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All browsers wait for some content (and sometimes some amount of time, too) before they start rendering a partial http response you have flushed to it across the network - but how much?
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In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks". The chunks are sent out and received independently of one another. No knowledge of the data stream outside the currently-being-processed chunk is necessary for both the sender and the receiver at any given time.
To enable chunked transfer encoding, set the value for AspEnableChunkedEncoding to True in the metabase for the site, the server, or the virtual directory that you want to enable chunked transfer encoding for. By default, the value is True, and it is set at the Web service level.
The chunk size is always given as a hexadecimal number. If that number is not directly followed by a CRLF, but a ; instead, you know that there is an extension. This extension is identified by its name ( chunk-ext-name ). If you never heard of that particular name, you MUST ignore it.
Chunking is a technique that HTTP servers use to improve responsiveness. Chunking can help you avoid situations where the server needs to obtain dynamic content from an external source and delays sending the response to the client until receiving all of the content so the server can calculate a Content-Length header.
I did some research on this today with an url endpoint accepting letting me configure chunk sizes and intervals.
Mac: text/html: image/jpeg: curl 7.24.0 4096 bytes Firefox 17 1024 bytes 1886 bytes Chrome 26.0.1410.65 1024 bytes 1885 bytes Chrome 29.0.1524.0 8 bytes 1885 bytes Safari 6.0.4 (8536.29.13) 1024 bytes whole file Windows XP: IE8 256 bytes Chrome 27.0.1453.94 1024 bytes Firefox 21 1024 bytes Opera 12.15 128 bytes AND 3s have passed Windows 7 IE9 256 bytes Windows 8: IE10 4096 bytes
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