GameCult/CultLib
Watch
9
0
Fork
You've already forked CultLib
 0
Code Issues Pull requests 2 Projects Releases Packages Wiki Activity Actions

CultNet: a withdrawn hop subscription is refused with a typed error and its rows are withdrawn

Browse source 
Reconcile's withdrawal sent an untyped error with no subscription id and left the
peer holding the rows the subscription had delivered. It now sends removals for
those rows, then a variant_unsupported error whose details carry
field "subscriptionId" and the id (the existing details slots; no new wire key).
The subscribe and per-change paths use the same code. The error schema and the
Rust CultNetErrorCode accept variant_unsupported, so a Rust peer decodes it
instead of refusing an unknown code.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-09-29 10:12:20 +02:00
commit cbd3b4f3ce
6 changed files with 33 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

13
src/GameCult.Networking/CultNetDatabaseSubscriptionServer.cs
View file

@ -208,7 +208,7 @@ namespace GameCult.Networking
{
// Q6: a snapshot that selects a variant is refused to this subscriber as a typed error.
Withdraw(key, sendRemovals: false, forgetRequest: true);
peer.SendCultNet(new CultNetErrorMessage { Error = refusal.Message });
peer.SendCultNet(CultNetErrorMessage.ForVariantUnsupported(refusal.Message, subscriptionId));
return Task.CompletedTask;
}
catch
@ -330,7 +330,7 @@ namespace GameCult.Networking
catch (NotSupportedException refusal)
{
// Q6: a variant is not a record CultNet can carry; the subscriber that would have received it is told, by key.
peer.SendCultNet(new CultNetErrorMessage { Error = refusal.Message });
peer.SendCultNet(CultNetErrorMessage.ForVariantUnsupported(refusal.Message));
return;
}
@ -358,11 +358,12 @@ namespace GameCult.Networking
}
catch (NotSupportedException refusal)
{
// Q6: the selection selects a variant, which CultNet cannot carry. Refused as the subscribe path refuses it: the
// subscription is withdrawn, so the peer is told once, not once per store change; a change never throws out of
// Q6: the selection selects a variant, which CultNet cannot carry. The subscription is withdrawn, so the peer is
// told once, not once per store change; the rows it delivered are withdrawn too (removals first), so the peer
// does not keep them as live, and the typed error names the subscription that ended. A change never throws out of
// the change handler.
Withdraw(key, sendRemovals: false, forgetRequest: true);
key.Peer.SendCultNet(new CultNetErrorMessage { Error = refusal.Message });
Withdraw(key, sendRemovals: true, forgetRequest: true);
key.Peer.SendCultNet(CultNetErrorMessage.ForVariantUnsupported(refusal.Message, key.Id));
return;
}