NIP-01 what is the max length of subscription_id?

[noobdummy]

<subscription_id> is a random string that should be used to represent a subscription.

what is the max length of subscription_id?
is there a limit?

[fiatjaf]

Whatever relays want to allow. I was running a relay I wouldn't allow more than 64 characters.

[barkyq]

I only allow 20 characters on mine. If it is larger than that the relay responds with a NOTICE and doesn't accept the subscription.

[mikedilger]

gossip client uses 32 characters, 16 representing the time, 16 being random. I guess we aren't talking to @barkyq 's relay.

[barkyq]

Whoops @mikedilger I will update that :) I just figured that, since it only needs to be unique per websocket connection (on my relay), more than 20 chars was a bit overkill, and that is 20 bytes on every returned event...

[barkyq]

I also just revealed that I do not use gossip lol sorry mike I hear it is very good though. one day I'll get that set up

[mikedilger]

your right @barkyq they don't have to be 32 characters. I could just use 2 characters and count up from zero.

[barkyq]

It's your call, I will change the max_subid_length to 32 on my relay though

[mikedilger]

No, no you're right. No I mean I'm right that you're right. :-) Let's both make the change.

[barkyq]

Sounds good. Thanks for letting me know.