/// <summary>
/// Invoke the middleware.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task Invoke(HttpContext context)
{
if (!_provider.CheckRequestAcceptsCompression(context))
{
await _next(context);
return;
}
var bodyStream = context.Response.Body;
var originalBufferFeature = context.Features.Get <IHttpBufferingFeature>();
var originalSendFileFeature = context.Features.Get <IHttpSendFileFeature>();
var originalStartFeature = context.Features.Get <IHttpResponseStartFeature>();
var originalCompressionFeature = context.Features.Get <IHttpsCompressionFeature>();
var bodyWrapperStream = new BodyWrapperStream(context, bodyStream, _provider,
originalBufferFeature, originalSendFileFeature, originalStartFeature);
context.Response.Body = bodyWrapperStream;
context.Features.Set <IHttpBufferingFeature>(bodyWrapperStream);
context.Features.Set <IHttpsCompressionFeature>(bodyWrapperStream);
if (originalSendFileFeature != null)
{
context.Features.Set <IHttpSendFileFeature>(bodyWrapperStream);
}
if (originalStartFeature != null)
{
context.Features.Set <IHttpResponseStartFeature>(bodyWrapperStream);
}
try
{
await _next(context);
await bodyWrapperStream.FinishCompressionAsync();
}
finally
{
context.Response.Body = bodyStream;
context.Features.Set(originalBufferFeature);
context.Features.Set(originalCompressionFeature);
if (originalSendFileFeature != null)
{
context.Features.Set(originalSendFileFeature);
}
if (originalStartFeature != null)
{
context.Features.Set(originalStartFeature);
}
}
}
/// <summary>
/// Invoke the middleware.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task Invoke(HttpContext context)
{
if (!_provider.CheckRequestAcceptsCompression(context))
{
await _next(context);
return;
}
var bodyStream = context.Response.Body;
var originalBufferFeature = context.Features.Get <IHttpBufferingFeature>();
var originalSendFileFeature = context.Features.Get <IHttpSendFileFeature>();
var bodyWrapperStream = new BodyWrapperStream(context, bodyStream, _provider,
originalBufferFeature, originalSendFileFeature);
context.Response.Body = bodyWrapperStream;
context.Features.Set <IHttpBufferingFeature>(bodyWrapperStream);
if (originalSendFileFeature != null)
{
context.Features.Set <IHttpSendFileFeature>(bodyWrapperStream);
}
try
{
await _next(context);
// This is not disposed via a using statement because we don't want to flush the compression buffer for unhandled exceptions,
// that may cause secondary exceptions.
bodyWrapperStream.Dispose();
}
finally
{
context.Response.Body = bodyStream;
context.Features.Set(originalBufferFeature);
if (originalSendFileFeature != null)
{
context.Features.Set(originalSendFileFeature);
}
}
}