/** Test reconstituting a message */
public void testReconstituteMessage() {
String encoding1 =
" 172.17.152.12253200 172.17.152.17 2017D 1TCP, the Queen of Protocols! 4587";
char[] encodingChars = encoding1.toCharArray();
byte[] encodingBytes = new byte[encodingChars.length];
for (int i = 0; i < encodingChars.length; i++)
// convert i-th char to byte
encodingBytes[i] = (byte) encodingChars[i];
assertEquals("encoding1 length", ReliableTransportMessage.BUFFER_LEN, encoding1.length());
ReliableTransportMessage msg1 = ReliableTransportMessage.reconstitute(encodingBytes);
assertNotNull("reconstituted message 1 is NULL", msg1);
assertEquals("Source IP", "/172.17.152.122", msg1.getSourceIP().toString());
assertEquals("Dest IP", "/172.17.152.17", msg1.getDestIP().toString());
assertEquals("Source port", 53200, msg1.getSrcPort());
assertEquals("Dest port", 2017, msg1.getDestPort());
assertEquals("Op code", ReliableTransportMessage.DATA, msg1.getOpCode());
assertEquals("seq no", 1, msg1.getSequenceNo());
assertEquals(
"Payload length", ReliableTransportMessage.PAYLOAD_LEN, msg1.getPayload().length());
assertEquals("Payload", "TCP, the Queen of Protocols! ", msg1.getPayload());
assertEquals("Computed checksum", 4587, msg1.getComputedChecksum());
assertEquals("Stored checksum", 4587, msg1.getStoredChecksum());
// encoding with garbled contents
String encoding2 =
" 172.17.152.12253200 172.17.152.17 2017D 1Drink Coca-cola! 4568";
assertEquals("encoding2 length", ReliableTransportMessage.BUFFER_LEN, encoding2.length());
encodingChars = encoding2.toCharArray();
byte[] encodingBytes2 = new byte[encodingChars.length];
for (int i = 0; i < encodingChars.length; i++)
// convert i-th char to byte
encodingBytes2[i] = (byte) encodingChars[i];
ReliableTransportMessage msg2 = ReliableTransportMessage.reconstitute(encodingBytes2);
assertNull("reconstituted message 2 is not NULL", msg2);
}
/**
* Test fields of the constructed object
*
* @throws UnknownHostException
*/
public void testConstructor() throws UnknownHostException {
InetAddress srcIP = InetAddress.getByName("172.17.152.122");
InetAddress destIP = InetAddress.getByName("172.17.152.124");
ReliableTransportMessage msg =
new ReliableTransportMessage(
srcIP, destIP, 2200, 2015, ReliableTransportMessage.DATA, 1, "Hi mom!");
assertEquals("source port: ", 2200, msg.getSrcPort());
assertEquals("dest port: ", 2015, msg.getDestPort());
assertEquals("op code", 'D', msg.getOpCode());
assertEquals("sequence no", 1, msg.getSequenceNo());
assertEquals("payload", "Hi mom!", msg.getPayload());
}