Error using check_http with proxy

Werner Flamme werner.flamme at
Mon Jun 8 09:25:12 CEST 2020

Am 03.06.2020 um 17:06 schrieb PAPPAS Stefanos:
> Hello,


> may I ask you for your support when using the plugin check_http?
> We are using this plugin in script for a opsview-check and was working fine over many years for specific http-calls.
> Recently there was a change in our infrastructure and we have to go via a proxy and a proxy-user to made the http-calls.
> Unfortunately we get an error when using the proxy:
> The invocation is:
> ./check_http -I "OUR-PROXY" -p PROXY-PORT -b 'PORXY_USER;PASSWORD' -H HOST -S -j CONNECT -u URL -vvv

If this isn't a copy&paste error, I'd try to replace the ; with a :,

at least the output when calling "check_http --help" tells me to do so

 -b, --proxy-authorization=AUTH_PAIR
    Username:password on proxy-servers with basic authentication

> and get:
> Entering CONNECT tunnel mode with proxy OUR-PROXY:PROXY-PORT to dst HOST:443
> User-Agent: check_http/v2.1.1 (monitoring-plugins 2.1.1)
> Proxy-Connection: keep-alive
> Host: HOST
> Receive response from proxy
> HTTP/1.1 407 authenticationrequired
> Can you please give us a hint what is wrong with this invocation. Why is the authentication with -b ignored?
> The same call with curl does work:
> curl -x "http://OUR-PROXY: PROXY-PORT" --proxy-user 'PORXY_USER;PASSWORD' https://HOST/URL
> Best regards
> Stefanos Pappas
> ITSO-MT Monitoring und Test
> AXA Konzern AG
> Abraham-Lincoln-Park 5
> 65189 Wiesbaden
> stefanos.pappas at
> Tel:  0611 363-14374
> Fax: 0611 363-44 14374
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