Android Volley Returning results twice for one request

Question

I have been trying to figure out this issue for two days now and I am completly stumped. For some reason I am sending one request to the queue but volley is returning it tw

Answer 1

I believe I have figured it out after stepping through the code more. I believe it is the softttl that is causing this behavior. In the Volley cachedispatcher

            if (!entry.refreshNeeded()) {
                // Completely unexpired cache hit. Just deliver the response.
                mDelivery.postResponse(request, response);
            } else {
                // Soft-expired cache hit. We can deliver the cached response,
                // but we need to also send the request to the network for
                // refreshing.
                request.addMarker("cache-hit-refresh-needed");
                request.setCacheEntry(entry);

                // Mark the response as intermediate.
                response.intermediate = true;

                // Post the intermediate response back to the user and have
                // the delivery then forward the request along to the network.
                mDelivery.postResponse(request, response, new Runnable() {
                    @Override
                    public void run() {
                        try {
                            mNetworkQueue.put(request);
                        } catch (InterruptedException e) {
                            // Not much we can do about this.
                        }
                    }
                });

This posts the response then sends it to the network which posts another response to the same listener.