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Websocket for UI interactive refreshing #25661

Open silverwind opened 1 year ago

silverwind commented 1 year ago

Feature Description

Currently we have Server-Sent-Events aka. EventSource for a few things but it's too unreliable because browser enforce a 6 connection limit per browser window and I think our implementation also has a number of unresolved bugs.

We should therefore switch EventSource to Websockets. From what I gather, suitable modules are:

For the frontend side, I recommend SharedWorker similar to this that can communicate "events" that are simple JSON messages to all open tabs. Could initially also be done on main thread because workers are a very hard to debug in browsers.

delvh commented 1 year ago

I think this issue exists already, the original even has a bounty if I remember correctly.

silverwind commented 1 year ago

I couldn't find it earlier. If it exists, I'll add my comment there instead.

techknowlogick commented 1 year ago

Ping @kdumontnu as I believe he was the one who put the bounty on it

KN4CK3R commented 1 year ago

This is the one with the bounty but we talk about a general refreshing.

lunny commented 1 year ago

We need a pub/sub abstract layer to replace modules/eventsource as backend of the websocket server side.

silverwind commented 1 year ago

For distributed gitea setups a pub/sub mechanism is indeed necessary so that events originating on gitea instance 1 can propagate to clients connected on instance 2. Often this is done through redis, which would then make it a hard dependency, at least for distributed setups.

lunny commented 1 year ago

For distributed gitea setups a pub/sub mechanism is indeed necessary so that events originating on gitea instance 1 can propagate to clients connected on instance 2. Often this is done through redis, which would then make it a hard dependency, at least for distributed setups.

For single and default configuration, we can have a memory pub/sub implementation based on golang channel and a disk implementation.

anbraten commented 6 months ago

linking https://github.com/go-gitea/gitea/issues/2287