In between BeginFlush and EndFlush calls, ASP.NET releases the current thread. Using these methods, you can create asynchronous modules and asynchronous handlers that incrementally send data to a client without tying up operating-system threads. However, because Flush is a synchronous call, iteratively calling Flush still consumes a thread for the duration of potentially long-running requests.ĪSP.NET 4.5 adds support for performing flushes asynchronously using the BeginFlush and EndFlush methods of the HttpResponse class. If the buffered response is large (for example, streaming a large file to a client), you must periodically call HttpResponse.Flush to send buffered output to the client and keep memory usage under control. ASP.NET then performs a single send operation of the accrued buffers at the very end of request processing. Normally ASP.NET buffers the response bytes as they are created by an application. Sending responses to an HTTP client can take considerable time when the client is far away or has a low-bandwidth connection. aspx pages and MVC ASP.NET controllers afterward. This lets you perform asynchronous processing on a request (for example, streaming a large file upload to a database), but still run.
#HTML EXECUTABLE 4.5 CODE#
For example, if some upstream code in the pipeline has already read the request entity using GetBufferedInputStream, you can still use HttpRequest.Form or HttpRequest.Files. However, as it reads, GetBufferedInputStream also copies the entity bytes into ASP.NET internal buffers so that downstream modules and handlers can still access the request entity. This new overload works like GetBufferlessInputStream, supporting both synchronous and asynchronous reads. The asynchronous Stream methods let you asynchronously read the request entity in chunks, while ASP.NET releases the current thread between each iteration of an asynchronous read loop.ĪSP.NET 4.5 has also added a companion method for reading the request entity in a buffered way: HttpRequest.GetBufferedInputStream.
The Stream object returned from GetBufferlessInputStream now implements both the BeginRead and EndRead methods. The Stream reference returned by ASP.NET 4.5 from HttpRequest.GetBufferlessInputStream supports both synchronous and asynchronous read methods. aspx page handlers and ASP.NET MVC controllers. ASP.NET 4.5 also gives you the ability to double-buffer an HTTP request entity, which provides easier integration with downstream HTTP handlers such as. However, it executed synchronously, which tied up a thread for the duration of a request.ĪSP.NET 4.5 supports the ability to read streams asynchronously on an HTTP request entity, and the ability to flush asynchronously. This method provided streaming access to the request entity. Vendor specific schemas (-moz-,-webkit)ĪSP.NET 4 introduced the ability to read an HTTP request entity as a stream using the HttpRequest.GetBufferlessInputStream method.Automatic renaming of matching tag when you rename an opening or closing tag.IntelliSense for code nuggets in attributes.Native Support in IIS 7 for ASP.NET Routing Project Sharing Between Visual Studio 2010 and Visual Studio 2012 Release Candidate (Project Compatibility)Ĭonfiguration Changes in ASP.NET 4.5 Website Templates Tuning garbage collection to optimize for memory.Using multi-Core JIT compilation for faster startup.
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