HeaderUtility.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Extensions / Util / HeaderUtility.cs / 1305376 / HeaderUtility.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Util { 
    using System; 

    internal static class HeaderUtility { 
        public static bool IsEncodingInAcceptList(string acceptEncodingHeader, string expectedEncoding) {
            if (String.IsNullOrEmpty(acceptEncodingHeader)) {
                return false;
            } 

            foreach (string encoding in acceptEncodingHeader.Split(',')) { 
                string e = encoding.Trim(); 

                // This code will typically handle all existing browsers, which 
                // use "encoding1, encoding2" for this header.
                // IE, Firefox and Safari are sending "gzip, deflate"
                // Opera is sending "deflate, gzip, x-gzip, identity, *;q=0"
                // There is a currently hypothetical case where a browser would use the quantified syntax 
                // on specific encodings ("encoding1;q=0.8, encoding2 ;q=0.2") which we don't handle here.
                // For those situations, the browser would get the uncompressed version. 
                // See RFC 2068 for details. 
                if (String.Equals(e, expectedEncoding, StringComparison.Ordinal)) {
                    return true; 
                }
            }

            // no match found 
            return false;
        } 
 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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