Add timeout for each query?

[XadillaX]

Any plan to add a timeout parameter for each query function?

[bradh352]

can you elaborate on what you are asking? There are already configurable timeouts

[XadillaX]

maybe I missed somewhere on the document? I didn't find how to configure it.

[bradh352]

ares_init_options() ARES_OPT_TIMEOUT/ARES_OPT_TIMEOUTMS combined with ARES_OPT_TRIES determines the overall time any query can take. If that's not enough, you can always handle the timeouts yourself by adjusting the timeout parameters passed to select() and possibly use ares_cancel() depending on your implementation.

[XadillaX]

I meant for each query, not a channel.

If I use ares_cancel, will all active query in that channel be canceled?

[bnoordhuis]

Yes, ares_cancel() will do that.

@bradh352 Is it currently possible to cancel a query without resorting to a channel-per-query model? My understanding after reading of the code is that you can't and that is the feature that @XadillaX is asking for.

[cjihrig]

It's also my understanding that the current code cannot cancel individual queries.

I put together a small proof of concept that I think would allow it at cjihrig@4103105. It would involve exposing queries to userland. I'm not familiar enough with this project and its maintainers to know if this is a route worth exploring in more detail or not.