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Re: [reSIProcate-users] Using hostname in RR/Via causing send to fail


Okay, so we're getting a bit beyond my knowledge of the way the transports work, but it looks to me like the issue arises from the way the TransportSelector treats "specific" IP addresses versus "any" IP addresses. Perhaps someone with better knowledge of the transports can weigh in on the topic.

/a

Andrew Wood wrote:
Hi Adam

When I start up the proxy   it prints out:

INFO | 20090302-230201.199 | | RESIP:DNS | 1077209024 | dns/AresDns.cxx:141 | DNS initialization: found 1 name servers INFO | 20090302-230201.199 | | RESIP:DNS | 1077209024 | dns/AresDns.cxx:144 | name server: 192.168.254.200 INFO | 20090302-230201.200 | | RESIP:TRANSPORT | 1077209024 | UdpTransport.cxx:42 | Creating UDP transport host=192.168.254.202 port=5060 ipv4=1


.202 is the proxy IP. The round-robin host name resolves to both .202 & .201. The DNS server found is correct.


I have a C++ std::string containing the servers hostname which I use to build a record route & Via. If I initialise it to "192.168.254.202" everything works but if I initialise it to "sip.xswitch.local" I get the aforementioned error.

sip.xswitch.local is setup on the DNS-- if I do host sip.xswitch.local at the Linux shell i get:

sip.xswitch.local has address 192.168.254.202
sip.xswitch.local has address 192.168.254.201

I've just double checked - the proxy program is given two commandline arguments- the IP address (192.168.254.202) which resip binds to at startup & the round robin hostname which is used ONLY to generate Via & Record-Route headers. If i pass them both as IP's it works, but an IP and a hostname fails :S

Andrew
Adam Roach wrote:
Andrew:

What I'm reading in the log you've sent is that you're asking to send the message via UDP from port 5060 using any available interface. The transport selector can't find any provisioned transport meeting those criteria.

Can you double-check the part of your code where you add transports to the stack and ensure that the proxy has a UDP transport operating on port 5060?

/a


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