Write some data to the handle.
template< typename ConstBufferSequence> std::size_t write_some( const ConstBufferSequence & buffers, boost::system::error_code & ec);
This function is used to write data to the stream handle. The function call will block until one or more bytes of the data has been written successfully, or until an error occurs.
One or more data buffers to be written to the handle.
Set to indicate what error occurred, if any.
The number of bytes written. Returns 0 if an error occurred.
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.