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buffered_read_stream::async_write_some

Start an asynchronous write.

Synopsis
template<
    class ConstBufferSequence,
    class WriteHandler>
void-or-deduced
async_write_some(
    ConstBufferSequence const& buffers,
    WriteHandler&& handler);
Description

This function is used to asynchronously write data from the stream. The function call always returns immediately.

Parameters

Name

Description

buffers

One or more data buffers to be written to the stream. Although the buffers object may be copied as necessary, ownership of the underlying memory blocks is retained by the caller, which must guarantee that they remain valid until the handler is called.

handler

The handler to be called when the operation completes. Copies will be made of the handler as required. The equivalent function signature of the handler must be:

 void handler(
    error_code const& error,      // result of operation
    std::size_t bytes_transferred // number of bytes transferred
);

Regardless of whether the asynchronous operation completes immediately or not, the handler will not be invoked from within this function. Invocation of the handler will be performed in a manner equivalent to using boost::asio::io_service::post.


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