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Shawn_Conway's avatar
Shawn_Conway
Icon for Cirrus rankCirrus
Jan 07, 2020
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Too many redirects - app code..

We have one application behind our F5 load balancer that is causing an error of "too many redirects". We are doing SSL off loading and have a redirect from http-https on virtual server, but i dont think that is the issue. It is only one server behind the VS. in their code they specify the complete URL with https://

Any thoughts?

 

We have no issues with any other apps on this server

 

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  • SWJO's avatar
    SWJO
    Jan 08, 2020

    before SSL offload, server redirect 80 -> 443.

    after SSL offload, F5 get 443 and send 80 to server.

    then server redirect to 443. and F5 get 443 and send 80 to server.

    For this reason, as guys mentioned work redirection one place is best.

    for example, server don`t do redirect. and F5 redirect 80 -> 443. F5 offload receive 443 to 80.

     

    this is easiest way.

     

    other way is redirect selectively but that cost many resource.

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  • The_Y's avatar
    The_Y
    Icon for Cirrus rankCirrus
    Jan 07, 2020

    More likely another redirect is happening on the server.

    • Shawn_Conway's avatar
      Shawn_Conway
      Icon for Cirrus rankCirrus
      Jan 07, 2020

      Thanks yes they have it set somewhere in their code, but it works if the server is not going through F5.

  • SWJO's avatar
    SWJO
    Icon for Cirrostratus rankCirrostratus
    Jan 08, 2020

    before SSL offload, server redirect 80 -> 443.

    after SSL offload, F5 get 443 and send 80 to server.

    then server redirect to 443. and F5 get 443 and send 80 to server.

    For this reason, as guys mentioned work redirection one place is best.

    for example, server don`t do redirect. and F5 redirect 80 -> 443. F5 offload receive 443 to 80.

     

    this is easiest way.

     

    other way is redirect selectively but that cost many resource.

  • The_Y's avatar
    The_Y
    Icon for Cirrus rankCirrus
    Jan 07, 2020

    "too many redirects" is usually an indication of a redirect loop. So having a redirect in more than one place is not a good idea.

    If you are able to share configs it might be helpful

     

  • Shawn_Conway's avatar
    Shawn_Conway
    Icon for Cirrus rankCirrus
    Jan 09, 2020

    Correct it was in their code on the app server. We updated the code to get out of the loop thanks for everyone responding