Danny Tuppeny
da8ed2208e
Because we use `nonBlocking`, the stream closing with unflushed data can result in an unhandled exception. Since we're never interested in errors writing to the stream (there's nothing we can do if the output stream is closed, and it happens at the end of every session), we just discard the error. Fixes https://github.com/dart-lang/sdk/issues/61193 Fixes https://github.com/dart-lang/sdk/issues/55685 Fixes https://github.com/dart-lang/sdk/issues/55313 Change-Id: I6e0a332708cd6e8eb3ae8bd60d45c9e117d897a6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/452440 Reviewed-by: Ben Konyi <bkonyi@google.com> Reviewed-by: Helin Shiah <helinx@google.com> Commit-Queue: Helin Shiah <helinx@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());
}