Websocket connection stops working after few days

[gyan]

Bug

I am running graph-node in a dockerized environment inside aws ec2. Both https and wss endpoints work fine, but after few days the websocket endpoint suddenly stops responding and request finishes after almost 5-10 seconds.

When I restart the container, everything works normally as expected and the issue repeats itself again after sometimes.

[azf20]

Hi @gyan - thanks for reporting. Graph Node's current subscriptions implementation is known not to be resilient, which may be what you are seeing here. We have a refactor planned, but have not got to it yet. What are you using the websocket connection for?

[gyan]

Thanks for the update @azf20
Well I am using it to listen to new data as a part of the subscription service offered by graphql servers.
If there is no tentative timeline for the same, could you offer an alternative solution to the same? Interval based Polling seems to be the way to go.

Our graph server is supposed to index high frequency data and deliver the same to the subscribed client. So, subscriptions seemed a great way to cater to this problem.

[azf20]

OK - yes interval based polling is the most reliable & recommended approach at this point, though we will hope to enable better support your high frequency requirement with subscriptions in future

[gyan]

Hi @azf20
Earlier I was able to fix the web socket port unreachability by simply restarting the container. Although, now it doesn't seem to fix and the port is still unreachable. Do I have to redeploy the server?

[nakamuraos]

Hi @azf20,
I have same the issue. Any new update for it?
I'm using v0.25.0.

[azf20]

hey @nakamuraos and @gyan - no additional update for now. As mentioned websockets are not currently recommended due to instability

[KholdStare]

@azf20 Hi! Wondering if there are any updates regarding websocket support, including on the hosted service. It would make our frontend a lot simpler/responsive if we could just subscribe to updates.

[lutter]

Subscriptions are no longer supported