output: #fixed code
                                  public static void getTraceMask(String host, int port) {
          Socket s = null;
          try {
              byte[] reqBytes = new byte[12];
              ByteBuffer req = ByteBuffer.wrap(reqBytes);
              req.putInt(ByteBuffer.wrap("gtmk".getBytes()).getInt());
  
              s = new Socket();
              s.setSoLinger(false, 10);
              s.setSoTimeout(20000);
              s.connect(new InetSocketAddress(host, port));
  
              InputStream is = s.getInputStream();
              OutputStream os = s.getOutputStream();
  
              os.write(reqBytes);
  
              byte[] resBytes = new byte[8];
  
              int rc = is.read(resBytes);
              ByteBuffer res = ByteBuffer.wrap(resBytes);
              long retv = res.getLong();
              System.out.println("rc=" + rc + " retv=0"
                      + Long.toOctalString(retv));
          } catch (IOException e) {
              LOG.warn("Unexpected exception", e);
          } finally {
              if (s != null) {
                  try {
                      s.close();
                  } catch (IOException e) {
                      LOG.warn("Unexpected exception", e);
                  }
              }
          }
      }
input: #vulnerable code 
                                  public static void getTraceMask(String host, int port) {
          try {
              byte[] reqBytes = new byte[12];
              ByteBuffer req = ByteBuffer.wrap(reqBytes);
              req.putInt(ByteBuffer.wrap("gtmk".getBytes()).getInt());
  
              Socket s = null;
              s = new Socket();
              s.setSoLinger(false, 10);
              s.setSoTimeout(20000);
              s.connect(new InetSocketAddress(host, port));
  
              InputStream is = s.getInputStream();
              OutputStream os = s.getOutputStream();
  
              os.write(reqBytes);
  
              byte[] resBytes = new byte[8];
  
              int rc = is.read(resBytes);
              ByteBuffer res = ByteBuffer.wrap(resBytes);
              long retv = res.getLong();
              System.out.println("rc=" + rc + " retv=0"
                      + Long.toOctalString(retv));
          } catch (IOException ioe) {
              LOG.warn("Unexpected exception", ioe);
          }
      } 
                              #location 20 
                              #vulnerability type RESOURCE_LEAK