The gateway answered every non-page request without a session with a login
redirect, which fetch and EventSource cannot follow across origins, so polls,
forms and streams failed with errors that said nothing about the session. It
now answers anything that does not ask for text/html with a 401 and a
WWW-Authenticate header, and the swarm UI reloads on that 401, from a wrapped
fetch (one place for every call) and from a probe after a stream dies. A second
reload within ten seconds is skipped so a page that keeps answering 401 cannot
loop. The proxy test and the docs follow.
The cache aged the token on Instant, which does not advance while the host
is suspended, so a resumed host kept presenting an expired token. Age it on
the wall clock, and drop the token when the queue refuses it.
the agent's own root unit reads swarm/agents/<agent>/backend-env into /run and
creates it from backendEnvironmentFile with -cas=0 when the store holds nothing.
the shared agent policy gains create (not update) on that one leaf. the harness
and the subagent daemon load the old file first and the fetched one after it.
for each agent the hive looks up its record in agent-closures, fetches the closure's narinfo from the cache with the pull token and checks that a signature by the cache's public key covers it. the result is a log line and the gauge hyperhive.agent.closure_pullable, with a reason label when it is 0. nothing is downloaded and deploys still build locally. part 3 of 3: the probe needs the cache facts and the closure read grant from parts 1 and 2.
hive-c0re reads its cache facts from the store every five minutes and writes /run/hyperhive/attic/{netrc,substituter,public-key}, each 0600. it accepts only an https url, so the pull token never travels in clear. hives get a read grant on the agent-closures bucket, and swarm-queue-client a reader for it. part 2 of 3: nothing uses the files or the reader until the probe lands.
the in-swarm cache stores its address, name and public key beside its tokens, create-only. swarm-controller copies the four cache facts to swarm/hives/<hive>/attic/* every five minutes, with read on the sources and write on the copies. part 1 of 3: nothing reads the copies until the hive reader and probe land.
