Doing something wrong for wildcard registration

[nishantjr@xxxxxxxxx (Nishant Rodrigues)]

Hi,

I seem to be doing something wrong here:
I can not get wildcard realms to work; Whereas setting realm explicitly (to
'asterisk') succeeds.
Note that I am using C++, and pj_string is a class that can be easily
converted to pj_str

This is the error i get:
    Unable to set auth for tdta0x9e9ce58: can not find credential for
asterisk/Digest


Code:
    ....
    pjsip_regc_init(
            regc,
            pj_string("sip:" + reg.registrar),
            pj_string("sip:" + reg.username + "@" + reg.registrar),
            pj_string("sip:" + reg.username + "@" + reg.registrar),
            1, &contact,
            300 /*Timeout*/));

    pjsip_cred_info cred;
    memset(&cred, 0, sizeof(cred));

    cred.realm = *pj_string("*");
    cred.scheme = *pj_string("digest");
    cred.username = *pj_string(reg.username);
    cred.data_type = 0; /* plaintext passwd */
    cred.data = *pj_string(reg.secret);

    pjsip_regc_set_credentials(regc, 1, &cred);

    pjsip_tx_data* tdata = NULL;
    pjsip_regc_register, (regc, 1, &tdata));
    pjsip_regc_send, (regc, tdata));

Thanks,
Nishant
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