Create input stream for reading.
@param offset The number of bytes of where to start reading. If the file is not random accessible, any offset other than zero will throw an exception.
@return An {@link InputStream} used to read the {@link FtpFile}
@throws IOException
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.