Danny Tuppeny
3f5a1bab67
The DAP tests have some debug logging that prints if a request/event takes longer than 10 seconds to arrive. In the case where tests run quickly and the DAP client is torn down, these delays cause the test run to stay alive for 10 sec unnecessarily (and print irrelevant warnings). This changes that code to check periodically instead, and exits early if the client is torn down avoiding both the 10s wait and the spurious warning. Change-Id: Ic07826942e8ae307867820020b30595a42e68d15 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/411680 Reviewed-by: Derek Xu <derekx@google.com> Commit-Queue: Derek Xu <derekx@google.com> Reviewed-by: Srujan Gaddam <srujzs@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());
}