ls-qpack

ls-qpack is a full-featured, tested, and fast QPACK library. The QPACK encoder produces excellent compression results based on an innovative mnemonic technique. It boasts the fastest Huffman encoder and decoder. The library is production quality. It is used in OpenLiteSpeed, LiteSpeed Web Server, and LiteSpeed Web ADC. The library is robust: * The encoder does not assume anything about usual HTTP headers such as Server or User-Agent. Instead, it uses its mnemonic compression technique to achieve good compression results for any input. * The decoder uses modulo arithmetic to track dynamic table insertions. This is in contrast to all other QPACK implementations, which use an integer counter, meaning that at some point, the decoder will break. * The decoder processes input in streaming fashion. The caller does not have to buffer the contents of HTTP/3 HEADERS frame. Instead, the decoder can be supplied input byte-by-byte.

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