```try { val response = service.greeting(greet...

# kotlinx-rpc

[ursus]

try {
    val response = service.greeting(greeting)
    println("Response: ${response.firstNameMaybe}, ${response.lastName}")
} catch (ex: Exception) {
    ex.printStackTrace()
}

prints

io.grpc.StatusException: UNAVAILABLE: io exception
	at kotlinx.rpc.grpc.client.internal.ClientCallScopeImpl$channelResponseListener$$inlined$clientCallListener$1.onClose(ClientCall.jvm.kt:60)
	at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:566)
	at io.grpc.internal.ClientCallImpl.access$100(ClientCallImpl.java:72)
	at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:734)
	at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:715)
	at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
	at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: getsockopt: /127.0.0.1:8001
Caused by: java.net.ConnectException: Connection refused: getsockopt
	at java.base/sun.nio.ch.Net.pollConnect(Native Method)
	at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)
	at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:973)
	at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:336)
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:784)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:732)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:658)

when server is offline

however there are 0 references to my code, that's gonna be a problem in prod. Any way around that?

[Alexander Sysoev]

That is how grpc-java works

[ursus]

how do people debug this? seems like a shoulder shrug

[Alexander Sysoev]

I'll check it out