Client.sendRequest() now throws a StateError if the client is closed while the request is in-flight. This avoids dangling Futures that will never be completed.
Both Client.sendRequest() and Client.sendNotification() now throw StateErrors if they're called after the client is closed.
StateError could be top-leveled if Peer.close() was called before the underlying channel closed.Breaking change: all constructors now take a StreamChannel rather than a Stream/StreamSink pair.
Client.sendRequest() and Client.sendNotification() no longer throw StateErrors after the connection has been closed but before Client.close() has been called.
The various close() methods may now be called before their corresponding listen() methods.
The various close() methods now wait on the result of closing the underlying StreamSink. Be aware that in some circumstances StreamControllers' Sink.close() futures may never complete.
Add Client.isClosed and Server.isClosed, which make it possible to synchronously determine whether the connection is open. In particular, this makes it possible to reliably tell whether it's safe to call Client.sendRequest.
Fix a race condition in Server where a StateError could be thrown if the connection was closed in the middle of handling a request.
Improve stack traces for error responses.
done getter to Client, Server, and Peer.Add a Client class for communicating with external JSON-RPC 2.0 servers.
Add a Peer class that's both a Client and a Server.
Remove Server.handleRequest() and Server.parseRequest(). Instead, new Server() takes a Stream and a StreamSink and uses those behind-the-scenes for its communication.
Add Server.listen(), which causes the server to begin listening to the underlying request stream.
Add Server.close(), which closes the underlying request stream and response sink.
stack_trace.RpcException when not a map.