Bug fixed

[andreucci]

Bug fixed on MQTT.java: mqtt.retain il the last bit of the first byte, not on the second byte

public static MQTTMessage decode(byte[] message) {
    int i = 0;
    MQTTMessage mqtt = new MQTTMessage();
    mqtt.type = (message[i] >> 4) & 0x0F;
    mqtt.DUP = ((message[i] >> 3) & 0x01) == 0 ? false : true;
    mqtt.QoS = (message[i] >> 1) & 0x03;
     //mqtt.retain = (message[i++] & 0x01) == 0 ? false : true;    // credo che l' i++ sia sbagliato
    mqtt.retain = (message[i] & 0x01) == 0 ? false : true;

Then an i++ should be added before :

    switch (mqtt.type) {
    case CONNECT:

There is also something to fix after that to mage the message[0] work.
I still have the problem that I send a byte and I receive, on android side, a char. Any idea?