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Forum Discussion

Moinul_Rony's avatar
Moinul_Rony
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May 15, 2014

How to destroy and replace a URI query value ?

Hi,   I am trying to figure out how I can replace a URI query value.   For example for this we will select the URL based on the HTTP:host   Incoming URL pattern   https://host/URI? http...
application delivery
devops
iRules
nitass_89166's avatar
nitass_89166
Icon for Noctilucent rankNoctilucent
May 19, 2014

e.g.

 config

[root@ve11a:Active:In Sync] config  tmsh list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  set q [URI::query [HTTP::uri] query]
  log local0. "q = $q"
  if { $q eq "A" } {
    log local0. "origin uri = [HTTP::uri]"
    HTTP::uri [string map "query=$q query=B" [HTTP::uri]]
    log local0. "new uri = [HTTP::uri]"
  }
}
}

 /var/log/ltm

[root@ve11a:Active:In Sync] config  tail -f /var/log/ltm
May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : q = A
May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : origin uri = /URI?query=A&other=somethingelse
May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : new uri = /URI?query=B&other=somethingelse
Moinul_Rony's avatar
Moinul_Rony
Icon for Altostratus rankAltostratus
May 27, 2014
Thanks nitass, that works perfectly. But now I have a slightly different requirement matching on the incoming hostname (red.x.com) I would want to add a value such as code=red and replace anything else with code=red example: Case 1: code=yellow gets replaced with code=red https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=yellow&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD code=red value not present -> add to the end of the URI https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD&code=red