nx_dns_resolve_a_record.nx

nx_dns_resolve_a_record.nx -- hostname → packed IPv4 glue function. module: nishi-core.net.dns_resolve_a depends: nishi-core.net.dns, nishi-core.io.syscalls disk_kb: 3 capability: CORE_NET license_tier: PUBLIC_NISHI_SUBSTRATE genealogy_id: rfc_1035_dns_a_record + nishi_substrate_phase_8_unblock_2026 The TINY GLUE FUNCTION that unblocks the entire NX-INGEST stack per cardinal [[feedback-build-the-system-not-manual-output]]. Composes existing shipped substrate (nx_dns parsers + sys_socket) into the hostname-to-packed-IPv4 function that nx_https_client has been waiting for. Before this primitive: every NX-INGEST adapter honest-stubs at the network-fetch line because caller has to pass packed IPv4 manually. After this primitive: nx_https_client wires through; adapters run against real upstreams. ===== Algorithm ================================================== 1. Construct DNS A-record query packet via existing nx_dns primitives (already shipped in nx_dns.nx per browser arc) 2. Send query via UDP to resolver (1.1.1.1 / 8.8.8.8 / configured) 3. Receive response 4. Parse first A-record IPv4 via existing nx_dns parse primitives 5. Return packed-i64 IPv4 (or 0 on failure) Sovereign-egress posture per [[feedback-ethical-jurisdiction-routed- egress]]: configurable resolver IP; defaults to local /etc/resolv .conf parse if available, else 1.1.1.1.