Ensure we always call quiche_conn_on_timeout(...) when a timeout is a…

…bout to run (java-native-access#206)

Motivation:

If we cancel a timeout as its remaining time is elapsed we need to ensure we also call quiche_conn_on_timeout(...) as otherwise we may not produce the required  data.

Modifications:

Call run() directly when a timeout is elepsed

Result:

Timeouts are handled correctly

src/main/java/io/netty/incubator/codec/quic/QuicheQuicChannel.java

@@ -1416,7 +1416,14 @@ void scheduleTimeout() {
                         nanos, TimeUnit.NANOSECONDS);
             } else {
                 long remaining = timeoutFuture.getDelay(TimeUnit.NANOSECONDS);
-                if (remaining <= 0 || remaining > nanos) {
+                if (remaining <= 0) {
+                    // This means the timer already elapsed. In this case just cancel the future and call run()
+                    // directly. This will ensure we correctly call quiche_conn_on_timeout() etc.
+                    cancel();
+                    run();
+                } else if (remaining > nanos) {
+                    // The new timeout is smaller then what was scheduled before. Let's cancel the old timeout
+                    // and schedule a new one.
                     cancel();
                     timeoutFuture = eventLoop().schedule(this, nanos, TimeUnit.NANOSECONDS);
                 }