IPTOS_LOWDELAY (0x10) 最下位ビットは、MBZ (0でなければならない)ビットに対応するので、常に無視されます。 優先フィールドにビットを設定すると、操作が許可されないことを示すSocketExceptionになることがあります。 RFC 1122のセクション4.2.4.2に示されているように、準拠したTCP実装は...
getImpl().setOption(SocketOptions.IP_MULTICAST_LOOP, Boolean.valueOf(disable)); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 9、public final static int IP_TOS = 0x3; 这个参数是用来控制IP头中的TOS字段的,是用来控制和优化IP包的路径的,在Socket源代码里有...
setTcpNoDelay(true); // socket.setTrafficClass(IPTOS_LOWDELAY); socket.connect(remoteAddress, timeout); // Connect using blocking mode for simplicity. socketChannel.configureBlocking(false); this.socketChannel = socketChannel; selectionKey = socketChannel.register(selector, SelectionKey.OP_READ); ...
该选项使我们可以给TCP或UDP套接口在IP头部中设置服务类型字段。如果我们给此选项调用getsockopt,则放到外出IP数据报头部的TOS字段中的当前值将返回(缺省为0)。还没有办法从接收到的IP数据报中取此值。 可以将TOS设置为如下的值: IPTOS_LOWDELAY:最小化延迟 IPTOS_THROUGHPUT:最大化吞吐量 IPTOS_RELIABILITY:最...
getImpl().setOption(SocketOptions.IP_MULTICAST_LOOP, Boolean.valueOf(disable)); } 9、public final static int IP_TOS = 0x3; 这个参数是用来控制IP头中的TOS字段的,是用来控制和优化IP包的路径的,在Socket源代码里有一个设置的方法: /*** Sets traffic class or type-of-service octet in the IP ...
* <LI><CODE>IPTOS_LOWDELAY (0x10)</CODE></LI> * </UL> * The last low order bit is always ignored as this * corresponds to the MBZ (must be zero) bit. * * Setting bits in the precedence field may result in a * SocketException indicating that the operation is not ...
#define IPTOS_LOWDELAY 0x10#define IPTOS_THROUGHPUT 0x08#define IPTOS_RELIABILITY 0x04#define IPTOS_LOWCOST 0x02#define IPTOS_MINCOST IPTOS_LOWCOST /** The Network Control precedence designation is intended to be used* within a network only. The actual use and cont...
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* If UDP socket is used, TCP/IP related socket options will not apply. * * @param host the IP address. * @param port the port number. * @param stream if {@code true}, create a stream socket; * otherwise, create a datagram socket. ...
* If UDP socket is used, TCP/IP related socket options will not apply. * * @param host the IP address. * @param port the port number. * @param stream if true, create a stream socket; * otherwise, create a datagram socket. * @exception IOException...