Socket option

http://download.oracle.com/javase/6/docs/technotes/guides/net/socketOpt.html

 

Java now provides a type-safe way to set options. Each socket class has a get/set method for each option it supports, taking and returning the appropriate type. The options supported, for which socket classes and their meaning in brief:

• TCP_NODELAY
  • Disable Nagle's algorithm.
  • Valid for (client) Sockets.
• SO_LINGER
  • Specify a linger-on-close timeout.
  • Valid for (client) Sockets.
• SO_TIMEOUT
  • Specify a timeout on blocking socket operations. (Don't block forever!
  • Valid for all sockets: Socket, ServerSocket, DatagramSocket.
• SO_BINDADDR
  • Fetch the local address binding of a socket.
  • Valid for Socket, ServerSocket, DatagramSocket.
• SO_REUSEADDR
  • Enable reuse address for a socket.
  • Valid for Socket, ServerSocket, DatagramSocket.
• SO_BROADCAST
  • Enables a socket to send broadcast messages.
  • Valid for DatagramSocket.
• SO_SNDBUF
  • Set a hint the size of the underlying buffers for outgoing network I/O.
  • Valid for all sockets: Socket, ServerSocket, DatagramSocket.
• SO_RCVBUF
  • Get the size of the buffer actually used by the platform when receiving in data on this socket.
  • Valid for all sockets: Socket, ServerSocket, DatagramSocket.
• SO_KEEPALIVE
  • Turn on socket keepalive.
  • Valid for Socket.
• SO_OOBINLINE
  • Enable inline reception of TCP urgent data.
  • Valid for Socket.
• IP_MULTICAST_IF
  • Specify the outgoing interface for multicast packets (on multihomed hosts).
  • Valid for MulticastSockets.
• IP_MULTICAST_LOOP
  • Enables or disables local loopback of multicast datagrams.
  • Valid for MulticastSocket.
• IP_TOS
  • Sets the type-of-service or traffic class field in the IP header for a TCP or UDP socket.
  • Valid for Socket, DatagramSocket