From a4ecd3677dbe81bd7f974e9fbfb736cccba73980 Mon Sep 17 00:00:00 2001
From: pabloFuente <pablofuenteperez@gmail.com>
Date: Mon, 11 Jun 2018 13:19:52 +0200
Subject: [PATCH] openvidu-browser: WebRtcStats get selected ice candidate info

---
 .../WebRtcStats/WebRtcStats.ts                | 49 +++++++++++++++++--
 1 file changed, 44 insertions(+), 5 deletions(-)

diff --git a/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts b/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
index fc7b02a8..3342b8a5 100644
--- a/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
+++ b/openvidu-browser/src/OpenViduInternal/WebRtcStats/WebRtcStats.ts
@@ -18,7 +18,6 @@
 // tslint:disable:no-string-literal
 
 import { Stream } from '../../OpenVidu/Stream';
-import * as adapter from 'webrtc-adapter';
 import platform = require('platform');
 
 export class WebRtcStats {
@@ -94,6 +93,41 @@ export class WebRtcStats {
         }
     }
 
+    public getSelectedIceCandidateInfo(): Promise<any> {
+        return new Promise((resolve, reject) => {
+            this.getStatsAgnostic(this.stream.getRTCPeerConnection(),
+                (stats) => {
+                    if (platform.name!.indexOf('Chrome') !== -1) {
+                        let localCandidateId, remoteCandidateId, googCandidatePair;
+                        const localCandidates = {};
+                        const remoteCandidates = {};
+                        for (const key in stats) {
+                            const stat = stats[key];
+                            if (stat.type === 'localcandidate') {
+                                localCandidates[stat.id] = stat;
+                            } else if (stat.type === 'remotecandidate') {
+                                remoteCandidates[stat.id] = stat;
+                            } else if (stat.type === 'googCandidatePair' && (stat.googActiveConnection === 'true')) {
+                                googCandidatePair = stat;
+                                localCandidateId = stat.localCandidateId;
+                                remoteCandidateId = stat.remoteCandidateId;
+                            }
+                        }
+                        resolve({
+                            googCandidatePair,
+                            localCandidate: localCandidates[localCandidateId],
+                            remoteCandidate: remoteCandidates[remoteCandidateId]
+                        });
+                    } else {
+                        reject('Selected ICE candidate info only available for Chrome');
+                    }
+                },
+                (error) => {
+                    reject(error);
+                });
+        });
+    }
+
     private sendStatsToHttpEndpoint(instrumentation): void {
 
         const sendPost = (json) => {
@@ -306,12 +340,17 @@ export class WebRtcStats {
     }
 
     private standardizeReport(response) {
+        console.log(response);
+        const standardReport = {};
+
         if (platform.name!.indexOf('Firefox') !== -1) {
+            Object.keys(response).forEach(key => {
+                console.log(response[key]);
+            });
             return response;
         }
 
-        const standardReport = {};
-        response.result().forEach((report) => {
+        response.result().forEach(report => {
             const standardStats = {
                 id: report.id,
                 timestamp: report.timestamp,
@@ -329,10 +368,10 @@ export class WebRtcStats {
     private getStatsAgnostic(pc, successCb, failureCb) {
         if (platform.name!.indexOf('Firefox') !== -1) {
             // getStats takes args in different order in Chrome and Firefox
-            return pc.getStats(null, (response) => {
+            return pc.getStats(null).then(response => {
                 const report = this.standardizeReport(response);
                 successCb(report);
-            }, failureCb);
+            }).catch(failureCb);
         } else if (platform.name!.indexOf('Chrome') !== -1) {
             // In Chrome, the first two arguments are reversed
             return pc.getStats((response) => {