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Scott_Albrech_8's avatar
Scott_Albrech_8
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Feb 03, 2005

regexp looking for email addresses in iRule

Toying with some stuff and thought I'd like to scan TCP payload for email addresses, preferably in the "MAIL FROM", but I'm starting much bigger for sake of easing into this. Anyhoo, not having much ...
application delivery
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Scott_Albrech_8's avatar
Scott_Albrech_8
Icon for Nimbostratus rankNimbostratus
Feb 06, 2005
Well, that has the same result I was seeing before. I hangs the SMTP session. I moved the TCP::release around and get a bit of interaction but still not a totally interactive SMTP session. I don't know if I understand the whole mechanism well enough to fiddle too much. But I tried this which made some headway: 

  
  when CLIENT_ACCEPTED {  
      TCP::collect 100  
      TCP::release  
   }  
   when CLIENT_DATA {  
      if { [TCP::payload] contains "joe@foobar.com" } {  
         reject  
      } else {  
          Release the current payload onto the server  
         TCP::release  
          But still collect the next data from the client  
         TCP::collect 500  
      }  
   }

Am I on the right track there? That gets me to at least the 220 in the transaction, but then it hangs again.