# 1.7.7-dev
- Fixed issue where two clients subscribing to the same stream in close succession
  could result in DDS sending multiple `streamListen` requests to the VM service.

# 1.7.6
- Update dependencies.

# 1.7.5
- Add 30 second keep alive period for SSE connections.

# 1.7.4
- Update `package:vm_service` to 6.0.1-nullsafety.0.

# 1.7.3
- Return an RpcException error with code `kServiceDisappeared` if the VM
  service connection disappears with an outstanding forwarded request.

# 1.7.2
- Fixed issue where a null JSON RPC result could be sent if the VM service
  disconnected with a request in flight (see https://github.com/flutter/flutter/issues/74051).

# 1.7.1
- Fixed issue where DartDevelopmentServiceException could have a null message.

# 1.7.0
- Added `package:dds/vm_service_extensions.dart`, which adds DDS functionality to
  `package:vm_service` when imported.
  - Added `onEventWithHistory` method and `onLoggingEventWithHistory`, 
    `onStdoutEventWithHistory`, `onStderrEventWithHistory`, and 
    `onExtensionEventWithHistory` getters.
- Added `getStreamHistory` RPC.

# 1.6.1
- Fixed unhandled `StateError` that could be thrown if the VM service disconnected
  while a request was outstanding.

# 1.6.0
- Added `errorCode` to `DartDevelopmentServiceException` to communicate the
  underlying reason of the failure.

# 1.5.1
- Improve internal error handling for situations with less than graceful
  shutdowns.

# 1.5.0
- Added event caching for `Stdout`, `Stderr`, and `Extension` streams. When a
client subscribes to one of these streams, they will be sent up to 10,000
historical events from the stream.

# 1.4.1
- Fixed issue where `evaluate` and `evaluateInFrame` requests were not being
  forwarded to the VM service properly when no external compilation service
  was registered.

# 1.4.0
- Added `done` property to `DartDevelopmentService`.
- Throw `DartDeveloperServiceException` when shutdown occurs during startup.
- Fixed issue where `StateError` was thrown when DDS was shutdown with pending
  requests.

# 1.3.5

- Fixed issue where clients subscribing to the `Service` stream were not being
  sent `ServiceRegistered` events on connection.

# 1.3.4

- Fixed issue where `isolateId`s were expected to take the form `isolates/123`
  although this is not required by the VM service specification.

# 1.3.3

- Fixed issue where `DartDevelopmentService.sseUri` did not return a URI with a
  `sse` scheme.

# 1.3.2

- Add IPv6 hosting support.
- Fix handling of requests that are outstanding when a client channel is closed.

# 1.3.1

- Fixed issue where an exception could be thrown during startup if the target
  process had an isolate without an associated pause event.

# 1.3.0

- Added support for SSE connections from web-based clients.

# 1.2.4

- Fixed another issue where a `StateError` could be raised within `DartDevelopmentService`
  when a client has disconnected after the target VM service has shutdown.

# 1.2.3

- Fixed issue where DDS was expecting a client provided implementation of
`compileExpression` to return a response with two layers of `response` objects.

# 1.2.2

- Fixed issue where a `StateError` could be raised within `DartDevelopmentService`
  when a client has disconnected after the target VM service has shutdown.

# 1.2.1

- Fixed issue where `evaluate` and `evaluateInFrame` were not invoking client
  provided implementations of `compileExpression`.

# 1.2.0

- Fixed issue where forwarding requests with no RPC parameters would return an
  RPC error.

# 1.1.0

- Added `getDartDevelopmentServiceVersion` RPC.
- Added DDS protocol to VM service `getSupportedProtocols` response.
- Added example/example.dart.
- Allow for JSON-RPC 2.0 requests which are missing the `jsonrpc` parameter.

# 1.0.0

- Initial release.