HTTP 1.1

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The first widely-adopted HTTP version with persistent connections (keep-alive) by default. Supports pipelining (sending multiple requests without waiting for responses) and chunked transfer encoding for streaming. Limited by head-of-line blocking — one slow response blocks all subsequent responses on that connection.

Key Properties

• Keep-Alive Default
• Pipelining
• Chunked Transfer

Related

• HTTP 2 (addresses head-of-line blocking with multiplexing)
• Keep-Alive (TCP-level persistent connections)

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networking http