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Property Summary
Number
index
Returns the current position in the byte array of the packet.



Method Summary
byte[]
getByteArray()
Returns the content of the package into a byte array.
String
getHost()
Returns the name of the host that sent the packet.
Number
getLength()
Returns the length of the packet in bytes.
Number
getPort()
Returns the port where the packet originated from.
Number
readByte()
Reads an 8 bits byte value from the packet, starting from the current index.
Number
readInt()
Reads a 32 bits int value from the packet, starting from the current index.
Number
readShort()
Reads a 32 bits short value from the packet, starting from the current index.
String
readUTF()
Reads a UTF-8 string from the packet, starting from the current index.
String
readUTF(length)
Reads a UTF-8 string from the packet, starting from the current index.
void
writeByte(number)
Writes one byte into the packet, at the current index.
void
writeBytes(bytes)
Writes an array of bytes into the packet, at the current index.
void
writeInt(number)
Writes a 32 bits int into the packet, at the current index.
void
writeShort(number)
Writes a 16 bits short value into the packet, at the current index.
Number
writeUTF(string)
Writes an UTF-8 encoded string into the packet, at the current index.



Property Details

index

Returns the current position in the byte array of the packet. The next read/write operation will occur at this position.
This is a 0 based index.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('an int is: ' + packet.readInt());
		application.output('moved to index: ' + packet.index);
		application.output('a short is: ' + packet.readShort());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 



Method Details

getByteArray

byte[]
getByteArray
()
Returns the content of the package into a byte array.

Returns

byte[]

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		var bytes = packet.getByteArray();
		application.output('received a packet of length: ' + bytes.length);
		for (var i=0; i<bytes.length; i++)
			application.output(bytes[i]);
		}
	else {
		application.output('end of communication.');
		break;
	}
}
 

getHost

String
getHost
()
Returns the name of the host that sent the packet.

Returns

String

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('message is: ' + packet.readUTF());
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

getLength

Number
getLength
()
Returns the length of the packet in bytes.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('message is: ' + packet.readUTF());
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

getPort

Number
getPort
()
Returns the port where the packet originated from.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('message is: ' + packet.readUTF());
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

readByte

Number
readByte
()
Reads an 8 bits byte value from the packet, starting from the current index. Advances the index with one position.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('an int is: ' + packet.readInt());
		application.output('moved to index: ' + packet.index);
		application.output('a short is: ' + packet.readShort());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

readInt

Number
readInt
()
Reads a 32 bits int value from the packet, starting from the current index. Advances the index with 4 positions.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('an int is: ' + packet.readInt());
		application.output('moved to index: ' + packet.index);
		application.output('a short is: ' + packet.readShort());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

readShort

Number
readShort
()
Reads a 32 bits short value from the packet, starting from the current index. Advances the index with 2 positions.

Returns

Number

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('an int is: ' + packet.readInt());
		application.output('moved to index: ' + packet.index);
		application.output('a short is: ' + packet.readShort());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
		application.output('a byte is: ' + packet.readByte());
		application.output('moved to index: ' + packet.index);
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

readUTF

String
readUTF
()
Reads a UTF-8 string from the packet, starting from the current index. If an argument is specified, then it represents the length (in UTF-8 encoded bytes, not characters) of the string to read. If no argument is specified, then first a 32 bits (4 byte) int is read from the packet and that will be the byte length of the string. Advances the index with a number of positions that depends on the length of the read string.

Returns

String

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('message is: ' + packet.readUTF());
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

readUTF

String
readUTF
(length)
Reads a UTF-8 string from the packet, starting from the current index. If an argument is specified, then it represents the length (in UTF-8 encoded bytes, not characters) of the string to read. If no argument is specified, then first a 32 bits (4 byte) int is read from the packet and that will be the byte length of the string. Advances the index with a number of positions that depends on the length of the read string.

Parameters

{Number} length

Returns

String

Sample

var packet;
while (packet = plugins.udp.getReceivedPacket()) {
	application.output('packet received from ' + packet.getHost() + ':' + packet.getPort());
	if (packet.getLength() > 0) {
		application.output('message is: ' + packet.readUTF());
	}
	else {
		application.output('end of communication.');
		break;
	}
}
 

writeByte

void
writeByte
(number)
Writes one byte into the packet, at the current index. The index is advanced with one position.

Parameters

{Number} number

Returns

void

Sample

if (!plugins.udp.startSocket('5555', packetReceived)) {
	application.output('Failed to start socket.');
} else {
	var packet = plugins.udp.createNewPacket();
	packet.writeUTF('hello world!');
	plugins.udp.sendPacket('localhost', packet, 1234);
	packet = plugins.udp.createNewPacket();
	packet.writeByte(0xFF);
	packet.writeShort(10001);
	packet.writeInt(2000000001);
	plugins.udp.sendPacket('localhost', packet, 1234);
	var imgBytes = plugins.file.readFile('logo.jpg', 1024);
	packet = plugins.udp.createNewPacket();
	packet.writeBytes(imgBytes);
	plugins.udp.sendPacket('localhost', packet, 1234);
	plugins.udp.stopSocket();
}
 

writeBytes

void
writeBytes
(bytes)
Writes an array of bytes into the packet, at the current index. The index is advanced with a number of positions equal to the length of the written array.

Parameters

{byte[]} bytes

Returns

void

Sample

if (!plugins.udp.startSocket('5555', packetReceived)) {
	application.output('Failed to start socket.');
} else {
	var packet = plugins.udp.createNewPacket();
	packet.writeUTF('hello world!');
	plugins.udp.sendPacket('localhost', packet, 1234);
	packet = plugins.udp.createNewPacket();
	packet.writeByte(0xFF);
	packet.writeShort(10001);
	packet.writeInt(2000000001);
	plugins.udp.sendPacket('localhost', packet, 1234);
	var imgBytes = plugins.file.readFile('logo.jpg', 1024);
	packet = plugins.udp.createNewPacket();
	packet.writeBytes(imgBytes);
	plugins.udp.sendPacket('localhost', packet, 1234);
	plugins.udp.stopSocket();
}
 

writeInt

void
writeInt
(number)
Writes a 32 bits int into the packet, at the current index. The index is advances with 4 positions.

Parameters

{Number} number

Returns

void

Sample

if (!plugins.udp.startSocket('5555', packetReceived)) {
	application.output('Failed to start socket.');
} else {
	var packet = plugins.udp.createNewPacket();
	packet.writeUTF('hello world!');
	plugins.udp.sendPacket('localhost', packet, 1234);
	packet = plugins.udp.createNewPacket();
	packet.writeByte(0xFF);
	packet.writeShort(10001);
	packet.writeInt(2000000001);
	plugins.udp.sendPacket('localhost', packet, 1234);
	var imgBytes = plugins.file.readFile('logo.jpg', 1024);
	packet = plugins.udp.createNewPacket();
	packet.writeBytes(imgBytes);
	plugins.udp.sendPacket('localhost', packet, 1234);
	plugins.udp.stopSocket();
}
 

writeShort

void
writeShort
(number)
Writes a 16 bits short value into the packet, at the current index. The index is advances with 2 positions.

Parameters

{Number} number

Returns

void

Sample

if (!plugins.udp.startSocket('5555', packetReceived)) {
	application.output('Failed to start socket.');
} else {
	var packet = plugins.udp.createNewPacket();
	packet.writeUTF('hello world!');
	plugins.udp.sendPacket('localhost', packet, 1234);
	packet = plugins.udp.createNewPacket();
	packet.writeByte(0xFF);
	packet.writeShort(10001);
	packet.writeInt(2000000001);
	plugins.udp.sendPacket('localhost', packet, 1234);
	var imgBytes = plugins.file.readFile('logo.jpg', 1024);
	packet = plugins.udp.createNewPacket();
	packet.writeBytes(imgBytes);
	plugins.udp.sendPacket('localhost', packet, 1234);
	plugins.udp.stopSocket();
}
 

writeUTF

Number
writeUTF
(string)
Writes an UTF-8 encoded string into the packet, at the current index. First the length of the string is written on 4 bytes, then the string is written. The index is advanced with a number of positions equal to the length of the string plus 4.

Parameters

{String} string

Returns

Number

Sample

if (!plugins.udp.startSocket('5555', packetReceived)) {
	application.output('Failed to start socket.');
} else {
	var packet = plugins.udp.createNewPacket();
	packet.writeUTF('hello world!');
	plugins.udp.sendPacket('localhost', packet, 1234);
	packet = plugins.udp.createNewPacket();
	packet.writeByte(0xFF);
	packet.writeShort(10001);
	packet.writeInt(2000000001);
	plugins.udp.sendPacket('localhost', packet, 1234);
	var imgBytes = plugins.file.readFile('logo.jpg', 1024);
	packet = plugins.udp.createNewPacket();
	packet.writeBytes(imgBytes);
	plugins.udp.sendPacket('localhost', packet, 1234);
	plugins.udp.stopSocket();
}