I am recieving multiple IPNs and I know that is supposed to happen until paypal receives a 200 OK from me. Problem is, not sure what 200 OK is and it must not be sending one now. I was going to work around this by checking for a unique ID of some sort and only processing the first one, however, the TXN_ID keeps changing. Any techniques on how to filter the IPNs to process only first one OR send 200 OK? Thanks in advance!

<CFSET str="cmd=_notify-validate">
<CFLOOP INDEX="TheField" list="#Form.FieldNames#">
<CFSET str = str & "#LCase(TheField)#=#URLEncodedFormat(Evaluate(TheField))#">
</CFLOOP>
<CFIF IsDefined("FORM.payment_date")>
<CFSET str = str & "&payment_date=#URLEncodedFormat(Form.payment_date)#">
</CFIF>
<CFIF IsDefined("FORM.subscr_date")>
<CFSET str = str & "&subscr_date=#URLEncodedFormat(Form.subscr_date)#">
</CFIF>

<cffile action="append"
file="MY PHYSICAL LOCATION HERE\paypal_log.txt"
output="#str#">

<CFHTTP URL="http://www.paypal.com/cgi-bin/webscr?#str#" METHOD="get" RESOLVEURL="false">
</CFHTTP>


<cfif parameterexists(CFHTTP.FileContent)>
<cffile action="append" file="MY PHYSICAL LOCATION HERE\paypal_log.txt"
output="#CFHTTP.FileContent#">
</cfif>

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As you can see I am using paypal_log.txt to test my page. I have making purchases and watching the log. I wont paste the log but here is what it ends up looking like.

---

cmd=_notify-validate&txn_type=subscr%5Fpayment PLUS A BUNCH MORE
cmd=_notify-validate&txn_type=subscr%5Fsignup PLUS A BUNCH MORE
VERIFIED
VERIFIED
cmd=_notify-validate&txn_type=subscr%5Fsignup PLUS A BUNCH MORE
VERIFIED
cmd=_notify-validate&txn_type=subscr%5Fsignup PLUS A BUNCH MORE
cmd=_notify-validate&txn_type=subscr%5Fpayment PLUS A BUNCH MORE
VERIFIED
VERIFIED

---

I receive signups and payments and VERIFIEDs multiple times so the 200 OK must not be being passed back. if there was a unique txn_id for each purchase, I wouldnt have a problem but it generates a new one everytime the ipn hits.

Also, notice that its sendind to the non-ssl address. And I am using subscriptions.

Thanks for any help you guys can give!

ok, good advice!