siena.comm

Interface PacketSender

All Known Implementing Classes:

KAZipPacketSender

public interface PacketSender

packet sender. Abstraction of a primitive communication mechanism for sending packets. Packets are chunks of bytes. A packet sender sends packets to a specific destination. Every implementation of Siena uses one or more packet senders to communicate with remote clients and servers.

Packet senders are constructed by PacketSenderFactory using the URI of the corresponding receiver as a parameter.

This version of Siena includes only a simple implementation on top of TCP/IP. Future versions will include support for encapsulation into other protocols, such as SMTP and HTTP.

See Also:

PacketReceiver

Method Summary

Methods

Modifier and Type	Method and Description
int	getCost() returns cost of packet transmissions
void	send(byte[] packet) sends a packet.
void	send(byte[] packet, int len) sends a packet.
void	send(byte[] packet, int offset, int len) sends a packet.
void	shutdown() closes this sender.

Method Detail

send

void send(byte[] packet)
          throws PacketSenderException

sends a packet.

Throws:

PacketSenderException

send

void send(byte[] packet,
        int len)
          throws PacketSenderException

sends a packet.

Throws:

PacketSenderException

send

void send(byte[] packet,
        int offset,
        int len)
          throws PacketSenderException

sends a packet.

Throws:

PacketSenderException

shutdown

void shutdown()
              throws PacketSenderException

closes this sender.

Throws:

PacketSenderException

getCost

int getCost()

returns cost of packet transmissions