refactor(transport): split transport.ts for separation of concerns #765
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3 tasks
grypez
approved these changes
Jan 26, 2026
Move transport-related constants to constants.ts: - DEFAULT_MAX_CONCURRENT_CONNECTIONS - DEFAULT_MAX_MESSAGE_SIZE_BYTES - DEFAULT_CLEANUP_INTERVAL_MS - DEFAULT_STALE_PEER_TIMEOUT_MS - DEFAULT_WRITE_TIMEOUT_MS - SCTP_USER_INITIATED_ABORT Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Move peer state management to dedicated PeerStateManager class: - Encapsulates peerStates, lastConnectionTime, intentionallyClosed - Provides methods: getState, countActiveConnections, updateConnectionTime - Handles intentional close tracking (mark, check, clear) - Location hints management (addLocationHints) - Stale peer detection and removal Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Move the writeWithTimeout utility function to a dedicated channel-utils.ts module for better separation of concerns. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Create factory functions for validators: - makeMessageSizeValidator: validates message size limits - makeConnectionLimitChecker: validates connection limits Both use ResourceLimitError with structured data for error handling. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add factory function for creating error logging functions with peer context, reducing boilerplate in transport.ts. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Move handleConnectionLoss and attemptReconnection to reconnection-lifecycle.ts: - Creates makeReconnectionLifecycle factory function - Uses holder pattern to break circular dependency - Encapsulates reconnection orchestration logic This significantly reduces transport.ts complexity while keeping the reconnection logic cohesive and testable. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add comprehensive test coverage for the newly extracted modules: - validators.test.ts: Tests for message size and connection limit validators - channel-utils.test.ts: Tests for error logging and writeWithTimeout - peer-state-manager.test.ts: Tests for PeerStateManager class - reconnection-lifecycle.test.ts: Tests for reconnection lifecycle functions Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
constants.tsfilePeerStateManagerclass for peer state managementwriteWithTimeoutandmakeErrorLoggertochannel-utils.tsmakeMessageSizeValidatorandmakeConnectionLimitCheckertovalidators.tsreconnection-lifecycle.tsThis reduces
transport.tsfrom 784 to 521 lines (~33% reduction) while improving testability and maintainability.Test plan
🤖 Generated with Claude Code
Note
Splits transport responsibilities into focused modules to improve testability and maintainability while preserving behavior.
constants.ts,channel-utils.ts(makeErrorLogger,writeWithTimeout),peer-state-manager.ts,validators.ts(message size/connection limit), andreconnection-lifecycle.tstransport.tsto use these modules: centralized timeouts/limits, peer state tracking, reconnection orchestration, and error logging; removes duplicated inline logicWritten by Cursor Bugbot for commit 24cc1f6. This will update automatically on new commits. Configure here.