Strange Lockups Occurring, Sometimes

It's hard to describe this one, but I was running into situations tonight where the application would lock up when PATCHing a resource. I'm not sure if this was intermittent downtime on Apple's part, but it's a sign for me that either Cider or asc-go's timeout policy isn't aggressive enough. I need to do better stress testing as a client on these APIs, set tighter timeouts, and/or investigate channel blocking issues in Cider or asc-go.

Start by reproducing the intermittent lockup while PATCHing a resource, then run stress tests against the client APIs. Inspect the timeout policies and possible channel blocking in Cider or asc-go. Done means the lockup is characterized and the relevant timeout or blocking behavior has a verified resolution.

Written by the indexing model from the issue text.