public string CanonicalizeHttpRequest(HttpRequestMessage request, string accountName)
{
// Add the method (GET, POST, PUT, or HEAD).
CanonicalizedString canonicalizedString = new CanonicalizedString(request.Method.Method);
// Add the Content-* HTTP headers. Empty values are allowed.
if (request.Content != null)
{
canonicalizedString.AppendCanonicalizedElement(HttpWebUtility.CombineHttpHeaderValues(request.Content.Headers.ContentEncoding));
canonicalizedString.AppendCanonicalizedElement(HttpWebUtility.CombineHttpHeaderValues(request.Content.Headers.ContentLanguage));
AuthenticationUtility.AppendCanonicalizedContentLengthHeader(canonicalizedString, request);
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentMD5 == null) ? null :
Convert.ToBase64String(request.Content.Headers.ContentMD5));
canonicalizedString.AppendCanonicalizedElement((request.Content.Headers.ContentType == null) ? null :
request.Content.Headers.ContentType.ToString());
}
else
{
canonicalizedString.AppendCanonicalizedElement(null);
canonicalizedString.AppendCanonicalizedElement(null);
if (request.Method == HttpMethod.Put || request.Method == HttpMethod.Delete)
{
canonicalizedString.AppendCanonicalizedElement("0");
}
else
{
canonicalizedString.AppendCanonicalizedElement(null);
}
canonicalizedString.AppendCanonicalizedElement(null);
canonicalizedString.AppendCanonicalizedElement(null);
}
// Add the Date HTTP header (only if the x-ms-date header is not being used)
AuthenticationUtility.AppendCanonicalizedDateHeader(canonicalizedString, request);
// Add If-* headers and Range header
canonicalizedString.AppendCanonicalizedElement(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.IfModifiedSince));
canonicalizedString.AppendCanonicalizedElement(CommonUtility.GetFirstHeaderValue(request.Headers.IfMatch));
canonicalizedString.AppendCanonicalizedElement(CommonUtility.GetFirstHeaderValue(request.Headers.IfNoneMatch));
canonicalizedString.AppendCanonicalizedElement(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.IfUnmodifiedSince));
canonicalizedString.AppendCanonicalizedElement((request.Headers.Range == null) ? null :
CommonUtility.GetFirstHeaderValue(request.Headers.Range.Ranges));
// Add any custom headers
AuthenticationUtility.AppendCanonicalizedCustomHeaders(canonicalizedString, request);
// Add the canonicalized URI element
string resourceString = AuthenticationUtility.GetCanonicalizedResourceString(request.RequestUri, accountName);
canonicalizedString.AppendCanonicalizedElement(resourceString);
return(canonicalizedString.ToString());
}