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Property Summary
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Method Summary
byte[]
getByteArray()
Returns the content of the package into a byte array.
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.
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Property Details
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.
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; } }
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Method Details
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
()
Returns the name of the host that sent the packet.
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
()
Returns the length of the packet in bytes.
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
()
Returns the port where the packet originated from.
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
()
Reads an 8 bits byte value from the packet, starting from the current index. Advances the index with one position.
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
()
Reads a 32 bits int value from the packet, starting from the current index. Advances the index with 4 positions.
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
()
Reads a 32 bits short value from the packet, starting from the current index. Advances the index with 2 positions.
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
()
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.
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
(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.
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; } }
void
writeByte
(number)
Writes one byte into the packet, at the current index. The index is advanced with one position.
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(); }
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(); }
void
writeInt
(number)
Writes a 32 bits int into the packet, at the current index. The index is advances with 4 positions.
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(); }
void
writeShort
(number)
Writes a 16 bits short value into the packet, at the current index. The index is advances with 2 positions.
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
(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.
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(); }