All header transformation code from h2mux has been consolidated in the connection package since it's used by both h2mux and http2 logic.
Exported headers used by proxying between edge and cloudflared so then can be shared by tunnel service on the edge.
Moved access-related headers to corresponding packages that have the code that sets/uses these headers.
Removed tunnel hostname tracking from h2mux since it wasn't used by anything. We will continue to set the tunnel hostname header from the edge for backward compatibilty, but it's no longer used by cloudflared.
Move bastion-related logic into carrier package, untangled dependencies between carrier, origin, and websocket packages.
benchmark old ns/op new ns/op delta
BenchmarkSingleStreamLargeResponseBody-8 17786594 12163494 -31.61%
benchmark old allocs new allocs delta
BenchmarkSingleStreamLargeResponseBody-8 17086 15869 -7.12%
benchmark old bytes new bytes delta
BenchmarkSingleStreamLargeResponseBody-8 58215169 21604391 -62.89%