Problem with "407 Proxy Authorization Required" in IMS: Missing "Authentication domain"

[segalion@xxxxxxxxx (segalion)]

I was trying pjsua (1.4.5) with an IMS system, and I have a problem making
outgoing calls, because IMS responds with 407 Proxy Authorization Required:

[extract from wireshark inside 407 Proxy Authorization Required IMS response
packet]
        Proxy-Authenticate: Digest realm="mydomain.net",domain="sip:
mydomain.net
",nonce="c803a53ff76b7e11d8615f0015adc4e2",stale=false,qop="auth",algorithm=MD5
            Authentication Scheme: Digest
            Realm: "mydomain.net"
            Authentication Domain: "sip:domain.net"
            Nonce Value: "c803a53ff76b7e11d8615f0015adc4e2"
            Stale Flag: false
            QOP: "auth"
            Algorithm: MD5

and pjsua make the second invite with proper MD5 authentication, but without
"Authentication domain" field:
[extract from wireshark pjsua Invite with MD5 auth]

        Authorization: Digest username="segalion at mydomain.es", realm="
mydomain.net", nonce="",
uri="sip:999999999 at mydomain.es<sip%3A999999999 at mydomain.es>",
response=""
            Authentication Scheme: Digest
            Username: "segalion at mydomain.es"
            Realm: "mydomain.net"
            Nonce Value: ""
            Authentication URI:
"sip:999999999 at mydomain.es<sip%3A999999999 at mydomain.es>
"
            Digest Authentication Response: ""
        k: replaces, 100rel, timer, norefersub
        x: 1800
        Min-SE: 90
        User-Agent: PJSUA v1.4.5/i686-pc-mingw32
        [truncated] Proxy-Authorization: Digest username="
segalion at mydomain.es", realm="mydomain.net",
nonce="c803a53ff76b7e11d8615f0015adc4e2",
uri="sip:999999999 at mydomain.es<sip%3A999999999 at mydomain.es>",
response="9bd8fc0a1488f95f51df5aff69fc3c4a", algorithm=M
            Authentication Scheme: Digest
            Username: "segalion at mydomain.es"
            Realm: "mydomain.net"
            Nonce Value: "c803a53ff76b7e11d8615f0015adc4e2"
            Authentication URI:
"sip:999999999 at mydomain.es<sip%3A999999999 at mydomain.es>
"
            Digest Authentication Response:
"9bd8fc0a1488f95f51df5aff69fc3c4a"
            Algorithm: MD5
            CNonce Value: "538f092c348f485cb882e34cb35924c5"
            QOP: auth
            Nonce Count: 00000001


As you can see pjsua miss "Authentication Domain", so IMS is not abble to
finish the call (responds with 480 Temporaly not available).

Please help me if this is a bug, or not standard field, or how to change
pjsua code to support this...

Thanks in advance..

PD: Finally, after a hard work, I could integrate voiceage g729 in pjsua
w32-mingw enviroment!!!.
Now, I need to solve this to test with IMS.

Thanks in advance, and please help me with this....
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