The buffer size was big to support a compression feature that we don't
use anymore.
As such, we can now reduce this and be more efficient with memory usage.
Setting the body to nil was rendering cloudflared to crashing with
a SIGSEGV in the odd case where the hostname accessed maps to a
TCP origin (e.g. SSH/RDP/...) but the eyeball sends a plain HTTP
request that does not go through cloudflared access (thus not wrapped
in websocket as it should).
Instead, QUIC transport now sets http.noBody in that condition, which
deals with the situation gracefully.
Sudarsan Reddy
João Oliveirinha
Devin Carr
Nuno Diegues
cthuang