Add periodic logging for WebRTC ingestion mode

Author: Yuqi Huang

examples/master.js

@@ -228,7 +228,10 @@ registerMasterSignalingClientCallbacks = (signalingClient, formValues, onStatsRe
         // If in WebRTC ingestion mode, retry if no connection was established within 30 seconds.
         // Note: This is an interim setting - the viewer application will retry after 30 seconds if the connection through the WebRTC Ingestion mode is not successful.
         if (master.channelHelper.isIngestionEnabled()) {
-            for (let i = 5; i <= 30; i += 5) {
+            const CHECK_INTERVAL_SECONDS = 5;
+            const RETRY_TIMEOUT_SECONDS = 30;
+            
+            for (let i = CHECK_INTERVAL_SECONDS; i <= RETRY_TIMEOUT_SECONDS; i += CHECK_INTERVAL_SECONDS) {
                 setTimeout(function () {
                     // check the state each 5 seconds
                     //enter retry if still connecting after 30 seconds
@@ -237,14 +240,14 @@ registerMasterSignalingClientCallbacks = (signalingClient, formValues, onStatsRe
                         answerer.getPeerConnection().connectionState !== 'failed' &&
                         answerer.getPeerConnection().connectionState !== 'closed'
                     ) {
-                        if (i < 30) {
+                        if (i < RETRY_TIMEOUT_SECONDS) {
                             console.log(`[${role}] Still connecting after ${i} seconds.`);
                         } else {
-                            console.error(`[${role}] Connection was not successful - Will retry after 30 seconds.`);
+                            console.error(`[${role}] Connection was not successful - Will retry after ${RETRY_TIMEOUT_SECONDS} seconds.`);
                             onPeerConnectionFailed(remoteClientId, false, false);
                         }
                     }
-                }, i* 1000);
+                }, i * 1000);
             }
         }
     });