Chingjun Lau
b08ab6541a
The DAP spec[1] does not specify what should happen when showUser is not specified, and VSCode chooses to default it to true[2][3]. This is inconsistent with some other tools which uses false as the default value[4]. Always pass `showTrue: true` to make it consistent in different systems that use DAP, and be compatible with VSCode. [1]: https://microsoft.github.io/debug-adapter-protocol/specification#message [2]: https://github.com/microsoft/vscode/blob/main/src/vs/workbench/contrib/debug/browser/debugService.ts#L631 [3]: https://github.com/microsoft/vscode/issues/128484 [4]: https://github.com/google/go-dap/issues/87 Change-Id: I8e0147044060dfdbb23c69029ca9708d578844bc Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/339741 Commit-Queue: Helin Shiah <helinx@google.com> Reviewed-by: Helin Shiah <helinx@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 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());
}