I can successfully access servlets using this address, firewall rules - 
allow full range of IPs.

Should i configure a host name in `NettyServerBuilder` explicitly?

On Monday, September 25, 2017 at 9:01:53 PM UTC+3, Kun Zhang wrote:
>
> Have you confirmed that this address is indeed connectable, e.g., allowed 
> by firewall?
>
> On Monday, September 25, 2017 at 4:54:57 AM UTC-7, [email protected] 
> wrote:
>>
>>
>> I am configuring gRPC according to the answer 
>> <https://stackoverflow.com/a/46332600/8634992>, which says: "Using gRPC 
>> with GAE Java 8 doesn't need anything special.".
>>
>> A gRPC server is started and deployed on a GAE Standard environment for 
>> Java 8:
>>
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>> MyGrpcService service = ...
>> NettyServerBuilder.forPort(50051).addService(service).build();
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>>
>> A client uses a service with the ManagedChannel:
>>
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>> ManagedChannel channel = NettyChannelBuilder.forAddress("
>> my-project.appspot.com", 50051)
>>                                                                           
>>      .usePlaintext(true)
>>                                                                           
>>      .build();
>> MyGrpcService.newBlockingStub(channel);
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>>
>> What am I doing wrong? The call to the service has the following result:
>>
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>> Exception in thread "main" io.grpc.StatusRuntimeException: UNAVAILABLE
>> at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:210)
>> at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:191)
>> at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:124)
>> at 
>> io.spine.client.grpc.QueryServiceGrpc$QueryServiceBlockingStub.read(QueryServiceGrpc.java:159)
>> at 
>> io.spine.examples.todolist.client.CommandLineTodoClient.getMyListView(CommandLineTodoClient.java:189)
>> at 
>> io.spine.examples.todolist.view.MyTasksListView.render(MyTasksListView.java:68)
>> at io.spine.cli.AbstractScreen.renderView(AbstractScreen.java:63)
>> at io.spine.cli.action.TransitionAction.execute(TransitionAction.java:51)
>> at io.spine.cli.view.AbstractView.executeAction(AbstractView.java:108)
>> at io.spine.cli.view.AbstractView.render(AbstractView.java:92)
>> at io.spine.cli.AbstractScreen.renderView(AbstractScreen.java:63)
>> at io.spine.cli.action.TransitionAction.execute(TransitionAction.java:51)
>> at io.spine.cli.view.AbstractView.executeAction(AbstractView.java:108)
>> at io.spine.cli.view.AbstractView.render(AbstractView.java:92)
>> at io.spine.cli.AbstractScreen.renderView(AbstractScreen.java:63)
>> at 
>> io.spine.examples.todolist.ClientApplication.run(ClientApplication.java:52)
>> at io.spine.examples.todolist.GaeClient.main(GaeClient.java:39)
>> Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: 
>> Connection timed out: no further information: 
>> spine-dev.appspot.com/216.58.209.84:50051
>> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>> at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
>> at 
>> io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:352)
>> at 
>> io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)
>> at 
>> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633)
>> at 
>> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
>> at 
>> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
>> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
>> at 
>> io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
>> at 
>> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
>> at java.lang.Thread.run(Thread.java:745)
>> Caused by: java.net.ConnectException: Connection timed out: no further 
>> information
>> ... 11 more
>>
>> -----------------------------------------------------------------------------------------------------------------------------------------
>>
>

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