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);

Uncompresses a DNS compressed name.

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

If the 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. Returns the uncompressed name length.