the -timeout parameter does not work with TCP transport

[denyspozniak]

Hey!
It looks like the -timeout parameter does not work with TCP transport.
This can be easily reproduced:

# time sipexer -timeout 10000 tcp:8.8.8.8:5060
...
[error] [sipexer.go:1875] main.SIPExerSendTCP(): error: dial tcp4 8.8.8.8:5060: connect: connection timed out
0.01s user 0.00s system 0% cpu 2:11.44 total

# time sipexer -timeout 10000 udp:8.8.8.8:5060
...
[info] [sipexer.go:1616] main.SIPExerDialogLoop(): trying again - new timeout at 3500ms
[info] [sipexer.go:1616] main.SIPExerDialogLoop(): trying again - new timeout at 7500ms
[error] [sipexer.go:1619] main.SIPExerDialogLoop(): error reading - bytes 0 - <nil>
0.00s user 0.00s system 0% cpu 7.535 total