ChristianBergerSipgate created an issue (kamailio/kamailio#4167)

Hi,

we have found a potential bug. The pseudo variables return null for WSS connections.

Example config: `xlog("L_INFO", "<mainLogic> REGISTER: TLS or WSS detected: fU=$fU tls_version=$tls_version tls_cipher_info=$tls_cipher_info ua=$ua\n");`

Log output: `Mar 7 08:37:28 sip-tcploadbalancer01 /usr/sbin/kamailio[1268940]: { "level": "ERROR", "module": "tls", "file": "tls_select.c", "line": 131, "function": "get_cur_connection", "message": "Transport protocol is not TLS (bug in config)\n" } Mar 7 08:37:28 sip-tcploadbalancer01 /usr/sbin/kamailio[1268940]: { "level": "INFO", "module": "tls", "file": "tls_select.c", "line": 310, "function": "get_version", "message": "TLS connection not found in select_version\n" } Mar 7 08:37:28 sip-tcploadbalancer01 /usr/sbin/kamailio[1268940]: { "level": "ERROR", "module": "tls", "file": "tls_select.c", "line": 131, "function": "get_cur_connection", "message": "Transport protocol is not TLS (bug in config)\n" } Mar 7 08:37:28 sip-tcploadbalancer01 /usr/sbin/kamailio[1268940]: { "level": "INFO", "module": "tls", "file": "tls_select.c", "line": 201, "function": "get_cipher", "message": "TLS connection not found in select_cipher\n" } Mar 7 08:37:28 sip-tcploadbalancer01 /usr/sbin/kamailio[1268940]: { "level": "INFO", "module": "xlog", "file": "xlog.c", "line": 278, "function": "", "message": "<mainLogic> REGISTER: TLS or WSS detected: fU=1125411e0 tls_version=<null> tls_cipher_info=<null> ua=webphone\n" }`

As you can see both tls_version and tls_cipher_info return <null> even though the underlying connection is via WSS.

We have looked into it, and it seems like `get_cur_connection` in `modules/tls/tls_select.c` only checks for TLS, but not WSS.

``` struct tcp_connection *get_cur_connection(struct sip_msg *msg) { struct tcp_connection *c;

if(_tls_pv_con != 0) return _tls_pv_con;

if(msg->rcv.proto != PROTO_TLS) { ERR("Transport protocol is not TLS (bug in config)\n"); return 0; }

c = tcpconn_get(msg->rcv.proto_reserved1, 0, 0, 0, cfg_get(tls, tls_cfg, con_lifetime)); if(c && c->type != PROTO_TLS) { ERR("Connection found but is not TLS\n"); tcpconn_put(c); return 0; } return c; } ```

We think that checking for `PROTO_WSS` might solve the issue.