Sam Rawlins
1739cc6d89
This is similar to BODY_MIGHT_COMPLETE_NORMALLY (the static error), BODY_MIGHT_COMPLETE_NORMALLY_NULLABLE (the Hint for nullable return types), and RETURN_OF_INVALID_TYPE_FROM_CATCH_ERROR, combining the rules from each. https://github.com/dart-lang/sdk/issues/49215 (but maybe doesn't close, if the core issue is the VM issue) Change-Id: I9a010e5a3f0f88abfdab479339e5e76759ae9d92 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/247863 Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@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 preferable or required to communicate with DDS using server-sent events (SSE). DDS has an 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());
}