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Usage
Usage用法
06/16/2026
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A body whose `value_type` is `std::vector`. Insertion complexity is amortized constant time, while capacity grows geometrically. Messages with this body type may be serialized and parsed.
A body whose该消息体类型的 `value_type` is为 `std::vector`. Insertion complexity is amortized constant time, while capacity grows geometrically. Messages with this body type may be serialized and parsed.。插入操作的均摊复杂度为常数时间，容量以几何级数增长。带有该消息体类型的消息支持序列化和解析操作。
06/16/2026
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[link beast.ref.boost__beast__http__vector_body `vector_body`]
[link beast.ref.boost__beast__http__vector_body `vector_body`]
06/16/2026
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A body whose `value_type` is `std::basic_string` or `std::string`. Insertion complexity is amortized constant time, while capacity grows geometrically. Messages with this body type may be serialized and parsed. This is the type of body used in the examples.
A body whose该消息体类型的 `value_type` is为 `std::basic_string` or或 `std::string`. Insertion complexity is amortized constant time, while capacity grows geometrically. Messages with this body type may be serialized and parsed. This is the type of body used in the examples.。插入操作的均摊复杂度为常数时间，容量以几何级数增长。带有该消息体类型的消息支持序列化和解析操作。此类型即为示例中使用的消息体类型。
06/16/2026
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[link beast.ref.boost__beast__http__string_body `string_body`]

[link beast.ref.boost__beast__http__basic_string_body `basic_string_body`]
[link beast.ref.boost__beast__http__string_body `string_body`]

[link beast.ref.boost__beast__http__basic_string_body `basic_string_body`]
06/16/2026
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A body whose `value_type` is a [@boost:/libs/core/doc/html/core/span.html `span`], a non-owning reference to a single linear buffer of bytes. Messages with this body type may be serialized and parsed.
A body whose该消息体类型的 `value_type` is a为 [@boost:/libs/core/doc/html/core/span.html `span`], a non-owning reference to a single linear buffer of bytes. Messages with this body type may be serialized and parsed.，这是一个指向单个线性字节缓冲区的非拥有引用。带有该消息体类型的消息可进行序列化和解析。
06/16/2026
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[link beast.ref.boost__beast__http__span_body `span_body`]
[link beast.ref.boost__beast__http__span_body `span_body`]
06/16/2026
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This body is represented by a file opened for either reading or writing. Messages with this body may be serialized and parsed. HTTP algorithms will use the open file for reading and writing, for streaming and incremental sends and receives.
该消息体类型使用通过一个已打开的文件来表示，该文件可用于读取或写入。带有该消息体类型的消息支持序列化和解析操作。HTTP 算法会利用这个已打开的文件执行读写操作，从而支持流式传输及增量式数据收发。
06/16/2026
User avatar Bstran

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This body is represented by a file opened for either reading or writing. Messages with this body may be serialized and parsed. HTTP algorithms will use the open file for reading and writing, for streaming and incremental sends and receives.
This body is represented by a file opened for either reading or writing. Messages with this body may be serialized and parsed. HTTP algorithms will use the open file for reading and writing, for streaming and incremental sends and receives.该消息体类型使用一个已打开的文件来表示，该文件可用于读取或写入。带有该消息体类型的消息支持序列化和解析操作。HTTP 算法会利用这个已打开的文件执行读写操作，从而支持流式传输及增量式数据收发。
06/16/2026
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[link beast.ref.boost__beast__http__file_body `file_body`]

[link beast.ref.boost__beast__http__basic_file_body `basic_file_body`]
[link beast.ref.boost__beast__http__file_body `file_body`]

[link beast.ref.boost__beast__http__basic_file_body `basic_file_body`]
06/16/2026
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A special body with an empty `value_type` indicating that the message has no body. Messages with this body may be serialized and parsed; however, body octets received while parsing a message with this body will generate a unique error.
A special body with an empty `value_type` indicating that the message has no body. Messages with this body may be serialized and parsed; however, body octets received while parsing a message with this body will generate a unique error.该消息体类型为一个特殊的空消息体，其 `value_type` 为空，表示消息不包含消息体。带有该消息体类型的消息支持序列化和解析操作；但在解析过程中如果接收到消息体数据，则会生成一个特定的错误。
06/16/2026
User avatar Bstran

Translation changed
[link beast.ref.boost__beast__http__empty_body `empty_body`]
[link beast.ref.boost__beast__http__empty_body `empty_body`]
06/16/2026
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A body whose `value_type` is a __DynamicBuffer__. It inherits the insertion complexity of the underlying choice of dynamic buffer. Messages with this body type may be serialized and parsed.
A body whose该消息体类型的 `value_type` is a为一个 __DynamicBuffer__. It inherits the insertion complexity of the underlying choice of dynamic buffer. Messages with this body type may be serialized and parsed.。其插入操作的复杂度取决于底层动态缓冲区的选择。带有该消息体类型的消息支持序列化和解析操作。
06/16/2026
User avatar Bstran

Translation changed
[link beast.ref.boost__beast__http__dynamic_body `dynamic_body`]

[link beast.ref.boost__beast__http__basic_dynamic_body `basic_dynamic_body`]
[link beast.ref.boost__beast__http__dynamic_body `dynamic_body`]

[link beast.ref.boost__beast__http__basic_dynamic_body `basic_dynamic_body`]
06/16/2026
User avatar Bstran

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A body whose [link beast.ref.boost__beast__http__buffer_body__value_type `value_type`] holds a raw pointer and size to a caller-provided buffer. This allows for serialization of body data coming from external sources, and incremental parsing of message body content using a fixed size buffer.
A body whose该消息体类型的 [link beast.ref.boost__beast__http__buffer_body__value_type `value_type`] holds a raw pointer and size to a caller-provided buffer. This allows for serialization of body data coming from external sources, and incremental parsing of message body content using a fixed size buffer.包含一个原始指针及其长度，指向调用方提供的缓冲区。该类型支持对来自外部来源的消息体数据进行序列化，并使用固定大小的缓冲区进行消息体内容的增量解析。
06/16/2026
User avatar Bstran

Translation changed
A body whose [link beast.ref.boost__beast__http__buffer_body__value_type `value_type`] holds a raw pointer and size to a caller-provided buffer. This allows for serialization of body data coming from external sources, and incremental parsing of message body content using a fixed size buffer.
A body whose [link beast.ref.boost__beast__http__buffer_body__value_type `value_type`] holds a raw pointer and size to a caller-provided buffer. This allows for serialization of body data coming from external sources, and incremental parsing of message body content using a fixed size buffer.
06/16/2026
User avatar Bstran

Translation changed
[link beast.ref.boost__beast__http__buffer_body `buffer_body`]
[link beast.ref.boost__beast__http__buffer_body `buffer_body`]
06/16/2026
User avatar Bstran

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Beast defines the __Body__ concept, which determines both the type of the [link beast.ref.boost__beast__http__message.body `message::body`] member (as seen in the diagram above) and may also include algorithms for transferring buffers in and out. These algorithms are used during parsing and serialization. Users may define their own body types which meet the requirements, or use the ones that come with the library:
Beast defines the __Body__ concept, which determines both the type of the [link beast.ref.boost__beast__http__message.body `message::body`] member (as seen in the diagram above) and may also include algorithms for transferring buffers in and out. These algorithms are used during parsing and serialization. Users may define their own body types which meet the requirements, or use the ones that come with the library:定义 __Body__ 概念，该概念决定 [link beast.ref.boost__beast__http__message.body `message::body`] 成员的类型，同时还可包含用于传入和传出缓冲区的算法。这些算法在解析和序列化过程中使用。用户可以定义满足要求的自定义消息体类型，也可以直接使用该库提供的现有类型：
06/16/2026
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/// An HTTP header
template<
bool isRequest, // `true` for requests, `false` for responses
class Fields = fields> // The type of container to store the fields
class header;
/// HTTP 头部类
template<
bool isRequest, // 若为请求则为 true，若为响应则为 false
class Fields = fields> // 用于存储字段的容器类型
class header;
06/16/2026
User avatar Bstran

Translation changed
/// A typical HTTP response
template<class Body, class Fields = fields>
using response = message<false, Body, Fields>;
/// 典型的 HTTP 响应类型
template<class Body, class Fields = fields>
using response = message<false, Body, Fields>;
06/16/2026

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