This curl recipe shows you how to add a referrer to a curl request. Web servers often check the referrer before allowing the request, so you better know how to set it. To set a referrer use the
-e 'https://url.com' argument.
Add a Referrer
curl -e 'https://google.com?q=cats' http://catonmat.net
This recipe uses the
-e argument sets the HTTP referrer to
https://google.com?q=cats and makes a GET request to
https://catonmat.net. When the owner of catonmat.net will look in his access.log files, he'll think that someone came from Google while searching for cats, but in reality, we'll have bamboozled the owner catonmat.net.
Send an Empty Referrer
curl -e '' http://catonmat.net
This recipe also uses the
-e option to set the referer but it leaves the argument empty
'' (set to nothing). This clears the value part of
Referer: HTTP header and curl send an empty HTTP referer.
Send a Referer via the -H argument
curl -H 'Referer: https://digg.com' http://catonmat.net
This recipe is for pros only. Normally, you'd send the referrer via
-e (as illustrated in the previous recipes) but you can also send it via the
-H 'Referer: URL' argument that sets the full HTTP header. In this recipe, the HTTP header is set to
Referer: https://digg.com so the web server at catonmat.net will think the request came from this address.
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