Hi Omar, Thanks for the clear answer. But if that is the case, how are other VoIP clients like Kapanga able to give the user control over selecting the interface? I have attached a screenshot, where there is a dropdown menu letting the user choose the NIC (either 0 or 1) that he wants. https://picasaweb.google.com/101582892235327293990/KapangaNICSelect#5763154867739970322 If I had to guess, I would say that Kapanga internally changes the route table. But I don't want to assume so much. I also found this very informative guide that explains difference between XP and Vista handling. I am currently testing on an XP machine. From this it looks like using a Vista would solve my problem. http://blogs.technet.com/b/networking/archive/2009/04/25/source-ip-address-selection-on-a-multi-homed-windows-computer.aspx Regards, Arjun ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 8 Jul 2012 09:28:57 +0300 > From: Arjun Kamath <junnaonly@xxxxxxxxx> > To: pjsip at lists.pjsip.org > Subject: Re: Wrong NIC despite bound_addr (Omar Hussein) > Message-ID: > < > CADzHbEXtQktzTzEEu-Wdin09gfCDS6T+MW9hVKEu+q2j-MRrTQ at mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi Omar, > > For a little background, what I would actually like is for the tool to let > the user choose from the various NICs available on the machine, with a drop > down menu and for the tool to use only that NIC to send and receive all > (SIP, SDP, UDP, RTP) messages. With this in mind, I felt that bound_addr > and public_addr would do the job for me. > > Is modifying the route table the only way? I felt that this was more of a > hack than a permanent solution. I would have to change the route settings > on every test machine and other applications would be unnecessarily > affected as well right? > > Regards, > Arjun > > > > Message: 4 > > Date: Sat, 7 Jul 2012 01:12:43 +1000 > > From: Omar Hussein <omarh2812@xxxxxxxxx> > > To: pjsip list <pjsip at lists.pjsip.org> > > Cc: "pjsip at lists.pjsip.org" <pjsip at lists.pjsip.org> > > Subject: Re: Wrong NIC despite bound_addr > > Message-ID: <7FDA71F0-5359-4497-872F-48D979069698 at gmail.com> > > Content-Type: text/plain; charset="us-ascii" > > > > Hi > > > > Since your destination is on different subnet packet must go to default > > gateway. Maybe since default gateway is only configured on 131.x.x.x > > interface windows is using that one. > > > > If you want to send the packet to another gateway on the other subnet you > > can add a static route by using the route add command in a cmd prompt. > > > > Regards > > Omar > > > > > > > > On 07/07/2012, at 12:41 AM, Arjun Kamath <junnaonly at gmail.com> wrote: > > > > > Also, in case it wasn't clear. I am not receiving any replies > whatsoever > > on wireshark. I keep sending this mesage > > > > > > Source: 10.52.230.74 > > > Destination: 192.168.212.24 > > > Protocol:SIP > > > Length:585 > > > Info: Request: REGISTER sip:ericssonlte.com > > > > > > > > > On Fri, Jul 6, 2012 at 5:38 PM, Arjun Kamath <junnaonly at gmail.com> > > wrote: > > > Hi, > > > > > > I am developing my tool in Visual Studio 2008 using pjsip 2.0 without > > any video. > > > > > > My machine has 2 NICs as follows: > > > > > > Windows IP Configuration > > > > > > Ethernet adapter Local Area Connection 2: > > > > > > Connection-specific DNS Suffix . : > > > IP Address. . . . . . . . . . . . : 10.52.230.74 > > > Subnet Mask . . . . . . . . . . . : 255.255.255.0 > > > Default Gateway . . . . . . . . . : > > > > > > Ethernet adapter Local Area Connection: > > > > > > Connection-specific DNS Suffix . : > > > IP Address. . . . . . . . . . . . : 131.160.81.63 > > > Subnet Mask . . . . . . . . . . . : 255.255.252.0 > > > Default Gateway . . . . . . . . . : 131.160.80.1 > > > > > > I would like my VoIP application to communicate to the Proxy over > > 10.52.230.74. I have set each of the following to 10.52.230.74 > > > > > > app_config.udp_config.public_addr > > > app_config.udp_config.bound_addr > > > app_config.rtp_config.public_addr > > > app_config.rtp_config.bound_addr > > > > > > What is strange is that on the Wireshark trace, the packet source is > > shown as 10.52.230.74 but it is sent over the 131.160.81.63 interface(I > > have to activate the sniffer on the 131.160.81.63 to see any SIP > messages) > > There are no SIP messages sent over 10.52.230.74 interface. > > > > > > I have tried to compare my tool with pjsua_app and things look the > same. > > > > > > Any advice? > > > > > > Regards, > > > Arjun > > > > > > > > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120708/52becf5b/attachment-0001.html > > > > ------------------------------ > > Message: 2 > Date: Sun, 8 Jul 2012 22:27:35 +1000 > From: Omar Hussein <omarh2812@xxxxxxxxx> > To: pjsip list <pjsip at lists.pjsip.org> > Cc: "pjsip at lists.pjsip.org" <pjsip at lists.pjsip.org> > Subject: Re: Wrong NIC despite bound_addr (Omar Hussein) > Message-ID: <D450BEEF-9D7E-4666-9C85-4E3F1719EFC4 at gmail.com> > Content-Type: text/plain; charset="us-ascii" > > Hi Arjun > > The route table is to let windows tcp/ip know how to reach that > destination network of 192.x.x.x. If the destination address was in the > same subnet as the 10.x.x.x interface (as determined by the subnet mask) > then that interface would be used. But since it's on a different network to > both interfaces a default gateway must be used to route the packet. Windows > only knows of one gateway which is the one configured on the other > interface. You could set the default gateway on the 10.x.x.x interface > instead and it will use that one. Or set a static route as i suggested > before. > > Regards > Omar > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120709/b704565c/attachment.html>
