/*
* (non-Javadoc)
*
* @see
* org.apache.mina.core.service.IoHandlerAdapter#exceptionCaught(org.apache
* .mina.core.session.IoSession, java.lang.Throwable)
*/
@Override
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
log.error(cause.getMessage(), cause);
}
/**
* Service.
*
* @param o the o
* @param session the session
*/
void service(IoBuffer o, IoSession session) {
try {
// System.out.println(o.remaining() + "/" + o.capacity());
session.setAttribute("last", System.currentTimeMillis());
SimpleIoBuffer in = (SimpleIoBuffer) session.getAttribute("buf");
if (in == null) {
in = SimpleIoBuffer.create(4096);
session.setAttribute("buf", in);
}
byte[] data = new byte[o.remaining()];
o.get(data);
in.append(data);
// log.debug("recv: " + data.length + ", " +
// session.getRemoteAddress());
while (in.length() > 5) {
in.mark();
/**
* Byte 1: head of the package<br>
* bit 7-6: "01", indicator of MDC<br>
* bit 5: encrypt indicator, "0": no; "1": encrypted<br>
* bit 4: zip indicator, "0": no, "1": ziped<br>
* bit 0-3: reserved<br>
* Byte 2-5: length of data<br>
* Byte[…]: data array<br>
*/
byte head = in.read();
/** test the head indicator, if not correct close it */
if ((head & 0xC0) != 0x40) {
log.info("flag is not correct! flag:" + head + ",from: " + session.getRemoteAddress());
session.write("error.head");
session.close(true);
return;
}
int len = in.getInt();
if (len <= 0 || len > MAX_SIZE) {
log.error(
"mdcserver.Wrong lendth: "
+ len
+ "/"
+ MAX_SIZE
+ " - "
+ session.getRemoteAddress());
session.write("error.packet.size");
session.close(true);
break;
}
// log.info("packet.len:" + len + ", len in buffer:" +
// in.length());
if (in.length() < len) {
in.reset();
break;
} else {
// do it
byte[] b = new byte[len];
in.read(b);
// log.info("stub.package.size: " + len + ", head:" + head +
// ", cmd:" + Bean.toString(b));
// log.info("stub.package.size: " + len + ", head:" + head);
/** test the zip flag */
if ((head & 0x10) != 0) {
b = Zip.unzip(b);
}
final TConn d = (TConn) session.getAttribute("conn");
if (d != null) {
/** test the encrypted flag */
if ((head & 0x20) != 0) {
b = DES.decode(b, d.deskey);
}
final byte[] bb = b;
/** test if the packet is for mdc or app */
new WorkerTask() {
@Override
public void onExecute() {
d.process(bb);
}
}.schedule(0);
session.setAttribute("last", System.currentTimeMillis());
} else {
session.write("error.getconnection");
log.error("error to get connection: " + session.getRemoteAddress());
session.close(true);
}
}
}
} catch (Throwable e) {
log.error("closing stub: " + session.getRemoteAddress(), e);
session.write("exception." + e.getMessage());
session.close(true);
}
}