stella.net.gregor

Class PacketInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

stella.net.gregor.PacketInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable

public class PacketInputStream
extends DataInputStream

This stream represents an input stream that can handle serialization of GREGOR Messages (Message). It extends the DataInputStream by a single method that reads a (short) Message. During packet reading, the length of the data packet in the four bytes with index 46-49 determines how many bytes are read to complete the data array.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
PacketInputStream(InputStream in) Wraps a packet input stream on top of a data output stream.

Method Summary

Modifier and Type	Method and Description
protected Message	gotPacket(int overall, int offset, short flags, int id, String src, String dest, byte[] data) This method should be populated if multi-packet receiving is needed.
Message	readMessage() Reads a short GREGOR message from the stream.

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PacketInputStream

public PacketInputStream(InputStream in)

Wraps a packet input stream on top of a data output stream. This output stream, in turn, should be wrapp to the socket input stream during data handling.

Method Detail

readMessage

public Message readMessage()
                    throws IOException

Reads a short GREGOR message from the stream. The bytes with index numer 46-49 determine the data length to be read. The first four bytes are the total length of the message, only short message reading is currently supported.

Throws:

IOException

gotPacket

protected Message gotPacket(int overall,
                            int offset,
                            short flags,
                            int id,
                            String src,
                            String dest,
                            byte[] data)
                     throws IOException

This method should be populated if multi-packet receiving is needed.

Throws:

IOException