Nate Bosch
3b6aeb43fa
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>
A package used to spawn the Dart Developer Service (DDS), which is used to communicate with a Dart VM Service instance and provide extended functionality to the core VM Service Protocol.
Functionality
Existing VM Service clients can issue both HTTP, websocket, and SSE requests to a running DDS instance as if it were an instance of the VM Service itself. If a request corresponds to an RPC defined in the VM Service Protocol, DDS will forward the request and return the response from the VM Service. Requests corresponding to an RPC defined in the DDS Protocol will be handled directly by the DDS instance.
SSE Support
For certain web clients it may be preferrable or required to communicate with DDS using server-sent events (SSE). DDS has a SSE handler listening for requests on /$debugHandler.
SSE and package:vm_service example
import 'package:sse/sse.dart';
import 'package:vm_service/vm_service.dart';
void main() {
// Establish connection with DDS using SSE.
final ddsChannel = SseClient('${ddsUri}\$debugHandler');
// Wait for ddsChannel to be established
await ddsChannel.onOpen.first;
// Initialize VmService using the sink and stream from ddsChannel.
final vmService = VmService(
ddsChannel.stream,
(e) => ddsChannel.sink.add(e),
);
// You're ready to query DDS and the VM service!
print(await vmService.getVersion());
}