You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cloud SandboxArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What
When Claude Code runs in a cloud sandbox, which is an isolated environment, its network traffic goes through a proxy. That proxy changed in several ways:
It can now use a local relay connection.
After a relay failure it logs a notice that it is holding off before trying again.
It counts certificate authority (CA) blocks it cut or could not judge. CA certificates are what programs use to decide which connections to trust.
It writes the CA certificate store for Java programs more strictly.
A file upload that fails with a transport error is sent once more on a fresh connection.
Why
Networking inside cloud sandboxes should fail less often, and a single dropped upload no longer fails outright.