Hey Carl, Thanks for your help with this!
Is it correct that if I am submitting calls every 10 seconds, but my keepAliveTime > 10seconds, then no keep alives would be sent? Or are keep alives sent regardless of request activity? Is it only failed keep alive pings that will indicate a channel is down but not regular requests? Thanks again, Yosef On Wednesday, June 5, 2019 at 1:57:25 PM UTC-4, Carl Mastrangelo wrote: > > Try setting the keep alive settings defined here: > > > https://grpc.github.io/grpc-java/javadoc/io/grpc/ManagedChannelBuilder.html#keepAliveTimeout-long-java.util.concurrent.TimeUnit- > > On Wednesday, June 5, 2019 at 10:48:38 AM UTC-7, yfe...@gmail.com wrote: >> >> Hey folks, >> >> I'm making calls using a `ManagedChannel` over a VPN connection. When the >> VPN renegotiates (~ 8 hours), a periodic call (issued every 10 seconds) >> that would ordinarily take 1ms times out repeatedly for about 15 min >> instead before the `ManagedChannel` figures out the connection is bad >> (fails with `RuntimeException: UNAVAILABLE`) and resets. Is there a way to >> make that happen faster? I've set the deadline for this call to 2 seconds >> which is typically more than enough time (usually comes back in under 10 >> ms). The logs end up looking something like >> >> >> 14:14:05.256 io.grpc.StatusRuntimeException: DEADLINE_EXCEEDED: deadline >> exceeded after 4999901019ns >> 14:14:15.257 io.grpc.StatusRuntimeException: DEADLINE_EXCEEDED: deadline >> exceeded after 4999901019ns >> >> ... call is made every 10 sec and fails like this for 15 min before >> >> 14:30:42.236 java.io.IOException: Connection timed out >> at sun.nio.ch.FileDispatcherImpl.read0(Native Method) >> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) >> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) >> at sun.nio.ch.IOUtil.read(IOUtil.java:192) >> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) >> at >> io.grpc.netty.shaded.io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288) >> at >> io.grpc.netty.shaded.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1132) >> at >> io.grpc.netty.shaded.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:347) >> at >> io.grpc.netty.shaded.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148) >> at >> io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:656) >> at >> io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:591) >> at >> io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:508) >> at >> io.grpc.netty.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:470) >> at >> io.grpc.netty.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:909) >> at >> io.grpc.netty.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) >> at java.lang.Thread.run(Thread.java:748) >> Wrapped by: io.grpc.StatusRuntimeException: UNAVAILABLE: io exception >> >> After which everything resumes normally. >> >> How can I get `ManagedChannel` to pick up that the connection is bad and >> to reset earlier than 15min. I've tested outside of grpc that the VPN >> renegotiation takes about 2 seconds, not anywhere close to 15 min. >> >> I'm using GRPC for java 1.18.0 with Netty >> >> Many thanks! >> >> Yosef >> > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/bc28574a-86fa-4afe-b4e7-bfcd69eac43b%40googlegroups.com.
