redirects with get / post

If you look through the IIS logs there will most likely be a get request. When a POST request get a redirect it will be retried as a get request. you can use the following iRule to force the browser to send the request to the correct location

https://devcentral.f5.com/wiki/iRules.HTTP_POST_redirectNew118.ashx

the basic issue is that you can't redirect (HTTP 3xx) a POST request, that is simply how redirects were designed.

the iRule that Richard mentions uses a trick to still be able to get the POST data through. it builds a piece of javascript that will take the information from the POST and send it again when the page loads.

if you want to include this into your code you could include the HTTP_REQUEST section completely. add a HTTP_REQUEST_DATA section and build a similar switch statement for the different POST urls based on URI.

Not to throw the conversation into a tangent, but are you certain that the iRule works with GET requests? You're using a glob switch but no glob patterns, so not sure where the matches are being made. Here's a slightly modified version of your iRule:

when HTTP_REQUEST { 
    if { ( [string tolower [HTTP::host]]) contains "unity.mysite.com" } { 
        switch -glob [string tolower [HTTP::uri]] { 
            "*akcelrons.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity/akcelrons.asmx" 
            } 
            "*credispher.asmx*" { 
                HTTP::redirect "http://webservice.mysite.com/Unity/credispher.asmx.asmx" 
            } 
            "*interfaceser.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity/interfaceser.asmx" 
            } 
            "*meridian.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity[HTTP::uri]" 
            } 
            "*unitysale.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity/unitysale.asmx" 
            } 
            "*unitywep.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity/unitysale.asmx" 
            } 
            "*weblott.asmx*" { 
                HTTP::redirect "https://webservice.mysite.com/Unity/Unityweblott.asmx" 
            } 
        } 
    } 
}

First, thank you all for your help, Still having trouble understanding. Below is the exact irule from the LTM, other comments are from the Web Developer. Im in the middle F5 Admin and the HTTP Developer says it fails the Post. So help me to bridge the gap. Lets startover.. Kevin, let me give you the current iRule, below. Richard, Boneyard, are your comments for me of http developer?

when HTTP_REQUEST { if { ([string tolower [HTTP::host]]) contains "unitynet.mysite.com" } { switch -glob -- [string tolower [HTTP::uri]] { "akcelerantws.asmx" { HTTP::redirect "https://webservices.mysite.com/Unity/Akcelerantws.asmx" } "credispherewsv2.asmx" { HTTP::redirect "http://webservices.mysite.com/Unity/CrediSphereWSV2.asmx" } "interfaceservice.asmx" { HTTP::redirect "https://webservices.mysite.com/Unity/InterfaceService.asmx" } ::"meridianlinkws.asmx" { HTTP::redirect "https://webservices.mysite.com/Unity[HTTP::uri]" } "unitysailws.asmx" { HTTP::redirect "https://webservices.mysite.com/Unity/UnitySAILWS.asmx"

So are you saying that a POST request doesn't get redirected at all, or that a POST request gets redirected, but is turned into a GET?

Ok guys, so I have my original iRule and sample link from Richard. Now how in the heck to I merge these irule. Im not at the admin level need to script this, so I f you could help please.

So how can I merge these to iRules.

e.g.

root@(ve11a)(cfg-sync Not All Devices Synced)(Active)(/Common)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.20.111:80
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        myrule
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 28
}
root@(ve11a)(cfg-sync Not All Devices Synced)(Active)(/Common)(tmos) list ltm rule myrule
ltm rule myrule {
    when HTTP_REQUEST {
  if { ([string tolower [HTTP::host]]) contains "unitynet.mysite.com" } {
    switch -glob -- [string tolower [HTTP::uri]] {
      "*akcelerantws.asmx*" { set ext_url "https://webservices.mysite.com/Unity/Akcelerantws.asmx" }
      "*credispherewsv2.asmx*" { set ext_url "http://webservices.mysite.com/Unity/CrediSphereWSV2.asmx" }
      "*interfaceservice.asmx*" { set ext_url "https://webservices.mysite.com/Unity/InterfaceService.asmx" }
      "*meridianlinkws.asmx*" { set ext_url "https://webservices.mysite.com/Unity[HTTP::uri]" }
      "*unitysailws.asmx*" { set ext_url "https://webservices.mysite.com/Unity/UnitySAILWS.asmx" }
      "*unityweblet.asmx*" { set ext_url "https://webservices.mysite.com/Unity/UnityWeblet.asmx" }
      "*weblet.asmx*" { set ext_url "https://webservices.mysite.com/Unity/UnityWeblet.asmx" }
      default {
        return
      }
    }
  } else {
    return
  }

  if { [string tolower [HTTP::method]] eq "get" } {
    HTTP::redirect $ext_url
  } elseif { [string tolower [HTTP::method]] eq "post" } {
    if { [HTTP::header exists "Content-Length"] } {
      if { [HTTP::header "Content-Length"] > 1048000 }{
        set content_length 1048000
      } else {
        set content_length [HTTP::header "Content-Length"]
      }
    } else {
      set content_length 1048000
    }
    if { $content_length > 0 } {
      HTTP::collect $content_length
    }
  } else {
     do something
  }
}
when HTTP_REQUEST_DATA {
  set content "< script type=text/javascript language=javascript> \
    function s(){ document.f.submit(); }  \
    "
  foreach p [split [HTTP::payload] &] {
    set name  [URI::decode [getfield $p = 1]]
    set value [URI::decode [getfield $p = 2]]
    set content "${content}"
  }
  set content "${content}"
  HTTP::respond 200 content $content
}
}

 GET

[root@ve11a:Active:Not All Devices Synced] config  curl -i http://172.28.20.111/something/akcelerantws.asmx -H "Host: unitynet.mysite.com"
HTTP/1.0 302 Found
Location: https://webservices.mysite.com/Unity/Akcelerantws.asmx
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

 POST

[root@ve11a:Active:Not All Devices Synced] config  curl -i --data "para1=value1&para2=value2" http://172.28.20.111/something/akcelerantws.asmx -H "Host: unitynet.mysite.com"
HTTP/1.0 200 OK
Server: BigIP
Connection: Keep-Alive
Content-Length: 372

< script type=text/javascript language=javascript>  function s(){ document.f.submit(); }   

I trying to work on it and so are our developers. But we are having a problem understanding. Even if you could help with a sample. So I have the first part is by iRule and second part is your recommendation. We are havinging problems adding our current irule to your sample.