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Date: Mon, 16 Mar 2015 05:18:13 -0700 (MST)
From: richardgroote <richard.groote@gmail.com>
To: users@camel.apache.org
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 <CAGB5yNm2P4O2D0s3t5axEef5JsPa6eBfGx_oo7JkbjeWE+PwYA@mail.gmail.com>
Subject: Re: Cacehe-Controle header
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Hello,

We used the below header strategy on the servlet component to allow some
headers.


public class ParameterizedHttpHeaderFilterStrategy extends
DefaultHeaderFilterStrategy {
	private final String[] allowedOutHeaders;

	public ParameterizedHttpHeaderFilterStrategy(String allowedOutHeaders) {
		this.allowedOutHeaders = allowedOutHeaders.split(",");
	}

    protected void initialize() {
    	setOutFilter(getParameterizedOutFilter());
        
        setLowerCase(true);
        
        // filter headers begin with "Camel" or "org.apache.camel"
        // must ignore case for Http based transports
       
setOutFilterPattern("(?i)(Camel|org\\.apache\\.camel)[\\.|a-z|A-z|0-9]*");
    }

	protected Set<String> getParameterizedOutFilter() {
		Set<String> outFilter = new HashSet<String>();
		outFilter.add("content-length");
		outFilter.add("content-type");
		outFilter.add("host");
		// Add the filter for the Generic Message header
		// http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.5
		outFilter.add("cache-control");
		outFilter.add("connection");
		outFilter.add("date");
		outFilter.add("pragma");
		outFilter.add("trailer");
		outFilter.add("transfer-encoding");
		outFilter.add("upgrade");
		outFilter.add("via");
		outFilter.add("warning");
		
		for(String allowedOutHeader: allowedOutHeaders){
			outFilter.remove(allowedOutHeader.toLowerCase());
		}
		
		return outFilter;
	}
}


Kind regards,

Richard



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