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Tracking user IP through a load balancer

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    Tracking user IP through a load balancer

    I use request.remote_addr to get the users IP address. That worked great when I was running only one server. Now I have three with a load balancer. The IP address that is returned now is that of the server the user is pointed to by the load balancer. Question is: How can I get the users IP address now that I am using load balancers?
    Last edited by mikeallenbrown; 03-24-2014, 08:15 PM. Reason: meant to say 'request.remote_addr'
    Mike Brown - Contact Me
    Programmatic Technologies, LLC
    Programmatic-Technologies.com
    Independent Developer & Consultant​​

    #2
    Re: Tracking user IP through a load balancer

    Do you mean request.remote_addr? Either way, maybe you can grab request.body on a test a5w page to a text file and study what you get from different users.

    <%a5
    cc = request.body
    save_to_file(cc,"c:\cc.txt")
    %>
    Steve Wood
    See my profile on IADN

    Comment


      #3
      Re: Tracking user IP through a load balancer

      Ahh....yes, I meant request.remote_addr.
      Mike Brown - Contact Me
      Programmatic Technologies, LLC
      Programmatic-Technologies.com
      Independent Developer & Consultant​​

      Comment


        #4
        Re: Tracking user IP through a load balancer

        Originally posted by Steve Wood View Post
        Do you mean request.remote_addr? Either way, maybe you can grab request.body on a test a5w page to a text file and study what you get from different users.

        <%a5
        cc = request.body
        save_to_file(cc,"c:\cc.txt")
        %>
        Tried this this morning. Request.body doesn't seem to do anything. The CC file is generated but it's empty.
        Mike Brown - Contact Me
        Programmatic Technologies, LLC
        Programmatic-Technologies.com
        Independent Developer & Consultant​​

        Comment


          #5
          Re: Tracking user IP through a load balancer

          Hi Mike - just wondering - what load balancer are you using and how do you find its performance? - and hi Steve.
          Peter
          Insanity: doing the same thing over and over again and expecting different results.
          Albert Einstein, (attributed)
          US (German-born) physicist (1879 - 1955)

          Comment


            #6
            Re: Tracking user IP through a load balancer

            I should have said try request.raw. body is the result of a POST and that is what I use most often in programming. Raw is everything. Check the Alpha documentation for "request" to find other request variables. - and Hi Peter
            Steve Wood
            See my profile on IADN

            Comment


              #7
              Re: Tracking user IP through a load balancer

              Originally posted by peteconway View Post
              Hi Mike - just wondering - what load balancer are you using and how do you find its performance? - and hi Steve.
              Peter
              We use RackSpace for our hosting needs. Very happy with their service. The load balancer is their proprietary software. Seems to work just fine. No complaints.
              Mike Brown - Contact Me
              Programmatic Technologies, LLC
              Programmatic-Technologies.com
              Independent Developer & Consultant​​

              Comment


                #8
                Re: Tracking user IP through a load balancer

                Originally posted by Steve Wood View Post
                I should have said try request.raw. body is the result of a POST and that is what I use most often in programming. Raw is everything. Check the Alpha documentation for "request" to find other request variables. - and Hi Peter
                Ah, I see. I'll try 'RAW' tomorrow morning. Thanks.
                Mike Brown - Contact Me
                Programmatic Technologies, LLC
                Programmatic-Technologies.com
                Independent Developer & Consultant​​

                Comment


                  #9
                  Re: Tracking user IP through a load balancer

                  Originally posted by mikeallenbrown View Post
                  I use request.remote_addr to get the users IP address. That worked great when I was running only one server. Now I have three with a load balancer. The IP address that is returned now is that of the server the user is pointed to by the load balancer. Question is: How can I get the users IP address now that I am using load balancers?
                  It seems to me that Alpha is not getting the users IP so how can any Alpha function work? Probably going to have to get the users ip forwarded from the load balancer software.
                  Win 10 64 Development, Win 7 64 WAS 11-1, 2, Win 10 64 AA-1,2, MySql, dbForge Studio The Best MySQL GUI Tool IMHO. http://www.devart.com/dbforge/mysql/studio/

                  Comment


                    #10
                    Re: Tracking user IP through a load balancer

                    As Frank mentioned, the issue is that the user does not connect to the server directly. Instead it connects to the load balancer, and then the load balancer connects to the server. This means that all the server knows is that a connection was initiated from the load balancer.

                    Talk to RackSpace about their load balancer options. Some have the ability to spoof the source IP address so it looks like the real client to the server. Others can set an optional header with the actual source IP address and you can read that value from Xbasic. X-Forwarded-For is a header used by many balancers and proxies to make the original source address available. You could easily read this header from your code.
                    Last edited by Lenny Forziati; 04-03-2014, 11:15 AM.

                    Lenny Forziati
                    Vice President, Internet Products and Technical Services
                    Alpha Software Corporation

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