@Override
  public DatagramChannel bind(SocketAddress local) throws IOException {
    synchronized (readLock) {
      synchronized (writeLock) {
        synchronized (stateLock) {
          ensureOpen();
          if (localAddress != null) throw new AlreadyBoundException();
          InetSocketAddress isa;
          if (local == null) {
            // only Inet4Address allowed with IPv4 socket
            if (family == StandardProtocolFamily.INET) {
              isa = new InetSocketAddress(InetAddress.getByName("0.0.0.0"), 0);
            } else {
              isa = new InetSocketAddress(0);
            }
          } else {
            isa = Net.checkAddress(local);

            // only Inet4Address allowed with IPv4 socket
            if (family == StandardProtocolFamily.INET) {
              InetAddress addr = isa.getAddress();
              if (!(addr instanceof Inet4Address)) throw new UnsupportedAddressTypeException();
            }
          }
          SecurityManager sm = System.getSecurityManager();
          if (sm != null) {
            sm.checkListen(isa.getPort());
          }
          Net.bind(family, fd, isa.getAddress(), isa.getPort());
          localAddress = Net.localAddress(fd);
        }
      }
    }
    return this;
  }
Ejemplo n.º 2
0
 public void bind(SocketAddress local) throws IOException {
   synchronized (readLock) {
     synchronized (writeLock) {
       synchronized (stateLock) {
         ensureOpenAndUnconnected();
         if (localAddress != null) throw new AlreadyBoundException();
         InetSocketAddress isa = Net.checkAddress(local);
         Net.bind(fd, isa.getAddress(), isa.getPort());
         localAddress = Net.localAddress(fd);
       }
     }
   }
 }