Hi all,
I have a basic question of how to get dialog information using NUA:
I want to add attended call transfer feature to sofsip_cli. As you might
know, in attended call transfer, Replaces header (RFC 3891) is used to tell
a remote party to replace the current dialog with another one.
Therefore, the referrer needs to contain its current dialog information in
the REFER request, so that the refer-recipient can send a INVITE with
replaces header which contains this dialog information to the CN (CN is the
remote party which originally communicates with referrer, so after the call
transfer, the refer-recipient will replace referrer to communicate with CN).
But how can I get dialog information suing NUA?
Should we use some functions or tagging/macros to get dialog information
from NUA stack object (nua_t) or handle (nua_handle_t)?
As defined in NUA document, operation handle represents an abstract SIP
call/session. It contains information of SIP dialog and media session... I
suppose there should be some ways for application to access dialog
information?
--
Best Regards
Tan Miaoqing
Master's Programme in Mobile Computing - Services and Security
Helsinki University of Technology
http://users.tkk.fi/~mitan
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