User avatar Bstran

Translation changed
Read a __message__ from a __SyncReadStream__.
Read a __message__ from a从 __SyncReadStream__. 读取 __message__。
06/16/2026
User avatar Bstran

Translation changed
[link beast.ref.boost__beast__http__read.overload3 [*read]]
[link beast.ref.boost__beast__http__read.overload3 [*read]]
06/16/2026
User avatar Bstran

Translation changed
Description
Description描述
06/16/2026
User avatar Bstran

Translation changed
Name
Name名称
06/16/2026
User avatar Bstran

Translation changed
Message Stream Operations
Message Stream Operations消息流操作
16
06/16/2026
User avatar Bstran

Translation changed
Beast provides synchronous and asynchronous algorithms to parse and serialize HTTP/1 wire format messages on streams. These functions form the message-oriented stream interface:
Beast provides synchronous and asynchronous algorithms to parse and serialize HTTP/1 wire format messages on streams. These functions form the message-oriented stream interface:提供同步和异步算法，用于在流上解析和序列化 HTTP/1 线路格式的消息。这些函数构成面向消息的流接口：
06/16/2026
User avatar Bstran

Translation changed
Message Stream Operations
Message Stream Operations消息流操作
10
06/16/2026
User avatar Bstran

Contributor joined
Contributor joined 06/16/2026
User avatar admin

Resource updated
File “doc/qbk/04_http/03_streams_zh_Hans.qbk” was added. 06/05/2026
User avatar admin

String added in the repository
The completion handler is called with the number of bytes written to the stream, which includes protocol specific data such as the delimiters in the header and line endings. The number may be used to measure the amount of data transferred, or it may be ignored as in the example.
The completion handler is called with the number of bytes written to the stream, which includes protocol specific data such as the delimiters in the header and line endings. The number may be used to measure the amount of data transferred, or it may be ignored as in the example.
06/05/2026
User avatar admin

String added in the repository
The asynchronous version could be used instead:
The asynchronous version could be used instead:
06/05/2026
User avatar admin

String added in the repository
A set of free functions allow serialization of an entire HTTP message to a stream. This example constructs and sends an HTTP response:
A set of free functions allow serialization of an entire HTTP message to a stream. This example constructs and sends an HTTP response:
06/05/2026
User avatar admin

String added in the repository
Writing
Writing
06/05/2026
User avatar admin

String added in the repository
If a read stream algorithm cannot complete its operation without exceeding the maximum specified size of the dynamic buffer provided, the error [link beast.ref.boost__beast__http__error `buffer_overflow`] is returned. This is one technique which may be used to impose a limit on the maximum size of an HTTP message header for protection from buffer overflow attacks. The following code will print the error message:
If a read stream algorithm cannot complete its operation without exceeding the maximum specified size of the dynamic buffer provided, the error [link beast.ref.boost__beast__http__error `buffer_overflow`] is returned. This is one technique which may be used to impose a limit on the maximum size of an HTTP message header for protection from buffer overflow attacks. The following code will print the error message:
06/05/2026
User avatar admin

String added in the repository
Messages may also be read asynchronously. When performing asynchronous stream read operations the stream, buffer, and message variables must remain valid until the operation has completed. Beast asynchronous initiation functions use Asio's completion handler model. This call reads a message asynchronously and reports the error code upon completion. The handler is called with the error, set to any that occurs, and the number of bytes parsed. This number may be used to measure the relative amount of work performed, or it may be ignored as this example shows.
Messages may also be read asynchronously. When performing asynchronous stream read operations the stream, buffer, and message variables must remain valid until the operation has completed. Beast asynchronous initiation functions use Asio's completion handler model. This call reads a message asynchronously and reports the error code upon completion. The handler is called with the error, set to any that occurs, and the number of bytes parsed. This number may be used to measure the relative amount of work performed, or it may be ignored as this example shows.
06/05/2026
User avatar admin

String added in the repository
Other Implementations of __DynamicBuffer__ may avoid parser
Other Implementations of __DynamicBuffer__ may avoid parser
06/05/2026
User avatar admin

String added in the repository
This example uses __flat_buffer__. Beast's __basic_parser__ is optimized for structured HTTP data located in a single contiguous (['flat]) memory buffer. When not using a flat buffer the implementation may perform an additional memory allocations to restructure the input into a single buffer for parsing.
This example uses __flat_buffer__. Beast's __basic_parser__ is optimized for structured HTTP data located in a single contiguous (['flat]) memory buffer. When not using a flat buffer the implementation may perform an additional memory allocations to restructure the input into a single buffer for parsing.
06/05/2026
User avatar admin

String added in the repository
Because a serialized header is not length-prefixed, algorithms which parse messages from a stream may read past the end of a message for efficiency. To hold this surplus data, all stream read operations use a passed-in __DynamicBuffer__ which must be persisted between calls until the end of stream is reached or the stream object is destroyed. Each read operation may consume bytes remaining in the buffer, and leave behind new bytes. In this example we declare the buffer and a message variable, then read a complete HTTP request synchronously:
Because a serialized header is not length-prefixed, algorithms which parse messages from a stream may read past the end of a message for efficiency. To hold this surplus data, all stream read operations use a passed-in __DynamicBuffer__ which must be persisted between calls until the end of stream is reached or the stream object is destroyed. Each read operation may consume bytes remaining in the buffer, and leave behind new bytes. In this example we declare the buffer and a message variable, then read a complete HTTP request synchronously:
06/05/2026
User avatar admin

String added in the repository
Reading
Reading
06/05/2026
User avatar admin

String added in the repository
All synchronous stream operations come in two varieties. One which throws an exception upon error, and another which accepts as the last parameter an argument of type [link beast.ref.boost__beast__error_code `error_code&`]. If an error occurs this argument will be set to contain the error code.
All synchronous stream operations come in two varieties. One which throws an exception upon error, and another which accepts as the last parameter an argument of type [link beast.ref.boost__beast__error_code `error_code&`]. If an error occurs this argument will be set to contain the error code.
06/05/2026

Search