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Chunked transfer encoding
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<p>Chunked transfer encoding is a <a href="/facts/Stream_(computing)/2jtBAp0U">streaming</a> data transfer mechanism available in <a href="/facts/Hypertext_Transfer_Protocol/TWtvf7JD">Hypertext Transfer Protocol</a> (HTTP) version 1.1, defined in RFC 9112 §7.1. 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. </p><p>Each chunk is preceded by its size in bytes. The transmission ends when a zero-length chunk is received. The <i>chunked</i> keyword in the <a href="/facts/List_of_HTTP_header_fields/hEkcQe2f">Transfer-Encoding</a> header is used to indicate chunked transfer. </p><p>Chunked transfer encoding is not supported in <a href="/facts/HTTP%2f2/L7V7rfeP">HTTP/2</a>, which provides its own mechanisms for data streaming. </p>