> > Hi, > > On 3/10/17 11:01 AM, Christophe Fergeau wrote: > > On Fri, Mar 10, 2017 at 10:49:54AM -0600, Jeremy White wrote: > >> Hey all, > >> > >> We've got an issue with a remote viewer kiosk. That is, in our normal > >> mode of operation, if something goes wrong with a client connection > >> (e.g. the sessions is killed, server restarted normally), the kiosk will > >> exit on disconnect, and we get a chance to retry the connection, or > >> present the user with a 'server down' style message. > >> > >> But in the case of a serious network problem or a server hard power > >> cycle (i.e. no TCP FIN packets can flow), our end user behavior is not > >> ideal - the kiosk appears to hang solid, requiring a power cycle. > >> > >> That's because we've got the stock keepalive timeouts, or about 2 hours > >> and 11 minutes, before the client sees the disconnect. > >> > >> Now this is a relatively rare occurrence, and arguably a minor nuisance, > >> but I've been asked to see what it would take to improve the situation. > >> > >> I looked for past discussions on spice-devel; I only readily found > >> discussion of the keepalive parameters on the server side, and it looks > >> like we take the idle timer down to 10 minutes now, from 2 hours. I > >> didn't find discussion of something similar client side. > >> > >> Have we considered tuning them on the spice-gtk client side? > >> > >> The attached patch applies a roughly 75 second timeout for me; is this > >> something that would be viable to add to the gtk client, even if only as > >> an option? > > > > Ah, I've coincidentally been looking at this this week too, not with the > > same goal in mind though, my problem is SPICE connection sometimes > > getting dropped if idle for too long. But the current answer is also > > tweaking TCP keepalives. > > Definitely no objection having some form of keepalive client sides, > > though your proposed change is not going to work for the Windows client. > > > > I've made some good progress on patches to add both Windows/linux > > support to glib, but need to finish them up ;) > > Ping? This problem persists, and the patch I sent then: > > https://lists.freedesktop.org/archives/spice-devel/attachments/20170310/6938c6dc/attachment.diff > > has been working for us for a number of years without any unexpected > consequences. > > Could I submit this patch and we remove it when there is a better > solution that also supports Windows? > > Cheers, > > Jeremy I think it was just a mistake. We have similar code in SPICE server and usbredir, just probably got forgotten. It needs only some portability enhancement (first would be Unix, then Windows). Can you send a proper patch with commit message? Frediano _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel