mongoose/docs/c-api/dns.h/mg_dns_uncompress_name.md

title	decl_name	symbol_kind	signature
mg_dns_uncompress_name()	mg_dns_uncompress_name	func	size_t mg_dns_uncompress_name(struct mg_dns_message *msg, struct mg_str *name, char *dst, int dst_len);

Uncompress a DNS compressed name.

The containing dns message is required because the compressed encoding and reference suffixes present elsewhere in the packet.

If name is less than dst_len characters long, the remainder of dst is terminated with \0' characters. Otherwise, dst` is not *terminated.

If dst_len is 0 dst can be NULL. Return the uncompressed name length.