Hi All I have a small doubt on usage of pj_ioqueue_sendto(ckey, &write_op, send_buf, &bytes, 0, &dst_addr,sizeof(dst_addr)). Please note that memory for send_buf is allocated using malloc function. pj_ioqueue_sendto can return either success , pending or someother error. Incase of success or error, I can free the memory allocated for send_buf. Incase of pending I will not be able to free the memory for send_buf. So , when it is the right time to free the memory for send_buf, please point with some pseudo code or example. Thanks in advance Kamal -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120405/6c87489d/attachment.html>