The logic around transmission session handling was f*cked, this fixes
that.
We use an IORef instead of an MVar, since we want to unconditionally
write the new value. Even if multiple requests race, I *hope* that
transmission returns the same session id, otherwise we might get a
request loop. But it should be fine. (The semantics is not nicely
documented in the RPC docs.)
Additionally, log the session ids in the requests.
Change-Id: Id7d33f8cb74cb349e502331cad5eb5abe8a624cd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11673
Autosubmit: Profpatsch <mail@profpatsch.de>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
2ac89bb480
