B C D F G H I J L M N R S T U

B

BAToInt(byte[], int) - Static method in class util.Util

Convert byte[offset]...byte[offset+3] to integer.

BAToInt(byte[]) - Static method in class util.Util

Convert byte[0]...buf[3] to integer.

BAToShort(byte[], int) - Static method in class util.Util

Convert buf[offset] buf[offset+1] to int in range 0..65535

BAToShort(byte[]) - Static method in class util.Util

Convert buf[0] buf[1] to int in range 0..65535

buf - Variable in class mcast.MCastPacket

BUFFER_SIZE - Static variable in class mcast.MCastSocket

Size of inComingPktBuf.

BUFFER_SIZE - Variable in class mcast.TOMCastSocket

A not-very-respected limit on the number of packets to be buffered.

C

chatapp - package chatapp

ChatClient - Class in chatapp

The chat client.

ChatClient(String, String, int, int, int) - Constructor for class chatapp.ChatClient

A lot of parameters are required.

ChatClient.ReceiveHelper - Class in chatapp

Like most everything else, the chat client is multithreaded.

ChatClient.ReceiveHelper() - Constructor for class chatapp.ChatClient.ReceiveHelper

CLIENT_CLIENT_GOODBYE - Static variable in class mcast.MCastPacket

Packet type Sent to all clients in the mcast group when one is done sending and wants to leave the group.

CLIENT_MCAST - Static variable in class mcast.MCastPacket

Packet type A normal client multicast msg, presumably carrying some data payload.

CLIENT_SERVER_HELLO - Static variable in class mcast.MCastPacket

Packet type part of the join protocol; the client tells lobby it's here, and waits to hear back before allowing the user thread to continue.

clock - Variable in class mcast.TOMCastSocket

Our Lamport clock.

close() - Method in class util.Logger

CLOSED - Static variable in class mcast.MCastSocket

Socket state All clients have left the group.

CONNECTED - Static variable in class mcast.MCastSocket

Socket state Socket is part of Mcast group (has heard a SERVER_CLIENT_HELLO and now knows who all is in the mcast group).

D

DRAINED - Static variable in class mcast.MCastSocket

Socket state There are no more packets in the received queue, and none on the network (i.e., there will never again be one available for receiving).

drained - Variable in class mcast.TOMCastSocket

Set to true once there are no more packets in the receive queue and there will never be any again.

F

file - Variable in class util.Logger

G

getAddress() - Method in class mcast.MCastPacket

Returns the address of the packet (useful when receiving a packet).

getBuf() - Method in class mcast.MCastPacket

Gets a reference to the lowest level (datagram packet) buffer.

getClientId(MCastPacket) - Method in class mcast.MCastSocket

Returns a "client id" - an integer in the range 0..getMCastGroupSize()-1.

getClock() - Method in class mcast.TOMCastPacket

getDGPacket() - Method in class mcast.MCastPacket

Provides access to the contained DG packet, which is required to set or get packet addresses (or to directly manipulate packet lengths).

getMCastGroupSize() - Method in class mcast.MCastSocket

Returns the number of clients in the mcast group.

getPayload() - Method in class mcast.MCastPacket

Returns the payload - everything past the MCastPacket header.

getPayload() - Method in class mcast.TOMCastPacket

getPayloadLength() - Method in class mcast.MCastPacket

Returns the number of bytes in the packet past the MCastPacket header.

getPayloadLength() - Method in class mcast.TOMCastPacket

getType() - Method in class mcast.MCastPacket

Extracts the packet type from the header and returns it.

groupMembers - Variable in class mcast.MCastSocket

Addresses of mcast group members.

H

HEADER_SIZE - Static variable in class mcast.MCastPacket

HEADER_SIZE - Static variable in class mcast.TOMCastPacket

I

inComingPktBuf - Variable in class mcast.MCastSocket

The queue of packets available for the client to receive().

inComingPktBuf - Variable in class mcast.TOMCastSocket

The ordered queue of packets to be given to the caller of receive().

incrementClock() - Method in class mcast.TOMCastSocket

This is one of two routines that updates the clock in a thread safe way.

InetAddrToHost(InetSocketAddress) - Static method in class util.Util

init() - Method in class mcast.MCastSocket

Private function to initialize (called by constructors).

IntToBA(int, byte[], int) - Static method in class util.Util

Write integer into buf[offset]...buf[offset+3]

IntToBA(int, byte[]) - Static method in class util.Util

Write integer into buf[0]...buf[3]

J

join(String, int) - Method in class mcast.MCastSocket

Blocks the calling thread until the mcast group is joined.

L

leave() - Method in class mcast.MCastSocket

leave() is called by client when it's done sending.

Lobby - Class in mcast

Lobby: a server to register yourself as a member of the mcast group, and to find out who else is in the group.

Lobby(int, int) - Constructor for class mcast.Lobby

lobbyAddress - Variable in class mcast.MCastSocket

Location of the lobby (provider by creator of this object).

log(String) - Method in class util.Logger

logger - Variable in class chatapp.ChatClient

An object encapsulating creation of a log file.

Logger - Class in util

Utility class to write a log file.

Logger(String) - Constructor for class util.Logger

M

main(String[]) - Static method in class chatapp.ChatClient

main(String[]) - Static method in class mcast.Lobby

Lobby is invoked as java -classpath classes mcast.Lobby port n where port is the lobby port to use and n is the number of clients that will join the group.

main(String[]) - Static method in class util.Util

Unit test.

MAX_PACKET_SIZE - Static variable in class mcast.MCastPacket

MAX_PAYLOAD_SIZE - Static variable in class mcast.MCastPacket

mcast - package mcast

MCastPacket - Class in mcast

An MCastPacket is a:

MCastPacket() - Constructor for class mcast.MCastPacket

By default, create a packet with type suitable for client sending.

MCastPacket(int) - Constructor for class mcast.MCastPacket

Constructor for outgoing packets.

MCastPacket(DatagramPacket) - Constructor for class mcast.MCastPacket

Constructor for incoming packets.

MCastSocket - Class in mcast

MCastSocket: implements basic multicast transport.

MCastSocket() - Constructor for class mcast.MCastSocket

Creates a new MCastSocket, obtaining an ephemeral (random) port number.

MCastSocket(int) - Constructor for class mcast.MCastSocket

Creates a new MCastSocket with a specified port number.

MCastSocket.ReceiveHelper - Class in mcast

Helper class to implement receiving thread.

MCastSocket.ReceiveHelper() - Constructor for class mcast.MCastSocket.ReceiveHelper

myDGPacket - Variable in class mcast.MCastPacket

mySocket - Variable in class mcast.MCastSocket

The socket actually used to send and receive to/from the network.

N

numDeparted - Variable in class mcast.MCastSocket

Number of clients who have departed (i.e., promised they will send no more packets to the mcast group).

R

receive() - Method in class mcast.MCastSocket

receive() - Method in class mcast.TOMCastSocket

Receive blocks if nothing is available right now.

receivePkt - Variable in class chatapp.ChatClient

The packet used by the receive thread (to hold incoming data).

receiver - Variable in class mcast.MCastSocket

The receive thread (takes packets off network and puts them in a packet buffer).

receiver - Variable in class mcast.TOMCastSocket

A TOMCastSocket uses a separate thread on the receive side.

run() - Method in class chatapp.ChatClient.ReceiveHelper

run() - Method in class mcast.MCastSocket.ReceiveHelper

run() - Method in class mcast.TOMCastSocket

This is the receive thread loop, invoked when the thread is started.

S

send(MCastPacket) - Method in class mcast.MCastSocket

This is multicast send.

send(TOMCastPacket) - Method in class mcast.TOMCastSocket

This is multicast send.

sendPkt - Variable in class chatapp.ChatClient

The packet used by the send thread (to hold outgoing data).

SERVER_CLIENT_HELLO - Static variable in class mcast.MCastPacket

Packet type Once server has received HELLO msgs from all the clients it is expecting, it replies to each with one of these.

setAddress(InetSocketAddress) - Method in class mcast.MCastPacket

Sets the address of this packet (so useful when you're going to send the packet).

setClock(int) - Method in class mcast.TOMCastPacket

Sets the TOMCastPacket header clock field.

setPayload(byte[]) - Method in class mcast.MCastPacket

Sets the payload, as seen from the perspective of an MCastPacket.

setPayload(byte[]) - Method in class mcast.TOMCastPacket

Sets the payload: the packet bytes past the TOMCastPacket header.

setPayloadLength(int) - Method in class mcast.MCastPacket

Sets the payload length (in the underlying DatagramPacket).

setPayloadLength(int) - Method in class mcast.TOMCastPacket

Direct manipulation of the payload length.

setType(int) - Method in class mcast.MCastPacket

Set the MCastPacket type.

ShortToBA(int, byte[], int) - Static method in class util.Util

Write low-order 16-bits of val into buf[offset] buf[offset+1]

ShortToBA(int, byte[]) - Static method in class util.Util

Write low order 16-bits of val into buf[0] buf[1]

sock - Variable in class chatapp.ChatClient

The communication socket.

SOCKET_CLOSED - Static variable in class mcast.MCastPacket

Packet type A pseudo-type used by socket implementations to indicate that this is the last packet that can be received, ever.

STARTING - Static variable in class mcast.MCastSocket

Socket state Initial state: not yet connected.

startSem - Variable in class mcast.MCastSocket

Use to blocking user thread, in a call to join(), until receive thread notices that the mcast group has been joined.

state - Variable in class mcast.MCastSocket

Current state of the socket.

T

TOMCastPacket - Class in mcast

An TOMMCastPacket is a:

TOMCastPacket() - Constructor for class mcast.TOMCastPacket

Constructor for outgoing packets: creates packet with TOMCast header, but no payload.

TOMCastPacket(MCastPacket) - Constructor for class mcast.TOMCastPacket

Constructor for incoming packets: takes an MCastPacket received off the network and views it as a TOMCastPacket.

TOMCastSocket - Class in mcast

TOMCastSocket implements total ordering, on top of an MCastSocket, which provides (unordered) multicast.

TOMCastSocket() - Constructor for class mcast.TOMCastSocket

Create a TOMCastSock socket at an ephemeral port.

toString() - Method in class mcast.MCastPacket

The obligatory toString.

toString() - Method in class mcast.TOMCastPacket

The obligatory toString.

U

unicastSendTo(MCastPacket, InetSocketAddress) - Method in class mcast.MCastSocket

Private unicast send helper function.

updateClockWithMax(int) - Method in class mcast.TOMCastSocket

This is one of two routines that updates the clock in a thread safe way.

updateMCastClientList(String) - Method in class mcast.MCastSocket

Accept mcast client group message from lobby, parse it, can fill in group member data structure.

usage() - Static method in class chatapp.ChatClient

usage() - Static method in class mcast.Lobby

A gratuitous usage() message.

util - package util

Util - Class in util

Various static utility methods.

Util() - Constructor for class util.Util

B C D F G H I J L M N R S T U