/*******************************************************************************
 *  Copyright 2017-2018 Centre for Development of Advanced Computing(C-DAC), Pune
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *   http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package cdac.medinfo.sdk.dcm30_04.services.dicomnetcommons;

import java.io.IOException;
import java.net.InetSocketAddress;


/**
 * The implementor of this interface will be used to write or read from a Socket Stream.
 */
public interface INetworkAgent 
{
	/**
	 * Reads the iSize number of bytes from the Socket Stream.
	 * @param iSize the number of bytes to be read
	 * @return byte[] - the byte buffer
	 * @throws IOException Signals that an IO Exception occurs.
	 */
	byte[] read(int iSize) throws IOException;

	/**
	 * Write the ByteBuffer to the underlying Socket Stream.
	 * @param buffer  the buffer to be written.
	 * @throws IOException Signals that an IO Exception occurs.
	 */
	void write(byte[] buffer) throws IOException;

	/**
	 * Closes the Socket and relieves the other resources.
	 */
	void close();
	
	/**
	 * Implementation of this method returns Socket Address used for communication. 
	 */
	InetSocketAddress getSocketAddress();
}
