mongoose/docs/c-api/http_server.h/mg_parse_http_basic_auth.md

title	decl_name	symbol_kind	signature
mg_parse_http_basic_auth()	mg_parse_http_basic_auth	func	int mg_parse_http_basic_auth(struct mg_str *hdr, char *user, size_t user_len, char *pass, size_t pass_len);

Parses the Authorization: Basic header Returns -1 iif the authorization type is not "Basic" or any other error such as incorrectly encoded base64 user password pair.