nx_http_client_post_test.nx

nx_http_client_post_test.nx -- KAT for nx_http_client_build_request_post. Asserts the wire-byte output for a representative ACME-style POST matches an exact RFC 7230 §3 reference string. Body is a small JSON-ish payload; content-type pinned to application/jose+json. Reference (header line endings shown as visible \r\n): POST /acme/new-account HTTP/1.1\r\n Host: acme-staging-v02.api.letsencrypt.org\r\n Content-Type: application/jose+json\r\n Content-Length: 11\r\n Connection: close\r\n \r\n {"hi":"x"}\n Total bytes (header up to "\r\n\r\n") + body 11 bytes.