[OpenSIPS-Users] t_uac_dlg command through mi_datagram socket gives 400 bad headers

[Husnain Taseer]

Hi,

I have successfully sent MESSAGE using mi_json module. Below information
might be helpful for other opensips users as well.

​I have mi_json param string:

MESSAGE,sip:​212897645@​192.168.1.20,.,.,From:
sip:​212897554@​192.168.1.20\r\nTo:
sip:​212897645@​192.168.1.20\r\nContent-Type: text/plain;
charset=UTF-8\r\n​,,Hi How are you ?

​We have to URL encode this string before sending it to mi_json. Use online
URL encoder I have used [https://www.urlencoder.org/]. When you will encode
the above string /r and /n will be considered two characters each but we
need to encode them as Carriage Return (%0D) and Line Feed (%0A). In simple
words URL encode of /r should be %0D not %5Cr and for /n it should be %0A
not %5Cn For That modify the above string as:

MESSAGE,sip:​212897645@​192.168.1.20,.,.,From: sip:​212897554@​192.168.1.20
To: sip:​212897645@​192.168.1.20
Content-Type: text/plain; charset=UTF-8
​,Hi How are you ?

Now encode the above string it will become:

MESSAGE%2Csip%3A%E2%80%8B212897645%40%E2%80%8B192.168.1.20%2C.%2C.%2CFrom%3A+sip%3A%E2%80%8B212897554%40%E2%80%8B192.168.1.20%0D%0ATo%3A+sip%3A%E2%80%8B212897645%40%E2%80%8B192.168.1.20%0D%0AContent-Type%3A+text%2Fplain%3B+charset%3DUTF-8%0D%0A%E2%80%8B%2CHi+How+are+you+%3F%0D%0A

Now Pass the above string as a parameter of t_uac_dlg command in curl:

curl "http://127.0.0.1:8080/json/t_uac_dlg?params=
MESSAGE%2Csip%3A%E2%80%8B212897645%40%E2%80%8B192.168.1.20%2C.%2C.%2CFrom%3A+sip%3A%E2%80%8B212897554%40%E2%80%8B192.168.1.20%0D%0ATo%3A+sip%3A%E2%80%8B212897645%40%E2%80%8B192.168.1.20%0D%0AContent-Type%3A+text%2Fplain%3B+charset%3DUTF-8%0D%0A%E2%80%8B%2CHi+How+are+you+%3F%0D%0A
"

The Message will be successfully sent to the the destination number. I will
work on mi_datagram and will post the example of sending MESSAGE from
datagram socket as well.

Regards,
*Husnain Taseer - **VoIP Development professional*
*Cell : +973 3353 8026*

On Mon, Mar 6, 2017 at 11:17 AM, Husnain Taseer <husnain.taseer at gmail.com>
wrote:

> Hi Folks!
>
> I am trying to generate a MESSAGE packet using t_uac_dlg command from a
> management script written in Python. I have tried different combination of
> argument string but either getting parsing error or 400 bad headers error.
> The string which I am sending to mi_datagram socket in my Python script is:
>
> *message = ''':t_uac_dlg:\nMESSAGE\n​​sip:​​212897645 at 192.168.1.20
> <nsip%3A212897645 at 192.168.1.20>\n.\n.\n"From:
> <sip:​​212897554@​​192.168.1.20 <sip%3A212897554 at 192.168.1.20>>\\r\\nTo:
> <sip:212897645 at 192.168.1.20
> <sip%3A212897645 at 192.168.1.20>>\\r\\np-identifier:
> Local_Socket_V1.0\\r\\nContent-Type: text/plain\\r\\n"\n"Hi This is a Test
> Message"\n'''*
>
> When I print the above string it gives me the value given below:
>
> :t_uac_dlg:
> MESSAGE
> sip:212897645 at 192.168.1.20
> .
> .
> "From: <sip:212897554 at 192.168.1.20>\r\nTo: <sip:212897645 at 192.168.1.20>\r\np-identifier:
> Local_Socket_V1.0\r\nContent-Type: text/plain\r\n"
> "Hi This is a test"
>
> When I send this string to mi_datagram socket it gives me *400 Bad
> headers *Please guide where I am doing wrong.
>
>
> Regards,
> *Husnain Taseer*
>
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