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Holds a buffer that cannot be modified.
class const_buffer
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Description |
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Construct an empty buffer. Construct a buffer to represent a given memory range. Construct a non-modifiable buffer from a modifiable one. |
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Description |
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Create a new non-modifiable buffer that is offset from the start of another. |
The const_buffer
class provides a safe representation of a buffer that cannot be modified.
It does not own the underlying data, and so is cheap to copy or assign.
The contents of a buffer may be accessed using the buffer_size and buffer_cast functions:
boost::asio::const_buffer b1 = ...; std::size_t s1 = boost::asio::buffer_size(b1); const unsigned char* p1 = boost::asio::buffer_cast<const unsigned char*>(b1);
The boost::asio::buffer_cast function permits violations
of type safety, so uses of it in application code should be carefully considered.
Header: boost/asio/buffer.hpp
Convenience header: boost/asio.hpp