Hello all,
I'm trying to remote control an embedded system using telnet. The system is
running QNX (A realtime Unixoid).
The first connection with telnet works without any problem. But the second
hangs forever.
I prepared a minimal working (or rather not working) example:
=========================================================================================
<project name="test" basedir="." default="telnet2">
<target name="telnet2" depends="telnet1">
<telnet server="192.168.118.130" userid="root" password="root"
timeout="5">
<read>#</read>
<write echo="true">ls</write>
</telnet>
</target>
<target name="telnet1">
<telnet server="192.168.118.130" userid="root" password="root">
<read>#</read>
<write echo="true">ls</write>
</telnet>
<echo message="sleeping 2s"/>
<sleep seconds="2"/>
<echo message="slept 2s"/>
</target>
</project>
=========================================================================================
If I execute this I get the following output from ant:
=========================================================================================
C:\tmp>ant
Buildfile: C:\tmp\build.xml
telnet1:
[telnet]
[telnet]
[telnet] QNX Neutrino (localhost) (ttyp0)
[telnet]
[telnet]
[telnet]
[telnet] login:
[telnet] root
[telnet] Password:
[telnet]
[telnet] Wed Sep 28 15:00:20 2011 on /dev/ttyp0
[telnet] Last login: Wed Sep 28 14:59:24 2011 on /dev/ttyp0
[telnet] #
[telnet] ls
[echo] sleeping 2s
[echo] slept 2s
telnet2:
Batchvorgang abbrechen (J/N)? J
C:\tmp>
=========================================================================================
The second telnet task hung for more than five minutes (note the 5s timeout
specified).
On the remote systems side I looked for the connection using netstat. It was
there during the first task execution. Then gone afterwards, and another
connection was made for the second execution.
So I verified, that the first connection is properly closed, at least on the
remote system.
Does anybody know of this problem? Can you give me any directions to further
investigate?
I am writing in the hopes of not having to dig into the commons-net source code
and debugging it myself.
Best regards
Till
--
Till Fischer
Software Engineer
Software Release Management
Neusoft Technology Solutions GmbH
Hugh-Greene-Weg 2-4
22529 Hamburg - Germany
Mailto: [email protected]
www.neusoft.com
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