Hi, I'm running STUN server pjstun-srv-test-i686-pc-linux-gnu on a linux machine on the internet. This linux machine has two differnet public ip addresses. Because I have only one network card interface, I set one public ip addresses on the same interface with the alias mode, i.e., eth0:0. Then I run the following command on a linux pc behind a netscreen firewall ./pjstun-client-i686-pc-linux-gnu x where x is one of the public ip addresses of the linux machine on the internet. I enter the menu mode and select d to detect NAT type. But it always reports "client_main.c Error detecting NAT type: Server Error". Then I try another sample: pjsua-i686-pc-linux-gnu --null-audio --stun-srv=x it also reports "client_main.c Error detecting NAT type: Server Error". To trace the issue, I looked up the code and in nat_detect.c, I found that pj_stun_msg_find_attr(response, PJ_STUN_ATTR_CHANGED_ADDR, 0) always returns NULL. Thus could you tell me : (1) whether PJ_STUN_ATTR_CHANGED_ADDR attrib is supported by the STUN server pjstun-srv-test-i686-pc-linux-gnu ? Or may I use another stun server with this feature? (2)whether NAT detection function is spported by the clients pjstun-client-i686-pc-linux-gnu and pjsua-i686-pc-linux-gnu? (3)if NAT detection function isn't spported now, how to implement the UDP tranversal through firewall/NAT? (4)whether my networking configuration has problem? If yes, how to confiure it correctly? I'm looking forward to your help. Thanks a lot! Sang ------------------------------------------------------------------- ??????????"???? ????"( http://d1.sina.com.cn/sina/limeng3/mail_zhuiyu/2008/mail_zhuiyu_20080218.html ) =================================================================== ????2G?????http://mail.sina.com.cn/?
