/// <summary>
/// Full constructor.
/// </summary>
/// <param name="content">An existing <see cref="Windows.Web.Http.IHttpContent"/> implementation to be compressed.</param>
/// <param name="encodingType">The type of compression to use. Supported values are 'gzip' and 'deflate'.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="content"/> or <paramref name="encodingType"/> are null.</exception>
/// <exception cref="System.InvalidOperationException">Thrown if <paramref name="encodingType"/> is not 'gzip' or 'deflate'.</exception>
public CompressedWebContent(IHttpContent content, string encodingType)
{
if (content == null)
{
throw new ArgumentNullException("content");
}
if (encodingType == null)
{
throw new ArgumentNullException("encodingType");
}
this.encodingType = encodingType;
originalContent = content;
if (String.Compare(this.encodingType, "gzip", true) != 0 && String.Compare(this.encodingType, "deflate", true) != 0)
{
throw new InvalidOperationException(string.Format("Encoding '{0}' is not supported. Only supports gzip or deflate encoding.", this.encodingType));
}
headers = new HttpContentHeaderCollection();
originalContent.CopyHeadersTo(this);
headers.ContentEncoding.Add(new HttpContentCodingHeaderValue(encodingType));
headers.ContentLength = null;
}
private static async Task <IHttpContent> GetCompressedContent(IHttpContent originalContent)
{
var ms = new System.IO.MemoryStream();
try
{
await CompressOriginalContentStream(originalContent, ms).ConfigureAwait(false);
ms.Seek(0, System.IO.SeekOrigin.Begin);
var compressedContent = new Windows.Web.Http.HttpStreamContent(ms.AsInputStream());
originalContent.CopyHeadersTo(compressedContent);
compressedContent.Headers.ContentEncoding.Clear();
compressedContent.Headers.ContentEncoding.Add(new Windows.Web.Http.Headers.HttpContentCodingHeaderValue("gzip"));
compressedContent.Headers.ContentLength = (ulong)ms.Length;
originalContent.Dispose();
return(compressedContent);
}
catch
{
ms?.Dispose();
throw;
}
}
