just for robustness; neither git nor got-fetch-http are expected to use other methods except for GET and POST.

based on a draft by stsp; git(1) manages to clone from it.

Previously it would only exit the loop when reading failed. ok tobhe@

ok stsp

ok stsp

code more portable supports almost everything we need out of the box. pledge needs the rpath promise because of libtls. This was technically also the case with the old API but we didn't actually enable pledge thanks to DEBUG_HTTP. The synchronous bufio wrappers should probably move to lib/bufio.c in the future. ok and feedback from op@

ok op@

ok stsp

called in a loop, if we don't clear them we might keep on looping. ok stsp@

We aren't planning to support sending anyway. ok stsp@

Currently we only support the smart protocol with a limited feature set. ok stsp@ tobhe@

ok thomas_adam