Hello allo PJSIP experts, I have now a problem with logging SIP messages, which are sent out. I am using the following code to do it at this moment: PJ_LOG(5,(tsx->obj_name, "===>Raw data:\n%s", (tdata && tdata->buf.start)?tdata->buf.start:"NULL")); but sometime it gets "NULL" back, and sometimes it works fine. Must I call "pjsip_tx_data_invalidate_msg" before using the buf? Is there any other way to printf the SIP message out? Thanks a lot Regards, Pai -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130304/157809c7/attachment-0001.html>