| /** |
| * Copyright 2013 Florian Schmaus |
| * |
| * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.jivesoftware.smack.util.dns; |
| |
| /** |
| * @see <a href="http://tools.ietf.org/html/rfc2782>RFC 2782: A DNS RR for specifying the location of services (DNS |
| * SRV)<a> |
| * @author Florian Schmaus |
| * |
| */ |
| public class SRVRecord extends HostAddress implements Comparable<SRVRecord> { |
| |
| private int weight; |
| private int priority; |
| |
| /** |
| * Create a new SRVRecord |
| * |
| * @param fqdn Fully qualified domain name |
| * @param port The connection port |
| * @param priority Priority of the target host |
| * @param weight Relative weight for records with same priority |
| * @throws IllegalArgumentException fqdn is null or any other field is not in valid range (0-65535). |
| */ |
| public SRVRecord(String fqdn, int port, int priority, int weight) { |
| super(fqdn, port); |
| if (weight < 0 || weight > 65535) |
| throw new IllegalArgumentException( |
| "DNS SRV records weight must be a 16-bit unsiged integer (i.e. between 0-65535. Weight was: " |
| + weight); |
| |
| if (priority < 0 || priority > 65535) |
| throw new IllegalArgumentException( |
| "DNS SRV records priority must be a 16-bit unsiged integer (i.e. between 0-65535. Priority was: " |
| + priority); |
| |
| this.priority = priority; |
| this.weight = weight; |
| |
| } |
| |
| public int getPriority() { |
| return priority; |
| } |
| |
| public int getWeight() { |
| return weight; |
| } |
| |
| @Override |
| public int compareTo(SRVRecord other) { |
| // According to RFC2782, |
| // "[a] client MUST attempt to contact the target host with the lowest-numbered priority it can reach". |
| // This means that a SRV record with a higher priority is 'less' then one with a lower. |
| int res = other.priority - this.priority; |
| if (res == 0) { |
| res = this.weight - other.weight; |
| } |
| return res; |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + " prio:" + priority + ":w:" + weight; |
| } |
| } |