Hi PV cookbook says $proto returns values in uppercase¹, but I am getting lower case values back. PV module uses pv_get_proto() in pv_export_t structure: --- static pv_export_t mod_pvs[] = { . . . {{"proto", (sizeof("proto")-1)}, PVT_OTHER, pv_get_proto, 0, 0, 0, 0, 0}, --- Further on, 3rd parameter (vtype) in call to get_valid_proto()² asks for lowercase results: --- int pv_get_proto(struct sip_msg *msg, pv_param_t *param, pv_value_t *res) . . . if (get_valid_proto_string(msg->rcv.proto, 0, 0, &s)<0) { --- Should I update PV module or cookbook? I am running 4.2 from git: --- version: kamailio 4.2.4 (x86_64/linux) a23331 --- [1] UDP, TCP, TLS, SCTP, WS, WSS http://kamailio.org/wiki/cookbooks/devel/pseudovariables#pr_-_protocol_of_r… [2] https://github.com/kamailio/kamailio/blob/master/modules/pv/pv_core.c#L1080