Terminate all threads if the server fails to bind to a port

Signed-off-by: Graham <gpe@openrs2.org>

game/src/main/kotlin/org/openrs2/game/GameServer.kt

@@ -17,7 +17,13 @@ public class GameServer @Inject constructor(
 
         serviceManager.startAsync()
         runtime.addShutdownHook(shutdownHook)
+        try {
             serviceManager.awaitHealthy()
+        } catch (ex: Throwable) {
+            serviceManager.stopAsync().awaitStopped()
+            runtime.removeShutdownHook(shutdownHook)
+            throw ex
+        }
 
         val elapsed = System.nanoTime() - start
         logger.info { "Started OpenRS2 in ${elapsed / NANOS_PER_MILLI} milliseconds" }

game/src/main/kotlin/org/openrs2/game/net/NetworkService.kt

@@ -36,6 +36,7 @@ public class NetworkService @Inject constructor(
 
         CompletableFuture.allOf(httpFuture, rs2PrimaryFuture, rs2SecondaryFuture).handle { _, ex ->
             if (ex != null) {
+                group.shutdownGracefully()
                 notifyFailed(ex)
             } else {
                 notifyStarted()