Sorry for confusions. The logcat was not the same device and the timer I added didn't work properly. Releasing resources by shutting down a channel when there is a period of inactivity solved my issue.
On Sunday, June 26, 2016 at 1:06:06 AM UTC+9, Eric Anderson wrote: > > On Sat, Jun 25, 2016 at 4:36 AM, Taehyun Park <gold.d...@gmail.com > <javascript:>> wrote: > >> I'm using grpc java on Android and I found a very weird issue. After a >> certain period a ManagedChannel no longer works. >> > > Was that after a period of inactivity? Were you on good WiFi (one that you > trust), bad WiFi, or cellular? > > I instantiated a ManagedChannel when there is no cached channel then cache >> it until the number of active channels is 0. My app worked fine and didn't >> have a problem when it's launched. but all grpc calls stopped working after >> a certain period. The app wasn't closed but it was in a backstack. >> I searched a similar issue in grpc issue tracker on github but I'm not >> sure if https://github.com/grpc/grpc-java/issues/1636 and >> https://github.com/grpc/grpc-java/issues/1648 are the issue I'm having. >> > > When discussing keepalive, the general assumption is the network > misbehaved (which is not uncommon on mobile). Keepalive is only going to be > active when an RPC is outstanding. That means that it will need to be > combined with channel idleness to close TCP connections after inactivity. > > https://github.com/grpc/grpc-java/issues/1972 > https://github.com/grpc/grpc-java/issues/1276 > > Both are planned for 1.0 in order to give a full solution to this sort of > issue (assuming that failures are due to poor networks). Idleness in > general is useful. With it you really don't have much reason to cache the > channel like you were. You could create the channel eagerly (which starts > IDLE) and the channel can release resources when there is a period of > inactivity. > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/2b885e4d-abef-4658-a6e9-45c9a4cd967e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
