Connecting to remote host

Guillaume Quintard guillaume at varnish-software.com
Thu Dec 19 09:19:44 UTC 2019


The backend portion of the vcl only handles the TCP part of the equation.
If your backend expect a specific host, you need to either have the client
give it, or have varnish override it.

Try curl -I localhost/your/file -H "host: whatever.your.host.is.com"

On Thu, Dec 19, 2019, 09:02 Varun Nath <varunnath86 at gmail.com> wrote:

> Yes, I tried with http://locahost, but that is expected, right? since the
> backend server is configured in VCL file. Sorry if I am wrong
>
> On Thu, Dec 19, 2019 at 2:29 PM Guillaume Quintard <
> guillaume at varnish-software.com> wrote:
>
>> Note: please keep the mailing list CC'd
>>
>> Check the host header you are sending to the backend. Usually, a 404
>> arises because the URL and/or the host wrong.
>>
>> I'm thinking you possibly tested varnish requesting something like
>> http://localhost/your/test/file, but your backend isn't configured to
>> reply to the "localhost" host
>>
>> On Thu, Dec 19, 2019, 08:55 Varun Nath <varunnath86 at gmail.com> wrote:
>>
>>> Thanks again for the quick response.
>>> I have checked the log and getting the expected IP address in *BackendStart
>>> *parameter.  Sorry I didnt get what you mean by  you need to change *the
>>> host header before sending the request to the backend. *Could you
>>> please elaborate a little bit?
>>>
>>> On Thu, Dec 19, 2019 at 2:20 PM Guillaume Quintard <
>>> guillaume at varnish-software.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> Use varnishlog -b (with possibly -d) to see the backend transactions
>>>> and see what IP is being used (is it the right one). It could also be that
>>>> you need to change the host header before sending the request to the
>>>> backend.
>>>>
>>>> Cheers,
>>>>
>>>>
>>>> On Thu, Dec 19, 2019, 08:39 Varun Nath <varunnath86 at gmail.com> wrote:
>>>>
>>>>> Hello,
>>>>> I need to connect to a remote host from local VCL config file. I have
>>>>> added the backend config as below
>>>>>
>>>>> backend default {
>>>>>     .host = "remote.host.com";
>>>>> }
>>>>>
>>>>> But am getting Page not available message. Do I miss something?
>>>>> Thanks in advance
>>>>>
>>>>> --
>>>>> VARUN NATH A V
>>>>> _______________________________________________
>>>>> varnish-misc mailing list
>>>>> varnish-misc at varnish-cache.org
>>>>> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>>>>>
>>>>
>>>
>>> --
>>> VARUN NATH A V
>>>
>>
>
> --
> VARUN NATH A V
>
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