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In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
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BuffersGenerator
BuffersGenerator
A [*BuffersGenerator] provides a generalized interface for generating serialized data for sequential processing.
A [*BuffersGenerator] provides a generalized interface for generating serialized data for sequential processing.
The generator will be asked to produce buffers. The consuming code will signal how much of the data has been consumed, and repeatedly query for buffers until no more data is available, or the generator indicates an error condition.
The generator will be asked to produce buffers. The consuming code will signal how much of the data has been consumed, and repeatedly query for buffers until no more data is available, or the generator indicates an error condition.
In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
Overloads of [link beast.ref.boost__beast__write `write`] and [link beast.ref.boost__beast__async_write `async_write`] operations are provided as free functions. These operations will consume the output of a [*BuffersGenerator] and process the data by writing them to a __SyncWriteStream__ or __AsyncWriteStream__ respectively.
Overloads of [link beast.ref.boost__beast__write `write`] and [link beast.ref.boost__beast__async_write `async_write`] operations are provided as free functions. These operations will consume the output of a [*BuffersGenerator] and process the data by writing them to a __SyncWriteStream__ or __AsyncWriteStream__ respectively.
Associated Types
Associated Types
* [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`]
* __ConstBufferSequence__
* [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`]
* __ConstBufferSequence__
Requirements
Requirements
In this table:
In this table:
* `G` denotes a type meeting the requirements of [*BuffersGenerator].
* `g` denotes a value of type `G`.
* `c` denotes a possibly-const value of type `G`.
* `n` is a value of type `std::size_t`.
* `ec` is a value of type [link beast.ref.boost__beast__error_code `error_code&`].
* `G` denotes a type meeting the requirements of [*BuffersGenerator].
* `g` denotes a value of type `G`.
* `c` denotes a possibly-const value of type `G`.
* `n` is a value of type `std::size_t`.
* `ec` is a value of type [link beast.ref.boost__beast__error_code `error_code&`].
Valid expressions
Valid expressions
Expression
Expression
Type
Type
Semantics, Pre/Post-conditions
Semantics, Pre/Post-conditions
45
`G::const_buffers_type`
 
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `g.prepare(ec)`.
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `g.prepare(ec)`.
`c.is_done()`
`c.is_done()`
`bool`
`bool`
Called to ask the generator for its completion status.

A generator has completed when no new buffer will be produced and previously produced buffers have been fully consumed.

[*Note:] The result of invoking `prepare` on `g` once it has completed is unspecified.
Called to ask the generator for its completion status.

A generator has completed when no new buffer will be produced and previously produced buffers have been fully consumed.

[*Note:] The result of invoking `prepare` on `g` once it has completed is unspecified.
English Chinese (Simplified Han script) Actions
A [*BuffersGenerator] provides a generalized interface for generating serialized data for sequential processing.
A [*BuffersGenerator] provides a generalized interface for generating serialized data for sequential processing.
The generator will be asked to produce buffers. The consuming code will signal how much of the data has been consumed, and repeatedly query for buffers until no more data is available, or the generator indicates an error condition.
The generator will be asked to produce buffers. The consuming code will signal how much of the data has been consumed, and repeatedly query for buffers until no more data is available, or the generator indicates an error condition.
In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
Overloads of [link beast.ref.boost__beast__write `write`] and [link beast.ref.boost__beast__async_write `async_write`] operations are provided as free functions. These operations will consume the output of a [*BuffersGenerator] and process the data by writing them to a __SyncWriteStream__ or __AsyncWriteStream__ respectively.
Overloads of [link beast.ref.boost__beast__write `write`] and [link beast.ref.boost__beast__async_write `async_write`] operations are provided as free functions. These operations will consume the output of a [*BuffersGenerator] and process the data by writing them to a __SyncWriteStream__ or __AsyncWriteStream__ respectively.
Associated Types
Associated Types
* [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`]
* __ConstBufferSequence__
* [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`]
* __ConstBufferSequence__
Requirements
Requirements
In this table:
In this table:
* `G` denotes a type meeting the requirements of [*BuffersGenerator].
* `g` denotes a value of type `G`.
* `c` denotes a possibly-const value of type `G`.
* `n` is a value of type `std::size_t`.
* `ec` is a value of type [link beast.ref.boost__beast__error_code `error_code&`].
* `G` denotes a type meeting the requirements of [*BuffersGenerator].
* `g` denotes a value of type `G`.
* `c` denotes a possibly-const value of type `G`.
* `n` is a value of type `std::size_t`.
* `ec` is a value of type [link beast.ref.boost__beast__error_code `error_code&`].
Valid expressions
Valid expressions
Expression
Expression
Type
Type
Semantics, Pre/Post-conditions
Semantics, Pre/Post-conditions
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `g.prepare(ec)`.
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `g.prepare(ec)`.
* [link beast.ref.boost__beast__http__message_generator `http::message_generator`]
* [link beast.ref.boost__beast__http__message_generator `http::message_generator`]
Algorithms
Algorithms
* [link beast.ref.boost__beast__async_write `async_write`]
* [link beast.ref.boost__beast__write `write`]
* [link beast.ref.boost__beast__async_write `async_write`]
* [link beast.ref.boost__beast__write `write`]

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In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
In this way, serializers can be adapted as [*BuffersGenerator], for example [link beast.ref.boost__beast__http__message_generator `http::message_generator`] which provides a type-erased interface for a variety of concrete http message types.
06/05/2026
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type: paragraph
Unit identifier
59099
Source string location
string ID 19
String age
06/05/2026
Last updated
06/05/2026
Source string age
06/05/2026
Translation file QuickBook file
doc/qbk/07_concepts/BuffersGenerator_zh_Hans.qbk, string 4