JpcapWriter.java

package jpcap;

import jpcap.packet.Packet;

/**
 * This class is used to save the captured packets into a file.
 */
public class JpcapWriter
{
	private native String nativeOpenDumpFile(String filename, int ID);

	private JpcapWriter(JpcapCaptor jpcap, String filename) throws java.io.IOException
	{
		String ret = nativeOpenDumpFile(filename, jpcap.ID);

		if(ret != null)
		{ //error
			throw new java.io.IOException(ret);
		}
	}

	/**
	 * Opens a file to save the captured packets.
	 *
	 * @param jpcap	instance of JpcapCaptor that was used to capture (load) packets
	 * @param filename filename
	 * @throws IOException If the file cannot be opened
	 */
	public static JpcapWriter openDumpFile(JpcapCaptor jpcap, String filename) throws java.io.IOException
	{
		return new JpcapWriter(jpcap, filename);
	}

	/**
	 * Closes the opened file.
	 */
	public native void close();

	/**
	 * Saves a packet into the file.
	 *
	 * @param packet Packet to be saved
	 */
	public native void writePacket(Packet packet);
}