Check if header is present in request with apache

问题

How can I check if a header exist. I dont want to check if the value is different of "" I want to check if it really exist using:

RewriteCond

How can I do that inside htaccess file?

回答1:

You can use a condition like this to know if a header X-SomeHeader exists or not:

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:X-SomeHeader} !^$
RewriteRule ^ - [F]

回答2:

@anhubhava's answer was useful but logic inverted! it should be:

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:X-SomeHeader} ^$
RewriteRule ^ - [F]

or for an opposite example:

RewriteEngine On

# redirect foo to bar if request header X-SomeHeader exists
RewriteCond %{HTTP:X-SomeHeader} !^$
RewriteRule ^foo$ bar [L]

回答3:

Try this way

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:TID} ^.+$
RewriteRule ^ - [L]

RewriteRule ^ - [F]

来源：https://stackoverflow.com/questions/42865937/check-if-header-is-present-in-request-with-apache