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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.229

Gateway streaming keeps connections alive with pings

You'll notice
Useful3 Signal2
Gateway

Long streaming requests through the local gateway send keep-alive pings so proxies don't drop them.

What

Streaming responses through the local gateway now emit a periodic event: ping frame when the upstream has gone quiet, so idle proxies and load balancers are less likely to drop a long request. The interval defaults to 15000 ms.

Details
  • The frame carries the payload line data: {"type": "ping"}.
  • No such frame existed in the previous build.
Evidence

data: {"type": "ping"}

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.229 →