New subject: [kamailio/kamailio] usage of transport=wss inside of Kamailio for WSS connections, e.g. in path module (Issue #4168)

7 Mar 2025


      ChristianBergerSipgate created an issue (kamailio/kamailio#4168)
We think we have found a potential bug in the path module.
When we call `add_path_received()` we get the following for WSS connections:
`Path: sip:217.10.77.242;lr;received=sip:217.10.69.93:42612%3Btransport%3Dws`
We think there should be a `transport%3Dwss` appended instead of ws.
We have looked a bit into the code and think that this is caused by the following definition:
```
in modules/path/path.c
const static char *proto_strings[] = {
                [PROTO_TCP] = "%3Btransport%3Dtcp",
                [PROTO_TLS] = "%3Btransport%3Dtls",
                [PROTO_SCTP] = "%3Btransport%3Dsctp",
                [PROTO_WS] = "%3Btransport%3Dws",
                [PROTO_WSS] = "%3Btransport%3Dws",
};
```
We think that on the last line, it should read 
`                [PROTO_WSS] = "%3Btransport%3Dwss",`
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[kamailio/kamailio] path: add_path_received() appends transport=ws instead of transport=wss (Issue #4168)