basic_stream_file::write_some (1 of 2 overloads)

Write some data to the file.

template<
    typename ConstBufferSequence>
std::size_t write_some(
    const ConstBufferSequence & buffers);

This function is used to write data to the stream file. The function call will block until one or more bytes of the data has been written successfully, or until an error occurs.

Parameters

buffers: One or more data buffers to be written to the file.

Return Value

The number of bytes written.

Exceptions

asio::system_error: Thrown on failure. An error code of asio::error::eof indicates that the end of the file was reached.

Remarks

The write_some operation may not transmit all of the data to the peer. Consider using the write function if you need to ensure that all data is written before the blocking operation completes.

Example

To write a single data buffer use the buffer function as follows:

file.write_some(asio::buffer(data, size));

See the buffer documentation for information on writing multiple buffers in one go, and how to use it with arrays, boost::array or std::vector.