adapter_websocket

Bug Fixes

• Connection: Fixed a race in WebSocketChannelAdapter.connect() where a stale connection's callbacks could overwrite the state of a newer one, subscriptions leaked across reconnects, and a stalled handshake could leave connect() hanging forever (connection generation counting + timeout now terminates the pending future).
• ACK: Fixed __ack__-pending messages being silently lost on disconnect — pending ACKs are now requeued for redelivery and late ACK frames are consumed instead of leaking into the message stream.
• ACK / Queue: Draining the message queue no longer blocks behind one unacknowledged ACK message (previously up to ackTimeout × maxAckRetries), and failed sends while connected now fall back to the queue instead of being lost.
• Heartbeat: Fixed a race where stop() during an in-flight heartbeat send could re-arm a zombie timeout timer and trigger auto-reconnect after an intentional disconnect.
• Heartbeat: The mechanism now deactivates cleanly after maxMissedHeartbeats (stats no longer report a dead heartbeat as active) and can be restarted after reconnection.
• Reconnection: Fixed disconnections that occurred while a reconnect attempt was in flight being swallowed, which could leave the client permanently offline; superseded attempts can no longer report success or cancel a newer cycle. Also fixed an exponent overflow crash in exponential backoff with unlimited retries.
• Topics: ChannelManager.route() no longer throws on malformed envelopes from the server (non-string topic/event values are now guarded instead of hardcast).
• Interceptors: The public errorStream now forwards errors through the error interceptor chain — returning null from onError actually suppresses the error, matching onSend/onReceive semantics.
• Added WebSocketClient.isReconnecting to distinguish "disconnected" from "automatically reconnecting".

Improvements

• Restored the web platform declaration in pubspec.yaml (a Dart-only registrant via dartPluginClass) so pub.dev correctly shows web support — it had been dropped accidentally in 0.1.7.
• Added a canonical entry point at package:adapter_websocket/adapter_websocket.dart; the old websocket_plugin.dart import remains as a backwards-compatible alias.

Example

• Added a self-driving in-process mock WebSocket server (example/lib/local_mock_websocket_adapter.dart) that answers heartbeat/ACK/topic traffic and broadcasts periodic events with zero network access — switch between Mock (local) and Real server right in the demo UI. Native builds use a real local WebSocket server; web builds use an in-memory transport with identical behaviour.

Tests

• Added 13 regression tests covering all of the above fixes, plus an example integration test exercising the full mock flow (echo, ACK, heartbeat, topics, simulated disconnect → auto-reconnect).
• Made the previously jitter-dependent exponential-backoff test deterministic.

New Features

• WebSocketMessage now has a copyWith() method for convenient object duplication.

Improvements

• ACK: AckManager.sendWithAck() now embeds __ack_id__ directly into the JSON payload so the server can echo it back without out-of-band framing.
• Message Queue: Added useAck flag support; messages that were originally sent with ACK enabled are re-enqueued with the flag preserved and re-sent with ACK on reconnect.
• Channel Manager: ChannelManager now passes a WebSocketMessage (instead of raw data) to the underlying send path, enabling full interceptor and ACK pipeline support for topic messages.
• Reconnection Manager: Infinite-retry configuration (maxReconnectAttempts = 0) is now displayed correctly in connection stats.
• WebSocket Client: Refactored the message stream processing pipeline for clearer separation between raw transport, interceptor chain, and topic dispatch.
• WebSocketConfig.copyWith(): Supports explicit null clearing for optional fields (e.g. httpClient, expectedPongMessagePattern) so callers can reset a field without creating a whole new config.
• README: Extended cross-platform availability table to document which configuration fields are supported on Web vs. native.

Build

• Updated package version to 0.1.7.
• Removed resource files that are not supported on the Web platform from the asset bundle.

Bug Fixes

• Fixed Swift Package Manager (SPM) support for iOS and macOS: added Package.swift at ios/adapter_websocket/Package.swift and macos/adapter_websocket/Package.swift, which is the path Flutter's SPM integration actually resolves. The previously existing root-level ios/Package.swift and macos/Package.swift were not found by the pub.dev validator or Flutter tooling.

Improvements

• Explicitly declared the web platform in pubspec.yaml (pluginClass: none), confirming that web WebSocket support is handled entirely in Dart via web_socket_channel with no native plugin class required.

Improvements

• Removed unused plugin scaffold files (adapter_websocket_web.dart, untitled5_method_channel.dart, websocket_platform_interface.dart) that were generated by flutter create --template=plugin but never wired into actual functionality.
• Removed corresponding unused dependencies: flutter_web_plugins, plugin_platform_interface.
• Removed the empty web plugin class registration from pubspec.yaml; web WebSocket support continues to work through web_socket_channel.

Improvements

• Refactored WebSocketChannelAdapter internals to fully support the WASM platform, removing remaining dart:io dependencies from the connection path via conditional imports.
• Improved CompressionInterceptor reliability on native platforms.
• Added GitHub Pages live demo (automatically deployed on every push to master).

Bug Fixes

• Fixed messages whose content contains the heartbeat string (e.g. JSON payloads that include "ping" or "pong") being incorrectly classified as heartbeat responses.

Improvements

• Refactored example application with additional usage demos and improved UI.
• Added iOS and Dart CI workflows.

New Features

• Interceptor / Middleware — WebSocketInterceptor abstract class and InterceptorChain for inspecting, transforming, or suppressing messages at send and receive time. Ships with a built-in LoggingInterceptor.
• Message Queue (offline buffer) — MessageQueue buffers outgoing messages while the connection is down and automatically flushes them on reconnect. Configurable via enableMessageQueue, maxQueueSize, and messageQueueTimeout.
• ACK Confirmation — AckManager injects a unique __ack_id__ into outgoing messages and waits for server acknowledgement. Supports configurable timeout and automatic retries. Configurable via enableAck, ackTimeout, and maxAckRetries.
• Topic Multiplexing (Channel/Topic) — ChannelManager and WebSocketTopic enable multiple logical channels over a single WebSocket connection using a JSON envelope format ({"topic":"…","event":"…","payload":…}). Access via client.channel('topic:name').
• Compression — CompressionInterceptor transparently gzip-compresses outgoing messages above a configurable byte threshold and decompresses incoming messages. Available on native platforms (not web).
• Connection Pool — WebSocketPool manages multiple WebSocketClient instances across different server endpoints with round-robin, random, or least-connections load balancing. Supports broadcast() to all connected clients.

Improvements

• WebSocketConfig.copyWith() now includes expectedPongMessagePattern.
• WebSocketClient message pipeline runs through the interceptor chain before sending and after receiving.
• WebSocketClient.send() and sendMessage() enqueue messages when disconnected (if enableMessageQueue is enabled) instead of immediately throwing.
• Queue is drained automatically on reconnect success (both from connect() and from the reconnection manager).
• connectionStats now includes messageQueue, ack, channels, and interceptors fields.

Bug Fixes

• Fixed _isHeartbeatMessage() null dereference when only expectedPongMessage was set.
• Fixed copyWith() dropping expectedPongMessagePattern.
• Fixed heartbeat pong waiting logic ignoring expectedPongMessagePattern.
• Fixed handleIncomingMessage() not recognising pong responses matched by expectedPongMessagePattern.
• Fixed WebSocketClient._publishStats() not being called after initiating reconnection from heartbeat timeout.
• Fixed shadowed variable in reconnection_manager_test.dart causing NullPointerException.
• Fixed ReconnectionManager timer leak between tests by adding tearDown.
• Fixed reconnection_manager_test.dart "max attempts" test not waiting long enough for exponential backoff.
• Fixed websocket_plugin_test.dart unstable-connection test relying on 30-second instability timer.

• TODO: Describe initial release.