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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.227 ·

Remote-session connection learns liveness probes and reconnect resync

Remote sessions can answer liveness probes and resync after a dropped connection.

Under the hood In Development
JSON All of v2.1.227
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
In DevelopmentKind: in v2.1.227,
In DevelopmentSection of the release
What

The long-lived connection to remote sessions can now tell the server it accepts liveness probes, report the heartbeat interval it is using, and respond to a probe frame. After a dropped connection it runs a resync, and it will not accept a server-suggested heartbeat interval that outlives the current auth token.

Details
  • Turned on by an advertiseLivenessProbeSupport option on the transport; nothing in this build was found to set it.
  • Probes are logged as cli_sse_liveness_probe_received; unrecognised transient frame types log cli_sse_unexpected_ephemeral_type.
  • A heartbeat is forced immediately after reconnect, spaced for probes.
Evidence

cli_sse_liveness_probe_received

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.227 →

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