peristence on tcp string

Question

We're trying to peristence on a string in an encrypted tcp session.
&nbsp;After the ssl handshake, the first tcp packet has a user id in the form 
&nbsp;xxxxx@website.com then a lot of binary data follows.  We would like to persist based upon the xxxxx value and have tried the following irule but are not getting persistence.&nbsp;
&nbsp;when CLIENTSSL_HANDSHAKE {
&nbsp;   TCP::collect 300
&nbsp;}&nbsp;
&nbsp;when CLIENT_DATA {
&nbsp;   set userID [regexp -nocase {([0-9]*)@website.com} [TCP::payload]]
&nbsp;   if { $userID ne ""} {
&nbsp;   log local0. "userID is ..$userID..end"
&nbsp;      persist uie $userID 1800
&nbsp;   }
&nbsp;   else {
&nbsp;      log local0. "userID not found"
&nbsp;      pool no-ID
&nbsp;   }
&nbsp;   TCP::release
&nbsp;}&nbsp;
&nbsp;Although sniffing confirms the string is there, the logs show userID not found...
&nbsp;Any help would be much appreciated.

colin_walker_12 · Answer

I'd try adding -inline to the regexp, or changing the way you're capturing the variable:
From the TCL docs here Click here, the base formate for the regexp command is: 
regexp ?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?
So something like this should get you there:
  set userID [regexp -nocase -inline { [ 0-9 ]+@website.com} [TCP::payload] ]
HTH,
Colin

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