private string GetCanonicalizedHeaders(System.Net.Http.Headers.HttpRequestHeaders requestHeaders, System.Net.Http.Headers.HttpContentHeaders contentHeaders = null)
{
string canonicalizedHeaders = "";
//assuming orderby does the lexigraphical ordering required here?
var headers = requestHeaders.Where(h => h.Key.StartsWith("x-ms-"));
if (contentHeaders != null)
{
headers = headers.Union(contentHeaders.Where(h => h.Key.StartsWith("x-ms-")));
}
headers = headers.GroupBy(g => g.Key).Select(g => g.First()).OrderBy(h => h.Key);
foreach (var header in headers)
{
canonicalizedHeaders += header.Key.ToLower() + ":";
foreach (var headerValue in header.Value)
{
canonicalizedHeaders += headerValue + ",";
}
canonicalizedHeaders = canonicalizedHeaders.TrimEnd(',') + "\n";
}
return(canonicalizedHeaders.TrimEnd('\n'));
}