On Oct 4, 2018, at 6:01 AM, 薛光宏 <albert.hsueh@cloudigit.com> wrote:

Hi All,

We run a mobile app to register FreeSWITCH 1.6.20 via sip. This app will check value of server field in message header but the packet sent from FreeSWITCH doesn't have this field. 

We would like to know is it possible to add filed "Server" to message header by adjusting FreeSWITCH configuration?

We tried this by adjusting dialplan (https://freeswitch.org/confluence/display/FREESWITCH/Sofia+SIP+Stack)

        <action application="set"><![CDATA[sip_h_Server=xxxxxx]]></action>

it works in invite stage, but can not work in register stage. The app checks the filed "Server" in register stage.