java.net.Socket

    1. public synchronized int getReceiveBufferSize() throws SocketException{
    2.     if (isClosed())
    3.         throw new SocketException("Socket is closed");
    4.     int result = 0;
    5.     Object o = getImpl().getOption(SocketOptions.SO_RCVBUF);
    6.     if (o instanceof Integer) {
    7.         result = ((Integer)o).intValue();
    8.     }
    9.     return result;
    10. }
    12. public synchronized void setReceiveBufferSize(int size)
    13.     throws SocketException{
    14.     if (size <= 0) {
    15.         throw new IllegalArgumentException("invalid receive size");
    16.     }
    17.     if (isClosed())
    18.         throw new SocketException("Socket is closed");
    19.     getImpl().setOption(SocketOptions.SO_RCVBUF, new Integer(size));
    20. }
    22. public synchronized int getSendBufferSize() throws SocketException {
    23.     if (isClosed())
    24.         throw new SocketException("Socket is closed");
    25.     int result = 0;
    26.     Object o = getImpl().getOption(SocketOptions.SO_SNDBUF);
    27.     if (o instanceof Integer) {
    28.         result = ((Integer)o).intValue();
    29.     }
    30.     return result;
    31. }
    33. public synchronized void setSendBufferSize(int size)
    34.     throws SocketException{
    35.     if (!(size > 0)) {
    36.         throw new IllegalArgumentException("negative send size");
    37.     }
    38.     if (isClosed())
    39.         throw new SocketException("Socket is closed");
    40.     getImpl().setOption(SocketOptions.SO_SNDBUF, new Integer(size));
    41. }
    43. //java.net.SocketOptions
    44. @Native public final static int SO_RCVBUF = 0x1002;
    45. @Native public final static int SO_SNDBUF = 0x1001;

    Socket ReceiveBufferSize SendBufferSize - 图1