CloudhopperClient.java

package com.esoftdive.core.smpp.internal;

import java.util.Random;

import com.cloudhopper.commons.charset.CharsetUtil;
import com.cloudhopper.smpp.SmppConstants;
import com.cloudhopper.smpp.SmppSession;
import com.cloudhopper.smpp.pdu.SubmitSm;
import com.cloudhopper.smpp.type.Address;

public class CloudhopperClient {
	
	public void sendLongMessage(String msisdn, String message, String senderAddr) throws Exception {
		byte sourceTon = (byte)0x03;
		if(senderAddr != null && senderAddr.length() > 0) {
			sourceTon = (byte)0x05;
		}
		
		byte[] textBytes = CharsetUtil.encode(message, CharsetUtil.CHARSET_ISO_8859_15);

		int maximumMultipartMessageSegmentSize = 134;
		byte[] byteSingleMessage = textBytes;
		byte[][] byteMessagesArray = splitUnicodeMessage(byteSingleMessage, maximumMultipartMessageSegmentSize);
		// submit all messages
		for (int i = 0; i < byteMessagesArray.length; i++) {
			SubmitSm submit0 = new SubmitSm();
			submit0.setEsmClass(SmppConstants.ESM_CLASS_UDHI_MASK);
			submit0.setRegisteredDelivery(SmppConstants.REGISTERED_DELIVERY_SMSC_RECEIPT_REQUESTED);
			submit0.setSourceAddress(new Address(sourceTon, (byte)0x00, senderAddr));
			submit0.setDestAddress(new Address((byte)0x03, (byte)0x00, msisdn));
			submit0.setShortMessage(byteMessagesArray[i]);
			getSession().submit(submit0, 10000);
		}
	}

	private static byte[][] splitUnicodeMessage(byte[] aMessage, Integer maximumMultipartMessageSegmentSize) {
		final byte UDHIE_HEADER_LENGTH = 0x05;
		final byte UDHIE_IDENTIFIER_SAR = 0x00;
		final byte UDHIE_SAR_LENGTH = 0x03;

		// determine how many messages have to be sent
		int numberOfSegments = aMessage.length / maximumMultipartMessageSegmentSize;
		int messageLength = aMessage.length;
		if (numberOfSegments > 255) {
			numberOfSegments = 255;
			messageLength = numberOfSegments * maximumMultipartMessageSegmentSize;
		}
		if ((messageLength % maximumMultipartMessageSegmentSize) > 0) {
			numberOfSegments++;
		}

		// prepare array for all of the msg segments
		byte[][] segments = new byte[numberOfSegments][];

		int lengthOfData;

		// generate new reference number
		byte[] referenceNumber = new byte[1];
		new Random().nextBytes(referenceNumber);

		// split the message adding required headers
		for (int i = 0; i < numberOfSegments; i++) {
			if (numberOfSegments - i == 1) {
				lengthOfData = messageLength - i * maximumMultipartMessageSegmentSize;
			} else {
				lengthOfData = maximumMultipartMessageSegmentSize;
			}
			// new array to store the header
			segments[i] = new byte[6 + lengthOfData];

			// UDH header
			// doesn't include itself, its header length
			segments[i][0] = UDHIE_HEADER_LENGTH;
			// SAR identifier
			segments[i][1] = UDHIE_IDENTIFIER_SAR;
			// SAR length
			segments[i][2] = UDHIE_SAR_LENGTH;
			// reference number (same for all messages)
			segments[i][3] = referenceNumber[0];
			// total number of segments
			segments[i][4] = (byte) numberOfSegments;
			// segment number
			segments[i][5] = (byte) (i + 1);
			// copy the data into the array
			System.arraycopy(aMessage, (i * maximumMultipartMessageSegmentSize), segments[i], 6, lengthOfData);
		}
		return segments;
	}
	
	private SmppSession getSession() {
		//take the session
		return null;
	}
}