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Dave_Pisarek's avatar
Dave_Pisarek
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Jul 17, 2019

Persistence based on XML data

All,

 

Working on an issue where we need to persistence when user disconnects from the wored network to a wireless network and their IP changes. The application is a CRM that does not allow cookie insertion and does not have a sessionid or jsession that I can base session persistence on. When a user opens this application I can see the below data in the stream and was wondering if we can utilize universal or hash persistence based on the userId or uuid fields in the xml content. Is this possible and would it be a simple irule to create? Does anyone have an example by any chance.

 

POST /application/solarsessionmanagement/ClientSessionService HTTP/1.1

Accept: text/xml, multipart/related

Content-Type: text/xml; charset=utf-8

SOAPAction: ""

User-Agent: xxxxxxxxxx

Host: xxxxxxxxxxx

Connection: keep-alive

Content-Length: 655

 

<?xml version="1.0" ?><S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"><S:Body><ns2:callSubroutinesWithAddlData xmlns:ns2="http://www.eclipseinc.com/application/solarsessionmanagement"><arg0><userId>testuser</userId><uuid>330a48d6-4021-388d-a291-7a1d22171eb3</uuid><sessionType>Solar</sessionType></arg0><arg1><skipRetryAndClose>true</skipRetryAndClose><subroutineArray><uvSubroutines>AAAXU09MQVIuSjJFRS5TRVQuVFRZLkRBVEEAAAEyAAAAAAAA</uvSubroutines><uvSubroutines>AAAQUkVBRC5DT05UUk9MLlJFQwAAATYAAAAAABJNU0cuTk9USUZZLk9QVElPTlMAAAAAAAAAAAH9AAAA</uvSubroutines></subroutineArray></arg1></ns2:callSubroutinesWithAddlData></S:Body></S:Envelope>

application delivery
BIG-IP
iRules

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  • Vijay_E's avatar
    Vijay_E
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    Jul 18, 2019

    It has been a while since I tested this iRule out. However, I have used it in the past successfully in 10.x and 11.x code version. The code provides persistence based on jsession id for GET request and xml data for POST request.

     

    You would have to alter the code to suit your specific needs:

     

    when HTTP_REQUEST {

    set HOST [string tolower [HTTP::host]]

    set SRCADDR [IP::remote_addr]

     

    if { $HOST contains ".v." }{

     

    if { [HTTP::method] equals "GET" } {

    set SESSIONID [findstr [HTTP::uri] "uuid=" 5 20]

    set KEY [crc32 $HOST$SESSIONID]

     

    persist hash $KEY 30

     

    } elseif { (([HTTP::method] equals "POST") and ([HTTP::uri] contains "/amm/ampxml.jsp")) } {

     

     if {[HTTP::header "Content-Length"] ne "" && [HTTP::header "Content-Length"] <= 1048}{

      set CONTENT [HTTP::header "Content-Length"]

     } else {

       set CONTENT 1048

     }

     if { $CONTENT > 0 } {

      HTTP::collect $CONTENT

     }

    } elseif { $HOST contains ".suit.domain.com" } {

    pool POOL-suit

    set KEY [crc32 $HOST$SRCADDR]

    persist hash $KEY 14400

     

    } elseif { $HOST contains ".suit.vf.com" } {

    pool POOL-vf-suit

    set KEY [crc32 $HOST$SRCADDR]

    persist hash $KEY 14400

    }

    }

    }

     

    when HTTP_REQUEST_DATA {

    if { (([HTTP::method] equals "POST") and ([HTTP::uri] contains "/amm/ampxml.jsp")) } {

     

    set HOST [string tolower [HTTP::host]]

    set SESSIONID [findstr [HTTP::payload] "uuid=" 5 20]

    set KEY [crc32 $HOST$SESSIONID]

     

    persist hash $KEY 30

     

    }

    } 

     

    • Dave_Pisarek's avatar
      Dave_Pisarek
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      Jul 18, 2019
      Thanks for the response. I will need to test this out and let you know how It went