(IXCobraConnection) set a ping timeout of 90 seconds. If no pong messages are received as responses to ping for a while, give up and close the connection

docs/CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 All changes to this project will be documented in this file.
 
+## [8.0.5] - 2020-01-31
+
+(IXCobraConnection) set a ping timeout of 90 seconds. If no pong messages are received as responses to ping for a while, give up and close the connection
+
 ## [8.0.4] - 2020-01-31
 
 (cobra to sentry) remove noisy logging

ixcobra/ixcobra/IXCobraConnection.cpp

@@ -265,7 +265,15 @@ namespace ix
         _webSocket->setUrl(url);
         _webSocket->setPerMessageDeflateOptions(webSocketPerMessageDeflateOptions);
         _webSocket->setTLSOptions(socketTLSOptions);
+
+        // Send a websocket ping every N seconds (N = 30) now
+        // This should keep the connection open and prevent some load balancers such as
+        // the Amazon one from shutting it down
         _webSocket->setPingInterval(kPingIntervalSecs);
+
+        // If we don't receive a pong back, declare loss after 3 * N seconds
+        // (will be 90s now), and close and restart the connection
+        _webSocket->setPingTimeout(3 * kPingIntervalSecs);
     }
 
     //

ixwebsocket/IXWebSocketVersion.h

@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "8.0.4"
+#define IX_WEBSOCKET_VERSION "8.0.5"