finally {
                Log.i("bai", " finally socket finally  isConnected : "+ socket.isConnected());
                Log.i("bai", "socket info : "+ socket.toString() );
                Log.i("bai", "socket isConnected : "+ socket.isConnected());
                  if (null != socket) {
                      try {
//                          if(dis != null) {
//                              dis.close();
//                          }
                          Log.i("bai", "socket isConnected null != socket: "+ socket.isConnected());
                          Log.i("bai", "socket.isClosed(): "+ socket.isClosed());
                          socket.setSoTimeout(0);
                      } catch(SocketException se) {
                          Log.i("bai",se.getMessage());
                          throw new PushException(se, ErrorType.Err_Read);
                      } catch(IOException ie) {
                          throw new PushException(ie, ErrorType.Err_Read);
                      }
                   }
            }

这个finally是在read socket结束时执行，不过让人奇怪的是在socket不为空，还连接着的情况下，我设置socket永不超时就发现了setsockopt failed: EBADF (Bad file number)问题，导致socket异常关闭。网上也没找到详细资料，请各位道友帮忙看下，very thank you！！！
08-22 08:34:11.452: I/bai(6466): [SocketRead_08:29:07-227] finally socket finally  isConnected : true(pushagent/SSLPushChannel.java:344)
08-22 08:34:11.452: I/bai(6466): [SocketRead_08:29:07-227]socket info : Socket[address=/122.11.38.26,port=5223,localPort=60280](pushagent/SSLPushChannel.java:345)
08-22 08:34:11.452: I/bai(6466): [SocketRead_08:29:07-227]socket isConnected : true(pushagent/SSLPushChannel.java:346)
08-22 08:34:11.452: I/bai(6466): [SocketRead_08:29:07-227]socket isConnected null != socket: true(pushagent/SSLPushChannel.java:352)
08-22 08:34:11.452: I/bai(6466): [SocketRead_08:29:07-227]socket.isClosed(): false(pushagent/SSLPushChannel.java:353)
08-22 08:34:11.462: I/bai(6466): [SocketRead_08:29:07-227]setsockopt failed: EBADF (Bad file number)(pushagent/SSLPushChannel.java:356)
08-22 08:34:11.462: I/bai(6466): [ 08-22 08:34:11.471  6466:0x19ad
直接socket.close不行吗？为何还要加socket.setSoTimeout(0);呢？

如果要终止socket输入或者输出，可以加上：
 
if(null != socket && socket.isConnected)
{
socket.shutdownInput();
socket.shutdownOutput();
}
原因是由于java 每次GC时，垃圾回收器会将session重用中的ParcelFileDescriptor 参数被回收，导致push连接的SSLsocket成为假连接，此时socket.isConnected()=true。但是实际上socket连接已经成为不可用的或者说是坏掉的，合理保存下次参数再在下次使用就可以了。