[sr-dev] [kamailio/kamailio] sanity() test passes on invalid uri (#1289)

K master sanity() test passes URI hostpart that contains ` (back quote) character and possibly other invalid hostpart characters:

Config:

modparam("sanity", "default_checks", 1024) /* URI checks */ modparam("sanity", "uri_checks", 3) /* RURI, From */

xlog("L_INFO", "Checking $ru\n"); if (!sanity_check()) xlog("L_INFO", "Check failed\n"); else xlog("L_INFO", "Check passed\n");

Syslog:

Oct 27 17:17:38 lohi /usr/bin/sip-proxy[31946]: INFO: Checking sip:jh at te`st.fi Oct 27 17:17:38 lohi /usr/bin/sip-proxy[31946]: INFO: Check passed

According to RFC3261:

hostname = *( domainlabel "." ) toplabel [ "." ] domainlabel = alphanum / alphanum *( alphanum / "-" ) alphanum