DnsResolve_4_vec

Description

Spec-based overload (vec form). Accepts a single "host:port" string and appends every matching SocketAddr to out.

Tries SocketAddrParse first (numeric IPv4 127.0.0.1:8080 and bracketed IPv6 [::1]:8080 short-circuit here with no network I/O). Otherwise splits spec on the last : to get host + port and dispatches to DnsResolve_5.

Success

Returns true. out has at least one new entry.

Failure

Returns false. Logs the failure cause.

Usage example (Cross-references)