/**
* Handle a simple ping request.
*
* @param channel the channel
* @param header the protocol header
* @throws IOException for any error
*/
protected static void handlePing(final Channel channel, final ManagementProtocolHeader header)
throws IOException {
final ManagementProtocolHeader response = new ManagementPongHeader(header.getVersion());
final MessageOutputStream output = channel.writeMessage();
try {
writeHeader(response, output);
output.close();
} finally {
StreamUtils.safeClose(output);
}
}
protected static void writeResponse(
final Channel channel, final ManagementRequestHeader header, final Exception error)
throws IOException {
final ManagementResponseHeader response = ManagementResponseHeader.create(header, error);
final MessageOutputStream output = channel.writeMessage();
try {
writeHeader(response, output);
output.close();
} finally {
StreamUtils.safeClose(output);
}
}
private void sendVersionZeroHeader(Channel channel) throws IOException {
log.debug("Selecting version 0x00 to receive full version list.");
CancellableDataOutputStream dos = new CancellableDataOutputStream(channel.writeMessage());
try {
dos.writeBytes(JMX);
dos.writeByte(0x00);
String remotingJMXVersion = Version.getVersionString();
byte[] versionBytes = remotingJMXVersion.getBytes("UTF-8");
dos.writeInt(versionBytes.length);
dos.write(versionBytes);
} catch (IOException e) {
dos.cancel();
throw e;
} finally {
IoUtils.safeClose(dos);
}
}