/// <summary>
/// Appends the values of the x-ms-* headers to the specified canonicalized string.
/// </summary>
/// <param name="canonicalizedString">The canonicalized string where the values are appended.</param>
/// <param name="request">The request where the values are read from.</param>
public static void AppendCanonicalizedCustomHeaders(CanonicalizedString canonicalizedString, HttpRequestMessage request)
{
CultureInfo sortingCulture = new CultureInfo("en-US");
#if WINDOWS_DESKTOP
StringComparer sortingComparer = StringComparer.Create(sortingCulture, false);
#else
StringComparer sortingComparer = new CultureStringComparer(sortingCulture, false);
#endif
SortedDictionary <string, IEnumerable <string> > headers = new SortedDictionary <string, IEnumerable <string> >(sortingComparer);
foreach (KeyValuePair <string, IEnumerable <string> > header in request.Headers)
{
string headerName = header.Key;
if (headerName.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
headers.Add(headerName.ToLowerInvariant(), header.Value);
}
}
if (request.Content != null)
{
foreach (KeyValuePair <string, IEnumerable <string> > header in request.Content.Headers)
{
string headerName = header.Key;
if (headerName.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
headers.Add(headerName.ToLowerInvariant(), header.Value);
}
}
}
StringBuilder canonicalizedElement = new StringBuilder(ExpectedHeaderNameAndValueLength);
foreach (KeyValuePair <string, IEnumerable <string> > header in headers)
{
canonicalizedElement.Clear();
canonicalizedElement.Append(header.Key);
canonicalizedElement.Append(HeaderNameValueSeparator);
int keyLength = canonicalizedElement.Length;
foreach (string value in header.Value)
{
canonicalizedElement.Append(value.TrimStart().Replace("\r\n", string.Empty));
canonicalizedElement.Append(HeaderValueDelimiter);
}
canonicalizedString.AppendCanonicalizedElement(canonicalizedElement.ToString(0, canonicalizedElement.Length - 1));
}
}
/// <summary>
/// Add x-ms- prefixed headers in a fixed order.
/// </summary>
/// <param name="headers">The headers.</param>
/// <param name="canonicalizedString">The canonicalized string.</param>
internal static void AddCanonicalizedHeaders(HttpRequestMessage request, CanonicalizedString canonicalizedString)
{
CultureInfo sortingCulture = new CultureInfo("en-US");
StringComparer sortingComparer = new CultureStringComparer(sortingCulture, false);
// Look for header names that start with x-ms-, then sort them in case-insensitive manner.
SortedDictionary<string, IEnumerable<string>> httpStorageHeaders = new SortedDictionary<string, IEnumerable<string>>(sortingComparer);
foreach (KeyValuePair<string, IEnumerable<string>> header in request.Headers)
{
if (header.Key.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
httpStorageHeaders.Add(header.Key.ToLowerInvariant(), header.Value);
}
}
if (request.Content != null)
{
foreach (KeyValuePair<string, IEnumerable<string>> header in request.Content.Headers)
{
if (header.Key.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
httpStorageHeaders.Add(header.Key.ToLowerInvariant(), header.Value);
}
}
}
// Now go through each header's values in the sorted order and append them to the canonicalized string.
foreach (KeyValuePair<string, IEnumerable<string>> header in httpStorageHeaders)
{
StringBuilder canonicalizedElement = new StringBuilder(header.Key);
string delimiter = ":";
// Go through values, unfold them, and then append them to the canonicalized element string.
foreach (string value in header.Value)
{
// Unfolding is simply removal of CRLF.
string unfoldedValue = value.TrimStart().Replace("\r\n", string.Empty);
// Append it to the canonicalized element string.
canonicalizedElement.Append(delimiter);
canonicalizedElement.Append(unfoldedValue);
delimiter = ",";
}
// Now, add this canonicalized element to the canonicalized header string.
canonicalizedString.AppendCanonicalizedElement(canonicalizedElement.ToString());
}
}
/// <summary>
/// Appends the values of the x-ms-* headers to the specified canonicalized string.
/// </summary>
/// <param name="canonicalizedString">The canonicalized string where the values are appended.</param>
/// <param name="request">The request where the values are read from.</param>
public static void AppendCanonicalizedCustomHeaders(CanonicalizedString canonicalizedString, HttpRequestMessage request)
{
CultureInfo sortingCulture = new CultureInfo("en-US");
StringComparer sortingComparer = new CultureStringComparer(sortingCulture, false);
SortedDictionary<string, IEnumerable<string>> headers = new SortedDictionary<string, IEnumerable<string>>(sortingComparer);
foreach (KeyValuePair<string, IEnumerable<string>> header in request.Headers)
{
string headerName = header.Key;
if (headerName.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
headers.Add(headerName.ToLowerInvariant(), header.Value);
}
}
if (request.Content != null)
{
foreach (KeyValuePair<string, IEnumerable<string>> header in request.Content.Headers)
{
string headerName = header.Key;
if (headerName.StartsWith(Constants.HeaderConstants.PrefixForStorageHeader, StringComparison.OrdinalIgnoreCase))
{
headers.Add(headerName.ToLowerInvariant(), header.Value);
}
}
}
StringBuilder canonicalizedElement = new StringBuilder(ExpectedHeaderNameAndValueLength);
foreach (KeyValuePair<string, IEnumerable<string>> header in headers)
{
canonicalizedElement.Clear();
canonicalizedElement.Append(header.Key);
canonicalizedElement.Append(HeaderNameValueSeparator);
foreach (string value in header.Value)
{
canonicalizedElement.Append(value.TrimStart().Replace("\r\n", string.Empty));
canonicalizedElement.Append(HeaderValueDelimiter);
}
canonicalizedString.AppendCanonicalizedElement(canonicalizedElement.ToString(0, canonicalizedElement.Length - 1));
}
}
