Rule Examples
There are endless combinations of predicates and handlers you can apply to your apps. Here's an assortment of examples to get you going. Many of these are contrived, but are just mean to show the range of syntax and functionality.
Rewrite a URL:
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path('/healthcheck') -> rewrite('/healthcheck.cfm')
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Stop processing rules for a given request:
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path(/healthcheck) -> done
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path(/healthcheck) -> response-code(503) // This rule is skipped
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For all GET requests, set a response header called
type with a value of get1
method(GET) -> set(attribute='%{o,type}', value=get)
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If the incoming path ends with
.css it will rewrite the request to .xcss and set a response header called rewritten to true.1
regex('(.*).css') -> { rewrite('${1}.xcss'); set(attribute='%{o,rewritten}', value=true) }
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Redirect all jpg requests to the same file name but with the png extension. The
${1} exchange attribute is used to reference the first regex group.1
regex('(.*).jpg#x27;) -> redirect('${1}.png')
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Set a request header for all requests that you can access in your CFML app just like a normal HTTP header.
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set(attribute='%{i,someHeader}', value=someValue)
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Set a Cache-Control response header only for default index pages(ie: index.html or index.cfm) in any folder.
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regex('.*/index\..*') or path-suffix('/') -> set(attribute='%{o,Cache-Control}', value='no-cache')
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Set a response header for a specific file.
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path('/freshcontent.html') -> set(attribute='%{o,Cache-Control}', value='no-cache')
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Match certain SES-style URLs and store the place holders (referenced as exchange attributes) into HTTP request headers.
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path-template('/product/{productid}') -> set(attribute='%{i,productid}', value='${productid}')
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In this example, hitting the server with
/restart skips the first rule, the second rule rewrites the request and then restarts back at the first rule which fires the second time through.1
path(/foo/a/b) -> response-code(503)
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path(/restart) -> { rewrite(/foo/a/b); restart; }
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Block access to a URL unless coming from a specific IP.
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path-prefix(/admin/) and not equals('%{REMOTE_IP}', 127.0.0.1) -> set-error( 404 )
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For more control over IP address matches, use the
ip-access-control() handler.1
path-prefix(value="/admin/") -> ip-access-control[default-allow=false, acl={'127.0.0.* allow'}, failure-status=404]
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Leading slash is NOT required. Both of these rules are the same:
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path(box.json) -> set-error( 404 )
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path(/box.json) -> set-error( 404 )
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It is not required to include
.*_ at the end of a regex path unless you’ve set full-match=true _1
regex( "^/tests/" ) -> set-error( 404 )
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regex( pattern='^/tests/.*", full-match=true ) -> set-error( 404 )
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Perform a regex a case insensitive search like so:
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regex(pattern="Googlebot", value="%{i,USER-AGENT}", case-sensitive=false ) -> set-error( 404 )
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When attribute values are not quoted, all leading and trailing whitespace will be trimmed. The following are all the same:
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path( "/foobar" )
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path(/foobar)
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path( /foobar )
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But this example is different. The leading and trailing spaces will be preserved in the path string.
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path( " /foobar " )
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Basic MVC rewrite:
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not regex( pattern='.*\.(bmp|gif|jpe?g|png|css|js|txt|xls|ico|swf|cfm|cfc|html|htm)#x27;, case-sensitive=false ) -> rewrite('/index.cfm/%{RELATIVE_PATH}')
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Add a CORs header to every request
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set(attribute='%{o,Access-Control-Allow-Origin}', value='*')
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Rewrite requests to a sub folder based on the domain
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equals( %{LOCAL_SERVER_NAME}, 'site1.com' ) -> rewrite( '/site1/%{REQUEST_URL}' )
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equals( %{LOCAL_SERVER_NAME}, 'site2.com' ) -> rewrite( '/site2/%{REQUEST_URL}' )
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equals( %{LOCAL_SERVER_NAME}, 'site3.com' ) -> rewrite( '/site3/%{REQUEST_URL}' )
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Custom SES URL rewrite that turns 6 digit product code into a query string. (If this rule goes in your
server.json, you'll need \\ in front of the dollar sign to escape it twice. Once for the system setting expansion and once for the JSON file.)1
regex( '^/product/([A-Z]{6})#x27; ) -> rewrite( '/product.cfm?productID=${1}' )
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Reject requests using an unknown host header.
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not equals( %{LOCAL_SERVER_NAME}, 'www.myDomain.com' ) -> set-error( 403 )
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Create reverse proxy
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path-prefix('/reports') -> reverse-proxy({'http://reports1.mydomain.com','http://reports2.mydomain.com'})
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