Handle StateError for closed serviceClient

In https://github.com/dart-lang/json_rpc_2/pull/52 the `Peer` class was
fixed to behave like a `Client` when the connection is closed with
outstanding requests.

`package:dds` was previously relying on having the futures never
complete to send the `serviceDisappeared` code when the client was
closed with outstanding requests. Check also for the `StateError` that
would result from outstanding requests and translate them to
`serviceDisappeared`.

Change-Id: I2d3f186d1d52d34082b7adf5bf962e22df74015b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/158220
Auto-Submit: Nate Bosch <nbosch@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>

pkg/dds/CHANGELOG.md

@@ -1,3 +1,7 @@
+# 1.3.2-dev
+
+- Fix handling of requests that are outstanding when a client channel is closed.
+
 # 1.3.1
 
 - Fixed issue where an exception could be thrown during startup if the target

pkg/dds/lib/src/client.dart

@@ -215,7 +215,11 @@ class _DartDevelopmentServiceClient {
         return await Future.any(
           [
             // Forward the request to the service client or...
-            serviceClient.sendRequest(method, parameters.asMap),
+            serviceClient.sendRequest(method, parameters.asMap).catchError((_) {
+              throw _RpcErrorCodes.buildRpcException(
+                _RpcErrorCodes.kServiceDisappeared,
+              );
+            }, test: (error) => error is StateError),
             // if the service client closes, return an error response.
             serviceClient._clientPeer.done.then(
               (_) => throw _RpcErrorCodes.buildRpcException(

pkg/dds/pubspec.yaml

@@ -3,7 +3,7 @@ description: >-
   A library used to spawn the Dart Developer Service, used to communicate with
   a Dart VM Service instance.
 
-version: 1.3.1
+version: 1.3.2-dev
 
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/dds