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Forum Discussion

Jeremy_Bridges_'s avatar
Jeremy_Bridges_
Icon for Nimbostratus rankNimbostratus
Aug 21, 2009

Custom TCP Monitor

I am looking to do some custom TCP monitoring with a custom application that we need to monitor with the F5. Essentially, the application's thread handling logic will hang unless a specific set of se...
management
monitoring
Jeremy_Bridges_'s avatar
Jeremy_Bridges_
Icon for Nimbostratus rankNimbostratus
Sep 03, 2009
Thanks for the tip about echo adding a newline character. I didn't know that. After I added the "\c" to the input it worked fine. In experimenting with it I ended up doing what you described: putting the escaped chars in a string and then coverting them to their actual chars using echo: 

 
 input="FDCB\x1F\x00\x00\x00Service=RC_SERVICE\x1ECommand=Ping\x00\x00\x00\x00\c" 
 output=$(echo -e $input | nc $ip $port -w 5)

Again, thanks for your help! I have attached the full script for anyone's future use. Let me know if you think there should be any further optimizations or changes.