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Brandon_High_10's avatar
Brandon_High_10
Icon for Nimbostratus rankNimbostratus
Nov 22, 2004

"Multiple method invocations not allowed" error

I'm getting a strange error in /var/log/ltm. It doesn't seem to affect anything, but I'm still concerned about the entries.

 

 

A pseudo-summary:

 

 

 

when HTTP_REQUEST {

 

set host "[HTTP::host]"

 

 

if { [string first "." ${host}] < 0 } {

 

set host "[HTTP::host].domain.com"

 

HTTP::redirect "http://${host}[HTTP::uri]"

 

}

 

 

 

( blah, blah, blah )

 

 

 

if { [HTTP::path] starts_with "/foo"} {

 

pool portal

 

}

 

else {

 

HTTP::redirect "http://${host}/foo/bar/baz"

 

}

 

}

 

 

 

 

The log entries look like:

 

 

Nov 22 15:48:19 tmm tmm[662]: 01220001:3: TCL error: Rule gwiz-qa - Operation not supported. Multiple method invocations not allowed (line 1) invoked from within "HTTP::redirect "http://${host}/foo/bar/baz""

 

Nov 22 15:48:19 tmm tmm[662]: 01220001:3: TCL error: Rule gwiz-qa - Operation not supported. Multiple method invocations not allowed (line 49) invoked from within "HTTP::redirect "http://${host}/foo/bar/baz""

 

application delivery
dev
devops
iRules

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  • unRuleY_95363's avatar
    unRuleY_95363
    Historic F5 Account
    Nov 22, 2004
    First, the cryptic message should really read:

     

     

    Multiple redirect/respond invocations not allowed (line 1) invoked from within "HTTP::redirect "http://${host}/foo/bar/baz"

     

     

    What is happening is that your rule is first setting a HTTP::redirect because the host does not contain a ".". Then, later, you are again invoking a redirect because the path does not start with "/foo". You can only redirect once for a connection in a given rule. So, you could simply fix this by adding a "return" after the first redirect. Of course, depending on your application, you could also fix it by saving the redirect string off in a variable and then doing the redirect at the end of the rule event if the redirect variable is not empty.
  • Brandon_High_10's avatar
    Brandon_High_10
    Icon for Nimbostratus rankNimbostratus
    Nov 23, 2004
    Ah, thanks. I assumed there was an implied return after a redirect, similar to the 4.5 behavior.

     

     

    On a similar thread, does a "pool" command have an implied return as well, or do I need to explicitly state it?