[hobbit] Dumb hobbit network test question

[Henrik Stoerner]

On Wed, Nov 30, 2005 at 03:38:56PM -0500, Kauffman, Tom wrote:
> Henrik, can you clarify what this really means?
> 
> Address=10.8.224.9:21, open=1, res=0, err=1, connecttime=0.003110, totaltime=10.063026,

"open=1" means that the connection to the server succeeded. The
interesting thing here is that it took only 0.003 seconds to get a
connection, but then Hobbit spent more than 10 seconds waiting for a
banner to appear. It never did - at least not within those 10 secs;
the "err=1" means it gave up waiting for the data and signals a timeout.

> Address=10.8.224.38:21, open=1, res=0, err=0, connecttime=0.003060, totaltime=0.028471, 
>   banner='220 wabash FTP server (Version 4.2 Sat Feb 5 10:12:55 CST 2005) ready. 221 Goodbye.' (86 bytes)

This is a different server. Again, connecting takes about 0.003 secs,
but the banner appears almost immediately - the entire exchange happens
in 28 milliseconds.


It might be that the FTP server performs a reverse DNS lookup of the
Hobbit servers' IP address when Hobbit connects to check the FTP
service. Sometimes DNS lookups take a while - maybe long enough for
Hobbit to reach the 10 seconds timeout. Maybe your ftp server has 
a local DNS cache, and the timeout only happens when the cached DNS
entry expires and has to be refreshed.

One thing you can try is to add a "--timeout=30" option to the
bbtest-net command in hobbitlaunch.cfg; that makes it wait up to 30
seconds before flagging a timeout.


Regards,
Henrik