grpc-dart

• Forward internal GrpcError on when throwing while sending a request.
• Add support for proxies, see #33.
• Remove canceled ServerHandlers from tracking list.
• Fix regression on fetching the remote address of a closed socket.

• Add const constructor to GrpcError fixing #606.
• Make GrpcError non-final to allow implementations.
• Only send keepalive pings on open connections.
• Fix interop tests.

• ChannelOptions now exposes connectTimeout, which is used on the
  socket connect. This is used to specify the maximum allowed time to wait
  for a connection to be established. If connectTime is longer than the system
  level timeout duration, a timeout may occur sooner than specified in
  connectTimeout. On timeout, a SocketException is thrown.
• Require Dart 2.17 or greater.
• Fix issue #51, add support for custom error handling.
• Expose client IP address to server
• Add a channelShutdownHandler argument to ClientChannel and the subclasses.
  This callback can be used to react to channel shutdown or termination.
• Export the Code protobuf enum from the grpc.dart library.
• Require Dart 3.0.0 or greater.

• ChannelOptions now exposes connectTimeout, which is used on the
  socket connect. This is used to specify the maximum allowed time to wait
  for a connection to be established. If connectTime is longer than the system
  level timeout duration, a timeout may occur sooner than specified in
  connectTimeout. On timeout, a SocketException is thrown.
• Require Dart 2.17 or greater.
• Fix issue #51, add support for custom error handling.
• Expose client IP address to server
• Add a channelShutdownHandler argument to ClientChannel and the subclasses.
  This callback can be used to react to channel shutdown or termination.
• Export the Code protobuf enum from the grpc.dart library.
• Require Dart 3.0.0 or greater.

• Expose a stream for connection state changes on ClientChannel to address
  #428.
  This allows users to react to state changes in the connection.
• Fix #576: set default
  :authority value for UDS connections to localhost instead of using
  UDS path. Using path triggers checks in HTTP2 servers which
  attempt to validate :authority value.

• Fix compilation on the Web with DDC.

• Migrate library and tests to null safety.
• Require Dart 2.12 or greater.

• Require package:googleapis_auth ^1.1.0
• Fix issues #421 and #458. Validate responses according to gRPC/gRPC-Web protocol specifications: require 200 HTTP status and a supported Content-Type header to be present, as well
  as grpc-status: 0 header. When handling malformed responses make effort to translate HTTP statuses into gRPC statuses.
• Add GrpcOrGrpcWebClientChannel which uses gRPC on all platforms except web, on which it uses gRPC-web.
• GrpcError now exposes response trailers via GrpcError.trailers.

• Added support for compression/decompression, which can be configured through
  ChannelOptions constructor's codecRegistry parameter or adding the
  grpc-accept-encoding to metadata parameter of CallOptions on the client
  side and codecRegistry parameter to Server on the server side.
  Outgoing rpc can be compressed using the compression parameter on the
  CallOptions.
• Fix issue #206. Prevent an
  exception to be thrown when a web connection stream is closed.
• Add XHR raw response to the GrpcError for a better debugging
  (PR #423).

Note: this is the last release supporting SDK < 2.12. Next release will
be nullsafe and thus require SDK >= 2.12.

• Added support for client interceptors, which can be configured through
  Client constructor's interceptors parameter. Interceptors will be
  executed by Client.$createStreamingCall and Client.$createUnaryCall.
  Using interceptors requires regenerating client stubs using version 19.2.0 or
  newer of protobuf compiler plugin.
• Client.$createCall is deprecated because it does not invoke client
  interceptors.
• Fix issue #380 causing
  incorrect duplicated headers in gRPC-Web requests.
• Change minimum required Dart SDK to 2.8 to enable access to Unix domain sockets.
• Add support for Unix domain sockets in Socket.serve and ClientChannel.
• Fix issue #331 causing
  an exception in GrpcWebClientChannel.terminate().

2.7.0

• Added decoding/parsing of grpc-status-details-bin to pass all response
  exception details to the GrpcError thrown in Dart, via
  #349.
• Dart SDK constraint is bumped to >=2.3.0 <3.0.0 due to language version
  in the generated protobuf code.

2.6.0

• Create gRPC servers and clients with [Server|Client]TransportConnnection.
  This allows callers to propvide their own transport configuration, such
  as their own implementation of streams and sinks instead of sockets.

2.5.0

• Expose a validateClient method for server credentials so gRPC server
  users may know when clients are loopback addresses.

2.4.1

• Plumb stacktraces through request / response stream error handlers.
• Catch and forward any errors decoding the response.

2.4.0

• Add the ability to bypass CORS preflight requests.

• Fixes for supporting Dart 2.

• Moved TLS credentials for server into a separate class.
• Added support for specifying the address for the server, and support for serving on an ephemeral port.

• Split out TLS credentials to a separate class.

• Added authentication metadata providers, optimized for use with Google Cloud.
• Added service URI to metadata provider API, needed for Json Web Token generation.
• Added authenticated cloud-to-prod interoperability tests.
• Refactored connection logic to throw initial connection errors early.

• Updated generated code in examples using latest protoc compiler plugin.
• Dart 2.0 fixes.
• Changed license to Apache 2.0 to match grpc organization.

• Implemented support for per-RPC metadata providers. This can be used for authentication providers which may need to obtain or refresh a token before the RPC is sent.

• Core gRPC functionality is implemented and passes gRPC compliance tests.

The API is shaping up, but may still change as more advanced features are implemented.