What is the OpenClaw undici socket leak?

The gateway accumulates leaked IPv6 sockets to api.anthropic.com on every streamed API call because the SDK SSE parser does not fully drain or cancel the stream.

How many sockets does the gateway leak?

11,507 leaked ESTABLISHED IPv6 sockets after 5 hours of normal cron-driven agent turns.

What happens when the socket leak reaches the fd limit?

Spawn EBADF errors occur. All exec tool calls fail, breaking email-scan and other crons that shell out.

Is there a workaround for the socket leak?

Periodic gateway restart with an hourly fd watchdog that auto-restarts when fd count exceeds 2000.

What causes the Anthropic socket leak?

The Anthropic SDK SSE parser sees message_stop and returns without fully draining to done:true or calling body.cancel().

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clawsmith.com/signal/openclaw-gateway-undici-socket-leak-11507-anthropic

⚠ IssueWide OpenLive

OpenClaw Gateway Leaks 11,507 Undici Sockets on Anthropic API Streams Until All Exec Tools Fail

The openclaw-gateway process accumulates leaked IPv6 ESTABLISHED sockets to api.anthropic.com on every streamed API call. After 5 hours of normal cron-driven agent turns, 11,507 leaked sockets observed. Eventually hits fd limit causing spawn EBADF errors, breaking all exec tool calls.

Product Idea from this Signal

A process supervisor that keeps the OpenClaw gateway alive through crashes, silent restarts, and update-induced failures

729 ▲

The OpenClaw gateway silently restarts every 50 minutes killing all active ACP sessions. Telegram integration crashes with AbortError every 20-30 minutes. The doctor --fix command hits a stack overflow and generates thousands of clobbered backup files instead of recovering. After updates, the gateway fails to restart because npm overwrites dist/ while the process is still running. There is no reliable supervision layer that keeps the gateway running, detects crash loops, and recovers gracefully. This tool wraps the gateway in a battle-tested supervisor that handles all known failure modes and keeps your agents online.

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