stats: implement iceLocalUsernameFragment

https://www.w3.org/TR/webrtc-stats/#dom-rtctransportstats-icelocalusernamefragment

BUG=webrtc:14022

Change-Id: If56ebe66d83f4e535c2245f2ca3848469914679f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261243
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Cr-Commit-Position: refs/heads/main@{#36772}

api/stats/rtcstats_objects.h

@@ -709,6 +709,7 @@ class RTC_EXPORT RTCTransportStats final : public RTCStats {
   RTCStatsMember<std::string> srtp_cipher;
   RTCStatsMember<uint32_t> selected_candidate_pair_changes;
   RTCStatsMember<std::string> ice_role;
+  RTCStatsMember<std::string> ice_local_username_fragment;
 };
 
 }  // namespace webrtc

p2p/base/ice_transport_internal.h

@@ -49,6 +49,7 @@ struct IceTransportStats {
   uint64_t packets_received = 0;
 
   IceRole ice_role = ICEROLE_UNKNOWN;
+  std::string ice_local_username_fragment;
 };
 
 typedef std::vector<Candidate> Candidates;

p2p/base/p2p_transport_channel.cc

@@ -1665,6 +1665,7 @@ bool P2PTransportChannel::GetStats(IceTransportStats* ice_transport_stats) {
   ice_transport_stats->packets_received = packets_received_;
 
   ice_transport_stats->ice_role = GetIceRole();
+  ice_transport_stats->ice_local_username_fragment = ice_parameters_.ufrag;
 
   return true;
 }

pc/rtc_stats_collector.cc

@@ -2116,6 +2116,8 @@ void RTCStatsCollector::ProduceTransportStats_n(
           channel_stats.ice_transport_stats.selected_candidate_pair_changes;
       transport_stats->ice_role =
           IceRoleToRTCIceRole(channel_stats.ice_transport_stats.ice_role);
+      transport_stats->ice_local_username_fragment =
+          channel_stats.ice_transport_stats.ice_local_username_fragment;
       for (const cricket::ConnectionInfo& info :
            channel_stats.ice_transport_stats.connection_infos) {
         if (info.best_connection) {

pc/rtc_stats_collector_unittest.cc

@@ -2449,6 +2449,8 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStats) {
   rtp_transport_channel_stats.ice_transport_stats.packets_received = 4;
   rtp_transport_channel_stats.ice_transport_stats
       .selected_candidate_pair_changes = 1;
+  rtp_transport_channel_stats.ice_transport_stats.ice_local_username_fragment =
+      "thelocalufrag";
   pc_->SetTransportStats(kTransportName, {rtp_transport_channel_stats});
 
   // Get stats without RTCP, an active connection or certificates.
@@ -2466,6 +2468,7 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStats) {
   expected_rtp_transport.dtls_role = RTCDtlsRole::kUnknown;
   expected_rtp_transport.selected_candidate_pair_changes = 1;
   expected_rtp_transport.ice_role = RTCIceRole::kUnknown;
+  expected_rtp_transport.ice_local_username_fragment = "thelocalufrag";
 
   ASSERT_TRUE(report->Get(expected_rtp_transport.id()));
   EXPECT_EQ(
@@ -2491,6 +2494,8 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStats) {
   rtcp_transport_channel_stats.ice_transport_stats.packets_sent = 1;
   rtcp_transport_channel_stats.ice_transport_stats.bytes_received = 42;
   rtcp_transport_channel_stats.ice_transport_stats.packets_received = 4;
+  rtcp_transport_channel_stats.ice_transport_stats.ice_local_username_fragment =
+      "thelocalufrag";
   pc_->SetTransportStats(kTransportName, {rtp_transport_channel_stats,
                                           rtcp_transport_channel_stats});
 
@@ -2509,6 +2514,7 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStats) {
   expected_rtcp_transport.dtls_role = RTCDtlsRole::kUnknown;
   expected_rtcp_transport.selected_candidate_pair_changes = 0;
   expected_rtcp_transport.ice_role = RTCIceRole::kUnknown;
+  expected_rtcp_transport.ice_local_username_fragment = "thelocalufrag";
 
   expected_rtp_transport.rtcp_transport_stats_id = expected_rtcp_transport.id();
   ASSERT_TRUE(report->Get(expected_rtp_transport.id()));
@@ -2610,6 +2616,8 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStatsWithCrypto) {
   rtp_transport_channel_stats.dtls_role = rtc::SSL_CLIENT;
   rtp_transport_channel_stats.ice_transport_stats.ice_role =
       cricket::ICEROLE_CONTROLLING;
+  rtp_transport_channel_stats.ice_transport_stats.ice_local_username_fragment =
+      "thelocalufrag";
   // 0x2F is TLS_RSA_WITH_AES_128_CBC_SHA according to IANA
   rtp_transport_channel_stats.ssl_cipher_suite = 0x2F;
   rtp_transport_channel_stats.srtp_crypto_suite = rtc::kSrtpAes128CmSha1_80;
@@ -2629,10 +2637,11 @@ TEST_F(RTCStatsCollectorTest, CollectRTCTransportStatsWithCrypto) {
   expected_rtp_transport.bytes_received = 0;
   expected_rtp_transport.packets_sent = 0;
   expected_rtp_transport.packets_received = 0;
+  expected_rtp_transport.ice_role = RTCIceRole::kControlling;
+  expected_rtp_transport.ice_local_username_fragment = "thelocalufrag";
   // Crypto parameters
   expected_rtp_transport.tls_version = "0203";
   expected_rtp_transport.dtls_role = RTCDtlsRole::kClient;
-  expected_rtp_transport.ice_role = RTCIceRole::kControlling;
   expected_rtp_transport.dtls_cipher = "TLS_RSA_WITH_AES_128_CBC_SHA";
   expected_rtp_transport.srtp_cipher = "AES_CM_128_HMAC_SHA1_80";
 

pc/rtc_stats_integrationtest.cc

@@ -1144,6 +1144,7 @@ class RTCStatsReportVerifier {
     verifier.TestMemberIsPositive<uint32_t>(
         transport.selected_candidate_pair_changes);
     verifier.TestMemberIsDefined(transport.ice_role);
+    verifier.TestMemberIsDefined(transport.ice_local_username_fragment);
     return verifier.ExpectAllMembersSuccessfullyTested();
   }
 

stats/rtcstats_objects.cc

@@ -1098,7 +1098,8 @@ WEBRTC_RTCSTATS_IMPL(RTCTransportStats, RTCStats, "transport",
     &dtls_role,
     &srtp_cipher,
     &selected_candidate_pair_changes,
-    &ice_role)
+    &ice_role,
+    &ice_local_username_fragment)
 // clang-format on
 
 RTCTransportStats::RTCTransportStats(const std::string& id,
@@ -1121,7 +1122,8 @@ RTCTransportStats::RTCTransportStats(std::string&& id, int64_t timestamp_us)
       dtls_role("dtlsRole"),
       srtp_cipher("srtpCipher"),
       selected_candidate_pair_changes("selectedCandidatePairChanges"),
-      ice_role("iceRole") {}
+      ice_role("iceRole"),
+      ice_local_username_fragment("iceLocalUsernameFragment") {}
 
 RTCTransportStats::RTCTransportStats(const RTCTransportStats& other)
     : RTCStats(other.id(), other.timestamp_us()),
@@ -1139,7 +1141,8 @@ RTCTransportStats::RTCTransportStats(const RTCTransportStats& other)
       dtls_role(other.dtls_role),
       srtp_cipher(other.srtp_cipher),
       selected_candidate_pair_changes(other.selected_candidate_pair_changes),
-      ice_role(other.ice_role) {}
+      ice_role(other.ice_role),
+      ice_local_username_fragment(other.ice_local_username_fragment) {}
 
 RTCTransportStats::~RTCTransportStats() {}