w.writeMessage(message);
// Create a cancel request and send it to the server.
ByteStringBuilder builder = new ByteStringBuilder();
ASN1Writer writer = ASN1.getWriter(builder);
writer.writeStartSequence();
writer.writeInteger(2);
writer.writeEndSequence();
ExtendedRequestProtocolOp extendedRequest =
new ExtendedRequestProtocolOp(OID_CANCEL_REQUEST,
builder.toByteString());
message = new LDAPMessage(3, extendedRequest);
w.writeMessage(message);