Notes #

• First 0.1.0 release of this package.

Features #

Initial scaffold for 17 higher-level packages including the full RPC stack,

program interaction layers, and the umbrella package. Each package has its pubspec.yaml with correct workspace dependencies, shared analysis_options.yaml, and an empty barrel export file ready for implementation.

Package groups scaffolded:

• RPC Stack: rpc_types (base types), rpc_spec_types, rpc_spec (specification), rpc_api (method definitions), rpc_parsed_types, rpc_transformers (response processing), rpc_transport_http (HTTP transport), rpc (primary client)
• RPC Subscriptions: rpc_subscriptions_api, rpc_subscriptions_channel_websocket, rpc_subscriptions (WebSocket subscription client)
• Programs & Accounts: accounts (fetching/decoding), programs (utilities), program_client_core (base client), sysvars (system variables)
• Transaction Lifecycle: transaction_confirmation (polling/confirmation)
• Umbrella: solana_kit (re-exports all packages for convenience)

Implement RPC subscriptions WebSocket channel package ported from @solana/rpc-subscriptions-channel-websocket.

solana_kit_rpc_subscriptions_channel_websocket (23 tests):

• createWebSocketChannel factory for creating WebSocket RPC subscription channels
• RpcSubscriptionsChannel interface extending DataPublisher with send() method
• AbortSignal / AbortController for clean channel shutdown
• WebSocketChannelConfig with URL, sendBufferHighWatermark, and optional abort signal
• Message forwarding via DataPublisher 'message' channel
• Error publishing on abnormal WebSocket closure (non-1000 codes)
• Integration tests using real HttpServer with WebSocketTransformer

Fixes #

Enhance core SDK packages with additional functionality and tests.

• Codecs core: Enhanced addCodecSizePrefix with additional functionality
• Codecs data structures: Array codec improvements
• Codecs numbers: shortU16 codec enhancements
• Codecs strings: UTF-8 codec improvements
• Keys: Key pair and signatures enhancements
• RPC transport: HTTP transport and WebSocket channel updates
• Transactions: Transaction codec enhancements