[Tradfri] Force session resume after communication errors

As discussed in eclipse-archived/smarthome#6065 the tradfri gateway does not support a session resumption after a gateway reboot or other communcation errors. Californium 1.0.7 is able to force a full handshake instead. This change calls "forceResumeSessionFor" after a communication error, so that a full handshake is done. Signed-off-by: Holger Reichert <[email protected]>
hreichert · Jan 30, 2019 · d6b10c2 · d6b10c2
1 parent 14dce31
commit d6b10c2
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/...fri/src/main/java/org/openhab/binding/tradfri/internal/handler/TradfriGatewayHandler.java b/...fri/src/main/java/org/openhab/binding/tradfri/internal/handler/TradfriGatewayHandler.java
@@ -340,6 +340,15 @@ private synchronized void requestDeviceDetails(String instanceId) {
 
     @Override
     public void setStatus(ThingStatus status, ThingStatusDetail statusDetail) {
+
+        // to fix connection issues after a gateway reboot, a session resume is forced for the next command
+        if (status == ThingStatus.OFFLINE && statusDetail == ThingStatusDetail.COMMUNICATION_ERROR) {
+            logger.debug("Gateway communication error. Forcing session resume on next command.");
+            TradfriGatewayConfig configuration = getConfigAs(TradfriGatewayConfig.class);
+            InetSocketAddress peerAddress = new InetSocketAddress(configuration.host, configuration.port);
+            this.dtlsConnector.forceResumeSessionFor(peerAddress);
+        }
+
         // are we still connected at all?
         if (endPoint != null) {
             updateStatus(status, statusDetail);