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Hi, Hoping someone with a bit
more knowledge of the DNS in resip can help me figure out how 2 different code
paths seem to be used when querying a DNS entry. Two different boxes running
the same resip code are seeing 2 different results. The first is working
correctly, an outbound invite is being sent to a URI with a FQDN. The
lookup works and the call is successful. The second seems to use a
different code path, logs that it got the result, but after this the outbound
call never goes out. The only difference externally is that in case #2,
the lookup takes approx 8seconds, where in case #1 the lookup completes without
delay. Here is a snippet of the 2
paths, hoping someone can explain the difference. Note the fqdn and IP have
been changed as they were public. Thanks. The format of the logs is
[log entry #][datetime][thread id][file.line][Log Entry] #1 Successful case: [
51101] [2010-01-19T15:21:39.129] [4236] [trace]
[TransactionState
.2006] [sendToWire with no dns result: tid=5b076550e903cd0a [
ClientInvite/Calling reliable target=[ V4 0.0.0.0:0 UNKNOWN_TRANSPORT target
domain=unspecified mFlowKey=0 ]]] [
51102] [2010-01-19T15:21:39.129] [4236] [debug]
[TransportSelector
.0317] [Looking up dns entries for sip:12071234567@xxxxxxxxxxxxxx:5060] [
51103] [2010-01-19T15:21:39.129] [4236] [debug]
[DnsResult
.0209] [DnsResult::lookup sip:12071234567@xxxxxxxxxxxxxx:5060] [
51104] [2010-01-19T15:21:39.129] [4236] [trace] [DnsStub
.0392] [DNS query of:myfqdn.invalid A] [
51105] [2010-01-19T15:21:39.155] [4236] [trace]
[DnsStub
.0424] [myfqdn.invalid not cached. Doing external dns lookup] [
51106] [2010-01-19T15:21:39.180] [4236] [debug]
[DnsStub
.0044] [myfqdn.invalid(A)--> 192.168.1.1] [
51107] [2010-01-19T15:21:39.180] [4236] [trace]
[DnsResult
.0774] [Received dns result for: myfqdn.invalid] [
51108] [2010-01-19T15:21:39.180] [4236] [trace]
[DnsResult
.0775] [DnsResult::onDnsResult() 0] [
51109] [2010-01-19T15:21:39.180] [4236] [trace]
[DnsResult
.0797] [Adding [ V4 192.168.1.1:5060 UDP target domain=myfqdn.invalid mFlowKey=0 ] to result set] [
51110] [2010-01-19T15:21:39.190] [4236] [trace]
[TransactionState
.1833] [tid=5b076550e903cd0a [ ClientInvite/Calling reliable target=[ V4
0.0.0.0:0 UNKNOWN_TRANSPORT target domain=unspecified mFlowKey=0 ]] got DNS
result: myfqdn.invalid --> [[ V4 192.168.1.1:5060 UDP target domain=myfqdn.invalid
mFlowKey=0 ]]] [
51111] [2010-01-19T15:21:39.190] [4236] [trace]
[DnsResult
.0189] [Returning next dns entry: [ V4 192.168.1.1:5060 UDP target domain=myfqdn.invalid
mFlowKey=0 ]] #2 Failure case [
555] [2010-01-19T10:53:15.568] [4700] [trace]
[TransactionState
.2006] [sendToWire with no dns result: tid=9667f32dc6123d2c [ ClientInvite/Calling
reliable target=[ V4 0.0.0.0:0 UNKNOWN_TRANSPORT target domain=unspecified
mFlowKey=0 ]]] [
556] [2010-01-19T10:53:15.568] [4700] [debug]
[TransportSelector
.0317] [Looking up dns entries for sip:16044485600@xxxxxxxxxxxxxx:5060] [
557] [2010-01-19T10:53:15.568] [4700] [debug]
[DnsResult
.0209] [DnsResult::lookup sip:16044485600@xxxxxxxxxxxxxx:5060] [
558] [2010-01-19T10:53:15.568] [4700] [trace]
[DnsStub
.0392] [DNS query of:myfqdn.invalid A] [
559] [2010-01-19T10:53:15.568] [4700] [trace]
[DnsStub .0424]
[myfqdn.invalid not cached. Doing external dns lookup] [
562] [2010-01-19T10:53:23.826] [4420] [trace]
[DnsResolver
.0228] [Looking up hostname = myfqdn.invalid] [
563] [2010-01-19T10:53:23.982] [4420] [debug]
[DnsResolver
.0383] [DnsResolver got DNS result ] [
564] [2010-01-19T10:53:23.982] [4420] [trace]
[DnsResolver
.0303] [Got DNS result. Target = myfqdn.invalid Result = 192.168.1.1] [
565] [2010-01-19T10:53:23.982] [4420] [trace]
[DnsResolver
.0240] [Lookup completed] (No other log entry after
this, after 1 minute the App tears down the call with resip::end()) |