Exit Zen
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Buffer Types
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To facilitate working with instances of the __ConstBufferSequence__ and __MutableBufferSequence__ concepts introduced in __Asio__, Beast treats those sequences as a special type of range. The following algorithms and wrappers are provided which transform these ranges efficiently using lazy evaluation. No memory allocations are used in the transformations; instead, they create lightweight iterators over the existing, unmodified memory buffers. Control of buffers is retained by the caller; ownership is not transferred.
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Buffer Algorithms and Types
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This is a more reliable version of [@boost:/doc/html/boost_asio/reference/buffer_size.html `net::buffer_size`] which is easier to use and also works for types which are convertible to `net::const_buffer` or `net::mutable_buffer`.
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This functions returns a new buffer sequence which, when iterated, traverses the sequence which would be formed if all of the input buffer sequences were concatenated. With this routine, multiple calls to a stream's `write_some` function may be combined into one, eliminating expensive system calls.
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This class represents the buffer sequence formed by concatenating two or more buffer sequences. This is type of object returned by [link beast.ref.boost__beast__buffers_cat `buffers_cat`].
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[link beast.ref.boost__beast__buffers_front `buffers_front`]
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This function returns the first buffer in a buffer sequence, or a buffer of size zero if the buffer sequence has no elements.
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This function returns a new buffer or buffer sequence which represents a prefix of the original buffers.
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This class represents the buffer sequence formed from a prefix of an existing buffer sequence. This is the type of buffer returned by [link beast.ref.boost__beast__buffers_prefix `buffers_prefix`].
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[link beast.ref.boost__beast__buffers_range `buffers_range`] [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`]
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This function returns an iterable range representing the passed buffer sequence. The values obtained when iterating the range will always be a constant buffer, unless the underlying buffer sequence is mutable, in which case the value obtained when iterating will be a mutable buffer. It is intended as a notational convenience when writing a ['range-for] statement over a buffer sequence.

The function [link beast.ref.boost__beast__buffers_range_ref `buffers_range`] maintains a copy of the buffer sequence, while [link beast.ref.boost__beast__buffers_range_ref `buffers_range_ref`] maintains a reference (in this case, the caller must ensure that the lifetime of the referenced buffer sequence extends until the range object is destroyed).
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[link beast.ref.boost__beast__buffers_suffix `buffers_suffix`]
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This class wraps the underlying memory of an existing buffer sequence and presents a suffix of the original sequence. The length of the suffix may be progressively shortened. This lets callers work with sequential increments of a buffer sequence.
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This function converts a buffer sequence to a `std::string`. It can be used for diagnostic purposes and tests.
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[link beast.ref.boost__beast__buffer_ref `buffer_ref`] [link beast.ref.boost__beast__ref `ref`]
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This function converts a beast buffer, that is to be passed by reference, into a buffer reference, that can be passed by value into asio functions.

It implements the __DynamicBuffer__v2__ concept.
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The __DynamicBuffer__ concept introduced in __Asio__ models a buffer sequence which supports an owning, resizable range. Beast provides this set of additional implementations of the dynamic buffer concept:
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Dynamic Buffer Implementations
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[link beast.ref.boost__beast__buffers_adaptor `buffers_adaptor`]
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