[asterisk-bugs] [JIRA] (ASTERISK-26824) res_pjsip_transport_websocket: IPv6 does not work

[Joshua Colp (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=235505#comment-235505 ] 

Joshua Colp commented on ASTERISK-26824:
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The underlying issue here is that the pjsip_transport_register_type function does not support IPv6 types so an IPv6 capable WebSocket transport can be registered but can not be found. As a result when transport selection occurs it can't find the transport and fails. This will require a modification to that function to properly support IPv6 transport type registrations. Once done no other part of PJSIP would need to be modified.

> res_pjsip_transport_websocket: IPv6 does not work
> -------------------------------------------------
>
>                 Key: ASTERISK-26824
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26824
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_transport_websocket
>    Affects Versions: 14.3.0
>         Environment: linux x64
>            Reporter: Jørgen H
>
> The websocket code registers a transport for using 
> pjsip_transport_register_type().
> This does usually get a type value of 10 (based on index of transport_names array in pjsip).
> When a websocket-connection is established using ipv6, the 
> pjsip_transport_type_e transport type gets set to 10 + 128(PJSIP_TRANSPORT_IPV6) due to this pjsip-patch: https://trac.pjsip.org/repos/changeset/2746
> The code for retrieving the trandsport will fail since there is no transport with type 138, only 10, and asterisk will crash.
> There is also a second problem with transport_create() in res/res_pjsip_transport_websocket.c :
> The newtransport->transport.key.rem_addr.addr.sa_family is always set to pj_AF_INET() even in ipv6-mode. This will cause code using sockaddrs to not be able to connect to ipv6 ips because the underlying code will create an AF_INET socket instead of AF_INET6.
> I commited a change for this in the other wss cleanup ticket https://gerrit.asterisk.org/#/c/4972/5/res/res_pjsip_transport_websocket.c since it is an easy fix.



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