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semperfiguy_759's avatar
semperfiguy_759
Icon for Nimbostratus rankNimbostratus
Feb 19, 2016

Parse UDP::payload

How do I parse out a string from UDP::payload? I am trying to parse out the file name from a TFTP get. UDP::payload looks like this ??filename??netascii?? string range works fine, but the file n...
application delivery
iRules
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Feb 19, 2016

Hi Semperfiguy,

you may try this syntax...

when CLIENT_ACCEPTED {
    log local0.debug "Payload: [UDP::payload]"
    binary scan [UDP::payload] xxa* payload
    log local0.debug "Payload_a: $payload"
    log local0.debug "TFTP File Name : [lindex [split $payload \000] 0]"
}

Cheers, Kai