protected BlockingConnection connect(boolean ultrapeer) throws Exception {
ServerSocket ss = new ServerSocket();
ss.setReuseAddress(true);
ss.bind(new InetSocketAddress(0));
connectionServices.connectToHostAsynchronously(
"127.0.0.1", ss.getLocalPort(), ConnectType.PLAIN);
Socket socket = ss.accept();
ss.close();
socket.setSoTimeout(3000);
InputStream in = socket.getInputStream();
String word = IOUtils.readWord(in, 9);
if (!word.equals("GNUTELLA")) throw new IOException("Bad word: " + word);
HandshakeResponder responder;
if (ultrapeer) {
responder = new UltrapeerResponder();
} else {
responder = new OldResponder();
}
BlockingConnection con = blockingConnectionFactory.createConnection(socket);
con.initialize(null, responder, 1000);
replyToPing(con, ultrapeer);
return con;
}
private void readNumConnectBacks(int num, BlockingConnection conn, int timeout) throws Exception {
Message m;
for (int i = 0; i < num; i++) {
do {
m = conn.receive(timeout);
} while (!(m instanceof TCPConnectBackVendorMessage));
}
try {
do {
m = conn.receive(timeout);
} while (!(m instanceof TCPConnectBackVendorMessage));
fail("got extra message " + m.getClass() + " on " + conn);
} catch (IOException expected) {
}
}
/** Note that this function will _EAT_ messages until it finds a ping to respond to. */
private void replyToPing(BlockingConnection c, boolean ultrapeer) throws Exception {
// respond to a ping iff one is given.
Message m = null;
byte[] guid;
try {
while (!(m instanceof PingRequest)) {
m = c.receive(500);
}
guid = ((PingRequest) m).getGUID();
} catch (InterruptedIOException iioe) {
// nothing's coming, send a fake pong anyway.
guid = new GUID().bytes();
}
Socket socket = c.getSocket();
PingReply reply =
pingReplyFactory.createExternal(
guid, (byte) 7, socket.getLocalPort(), ultrapeer ? ultrapeerIP : oldIP, ultrapeer);
reply.hop();
c.send(reply);
c.flush();
}