Forum Discussion

YELEVISION_1746's avatar
YELEVISION_1746
Icon for Nimbostratus rankNimbostratus
Jul 15, 2015
Solved

respond with 417 expextection failed

trying to convert this netscaler config to an irule

 

add responder action act_417 respondwith "\"HTTP/1.1 417 Expectation Failed\r\n\r\n\"" add responder policy expect_100 "HTTP.REQ.HEADER(\"Expect\").set_text_mode(ignorecase).REGEX_MATCH(re/100-Continue/)" rp_act_expect_417

 

application delivery
devops
iRules
  • mimlo_61970's avatar
    mimlo_61970
    Jul 15, 2015

    I think this is what you are after. I don't have a good way to test. The content can be modified or removed as it is the body of the response. HTTP::respond 417 -version 1.1 on its own will return "HTTP/1.1 417 Expectation Failed" if that is all you want.

    when HTTP_REQUEST {
    if { [string tolower [HTTP::header "Expect"]] equals "100-continue" } {
        HTTP::respond -version 1.1 417 content "Expectation Failed"
    }
}

4 Replies

Sort By
  • mimlo_61970's avatar
    mimlo_61970
    Icon for Cumulonimbus rankCumulonimbus
    Jul 15, 2015

    I think this is what you are after. I don't have a good way to test. The content can be modified or removed as it is the body of the response. HTTP::respond 417 -version 1.1 on its own will return "HTTP/1.1 417 Expectation Failed" if that is all you want.

    when HTTP_REQUEST {
    if { [string tolower [HTTP::header "Expect"]] equals "100-continue" } {
        HTTP::respond -version 1.1 417 content "Expectation Failed"
    }
}
    • YELEVISION_1746's avatar
      YELEVISION_1746
      Icon for Nimbostratus rankNimbostratus
      Jul 20, 2015
      Thanks mimlo for your reply. It was really helpful. the irule works with minor modification. Please see below: when HTTP_REQUEST { if { [string tolower [HTTP::header "Expect"]] equals "100-continue" } { HTTP::respond 417 -version 1.1 content "Expectation Failed" } } The problem I am now facinfg is it is not closing the connection after sending the response. How do I get it to close the connection after responding?
    • mimlo_61970's avatar
      mimlo_61970
      Icon for Cumulonimbus rankCumulonimbus
      Jul 20, 2015
      Add an HTTP::close on the next line after the HTTP::respond
  • YELEVISION_1746's avatar
    YELEVISION_1746
    Icon for Nimbostratus rankNimbostratus
    Jul 16, 2015
    Thanks mimlo for your reply. It was really helpful. the irule works with minor modification. Please see below: when HTTP_REQUEST { if { [string tolower [HTTP::header "Expect"]] equals "100-continue" } { HTTP::respond 417 -version 1.1 content "Expectation Failed" } }