc72dfa9a49fa348b529f4e21776a95949d2f
author Jonas Oreland <jonaso@webrtc.org> Wed Aug 28 08:10:27 2019 +0200
committer Commit Bot <commit-bot@chromium.org> Wed Aug 28 13:22:08 2019 +0000
tree 5d20f6a28221a19d7c1158ae146bb7e4b9554c57
parent 3b69817e621f0f8ab3a7002eac3b70ab4b070b49

Add support for RTCTransportStats.selectedCandidatePairChanges

This patch adds accounting and reporting needed for
newly added RTCTransportStats.selectedCandidatePairChanges,
https://w3c.github.io/webrtc-stats/#dom-rtctransportstats-selectedcandidatepairchanges

a) P2PTransportChannel counts everytime selected_connection_
is modified and reports this counter in the GetStats()-call.
b) RTCStatsCollector puts the counter into the standardized
stats object.

Bug: webrtc:10900
Change-Id: Ibaeca18706b8edcbcb44b0c6f2754854bcb545ba
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/149830
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28987}

pc/rtc_stats_collector.cc

diff --git a/pc/rtc_stats_collector.cc b/pc/rtc_stats_collector.cc
index 34911fb..9fd0df0 100644
--- a/pc/rtc_stats_collector.cc
+++ b/pc/rtc_stats_collector.cc
@@ -1258,7 +1258,7 @@
       std::string transport_id = RTCTransportStatsIDFromTransportChannel(
           transport_name, channel_stats.component);
       for (const cricket::ConnectionInfo& info :
-           channel_stats.connection_infos) {
+           channel_stats.ice_transport_stats.connection_infos) {
         std::unique_ptr<RTCIceCandidatePairStats> candidate_pair_stats(
             new RTCIceCandidatePairStats(
                 RTCIceCandidatePairStatsIDFromConnectionInfo(info),
@@ -1689,8 +1689,10 @@
       transport_stats->bytes_received = 0;
       transport_stats->dtls_state =
           DtlsTransportStateToRTCDtlsTransportState(channel_stats.dtls_state);
+      transport_stats->selected_candidate_pair_changes =
+          channel_stats.ice_transport_stats.selected_candidate_pair_changes;
       for (const cricket::ConnectionInfo& info :
-           channel_stats.connection_infos) {
+           channel_stats.ice_transport_stats.connection_infos) {
         *transport_stats->bytes_sent += info.sent_total_bytes;
         *transport_stats->bytes_received += info.recv_total_bytes;
         if (info.best_connection) {