Hello!<br><br>   I am trying to do some load tests using Sipp with an authentication scenario. I can stablish one call using sipp as UAC but I receive continuously 407 SIP messages requiring authenticate. I&#39;ve got one tcpdump capture:<br>
<br>|Time     | 192.168.2.230                         |<br>|         |                   | 192.168.2.235     |                   <br>|0,000    |         INVITE SDP ( g711U)           |SIP From: <a href="http://sip:sipp@192.168.2.230:5061">sip:sipp@192.168.2.230:5061</a> <a href="http://To:sip:9999@192.168.2.235:5060">To:sip:9999@192.168.2.235:5060</a><br>
|         |(5061)   ------------------&gt;  (5060)   |<br>|0,001    |         100 Trying|                   |SIP Status<br>|         |(5061)   &lt;------------------  (5060)   |<br>|0,021    |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|0,022    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|0,023    |         INVITE SDP ( g711U)           |SIP From: <a href="http://sip:sipp@192.168.2.230:5061">sip:sipp@192.168.2.230:5061</a> <a href="http://To:sip:9999@192.168.2.235:5060">To:sip:9999@192.168.2.235:5060</a><br>
|         |(5061)   ------------------&gt;  (5060)   |<br>|0,024    |         100 Trying|                   |SIP Status<br>|         |(5061)   &lt;------------------  (5060)   |<br>|0,190    |         200 OK SDP ( g711U telephone-event)          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|0,190    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|0,191    |         RTP (g711A)                   |RTP Num packets:236  Duration:7.051s SSRC:0xDEE0EE8F<br>
|         |(6000)   ------------------&gt;  (2645)   |<br>|0,194    |         RTP (g711U)                   |RTP Num packets:611  Duration:12.199s SSRC:0x5594757F<br>|         |(6000)   &lt;------------------  (26456)  |<br>
|0,194    |         RTP (g711U)                   |RTP Num packets:611  Duration:12.200s SSRC:0x5594757F<br>|         |(6000)   ------------------&gt;  (26456)  |<br>|0,523    |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|0,525    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|1,524    |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|1,524    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|3,524    |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|3,524    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|7,524    |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br>|7,524    |         ACK       |                   |SIP Request<br>|         |(5061)   ------------------&gt;  (5060)   |<br>|10,193   |         BYE       |                   |SIP Request<br>
|         |(5061)   ------------------&gt;  (5060)   |<br>|10,194   |         481 Call Does Not Exist          |SIP Status<br>|         |(5061)   &lt;------------------  (5060)   |<br>|10,196   |         BYE       |                   |SIP Request<br>
|         |(5061)   ------------------&gt;  (5060)   |<br>|10,197   |         481 Call Does Not Exist          |SIP Status<br>|         |(5061)   &lt;------------------  (5060)   |<br>|11,529   |         407 Proxy Authentication Required          |SIP Status<br>
|         |(5061)   &lt;------------------  (5060)   |<br><br><br><br>I respond with a new INVITE to first 407 received and RTP channels get connected but one and other 407 messages arrives during call and when I try to send BYE FS tells that call does not exists. 407 messages referes to first INVITE (Cseq=1). Any idea where the problem is?<br>
<br>Regards<br>