gdb-peda$ bt full
#0  strlen () at ../sysdeps/x86_64/strlen.S:106
No locals.
#1  0x00007ffff7942076 in url_xtra (url=url@entry=0x7ffff00075b0) at url.c:1048
        len_host = 0x3
        len_params = 0x0
        len_fragment = <optimized out>
        len_scheme = 0x0
        len_user = 0x0
        len_password = 0x0
        len_port = 0x0
        len_path = 0x0
        len_headers = 0x0
        xtra = <optimized out>
#2  0x00007ffff78fbf9f in sip_request_create (home=home@entry=0x7ffff0006fa0, method=method@entry=sip_method_invite,
    name=0x7ffff7964962 <sip_method_name_invite> "INVITE", name@entry=0x7ffff7961fc9 "INVITE", uri=uri@entry=0x7ffff00075b0,
    version=version@entry=0x0) at sip_basic.c:225
        xtra = <optimized out>
        rq = <optimized out>
        __PRETTY_FUNCTION__ = "sip_request_create"
#3  0x00007ffff78b1602 in nta_msg_request_complete (msg=msg@entry=0x7ffff0006fa0, leg=leg@entry=0x7ffff0006b00,
    method=method@entry=sip_method_invite, method_name=method_name@entry=0x7ffff7961fc9 "INVITE", request_uri=0x7ffff00075b0,
    request_uri@entry=0x0) at nta.c:3890
        rq = 0x0
        use_headers = 0x1
        home = 0x7ffff0006fa0
        to = <optimized out>
        seq = <optimized out>
        reg_url = {{
            url_pad = "\005\000\000\000\000",
            url_type = 0x0,
            url_root = 0x0,
            url_scheme = 0x0,
            url_user = 0x7ffff0006fa0 "\200\003",
            url_password = 0x7ffff782b530 "\303;",
            url_host = 0x7ffff0005af0 "",
            url_port = 0x7ffff0006fa0 "\200\003",
            url_path = 0x6c3f60 "\020\001",
            url_params = 0x7ffff7df04d5 <_dl_runtime_resolve+53> "I\211\303L\213L$0L\213D$(H\213|$ H\213t$\030H\213T$\020H\213L$\bH\213\004$H\20
3\304HA\377\343ffffff.\017\037\204",
            url_headers = 0x7ffff0001340 "\003",
            url_fragment = 0x7ffff7961fc9 "INVITE"
          }}
        original = <optimized out>
#4  0x00007ffff78d5e82 in nua_client_request_sendmsg (cr=cr@entry=0x7ffff0005af0) at nua_client.c:803
        nh = 0x6c3f60
        ds = 0x6c3fc8
        method = sip_method_invite
        name = 0x7ffff7961fc9 "INVITE"
        url = 0x0
        leg = 0x7ffff0006b00
        msg = 0x7ffff0006fa0
        error = <optimized out>
        __PRETTY_FUNCTION__ = "nua_client_request_sendmsg"
#5  0x00007ffff78d6ed9 in nua_client_request_try (cr=0x7ffff0005af0) at nua_client.c:708
        error = <optimized out>
#6  0x00007ffff78d4c83 in nua_client_init_request0 (cr=0x7ffff0005af0) at nua_client.c:605
        nh = 0x6c3f60
        msg = 0x7ffff00066c0
        url = <optimized out>
        has_contact = <optimized out>
        nua = 0x6bebb0
        ds = 0x6c3fc8
        t = 0x0
        error = <optimized out>
#7  nua_client_init_request (cr=0x7ffff0005af0) at nua_client.c:442
No locals.
#8  0x00007ffff78d5336 in nua_client_create (nh=nh@entry=0x6c3f60, event=event@entry=0x1f,
    methods=methods@entry=0x7ffff7b99b40 <nua_invite_client_methods>, tags=tags@entry=0x6c44c0) at nua_client.c:199
        home = 0x6c3f60
        cr = <optimized out>
        method = <optimized out>
        name = <optimized out>
#9  0x00007ffff78ead51 in nua_stack_invite (nua=nua@entry=0x6bebb0, nh=nh@entry=0x6c3f60, e=e@entry=nua_r_invite, tags=tags@entry=0x6c44c0)
    at nua_session.c:705
No locals.
#10 0x00007ffff78d1fa3 in nua_stack_signal (nua=0x6bebb0, msg=<optimized out>, ee=0x6c4498) at nua_stack.c:582
        e = 0x6c44a0
        nh = 0x6c3f60
        tags = 0x6c44c0
        event = nua_r_invite
        error = 0x0
#11 0x00007ffff79203a2 in su_base_port_execute_msgs (queue=0x0) at su_base_port.c:280
        root = <optimized out>
        f = <optimized out>
        msg = 0x0
        n = 0x0
#12 0x00007ffff79208ad in su_base_port_run (self=0x7ffff00008c0) at su_base_port.c:335
        tout = 0x3a98
        tout2 = 0x0
        __PRETTY_FUNCTION__ = "su_base_port_run"
#13 0x00007ffff7921000 in su_pthread_port_clone_main (varg=0x7fffffffdeb0) at su_pthread_port.c:324
        arg = 0x0
        task = {{
            sut_port = 0x7ffff00008c0,
            sut_root = 0x7ffff0001130
          }}
        zap = 0x1
#14 0x00007ffff760c184 in start_thread (arg=0x7ffff61cd700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7ffff61cd700
        now = <optimized out>
        unwind_buf = {
          cancel_jmp_buf = {{
              jmp_buf = {0x7ffff61cd700, 0xd23c025c6f29348b, 0x1, 0x0, 0x7ffff61cd9c0, 0x7ffff61cd700, 0x2dc3ee65f2e9348b,
                0x2dc3ec9dedb3348b},
              mask_was_saved = 0x0
            }},
          priv = {
            pad = {0x0, 0x0, 0x0, 0x0},
            data = {
              prev = 0x0,
              cleanup = 0x0,
              canceltype = 0x0
            }
          }
        }
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#15 0x00007ffff6b0abed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
gdb-peda$