| package org.onlab.packet; |
| |
| /* |
| * Copyright 2014-2015 Open Networking Laboratory |
| * |
| * 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. |
| */ |
| |
| /** |
| * Representation of a transport layer port. |
| */ |
| public class TransportPort { |
| |
| private final int port; |
| |
| // Transport layer port is unsigned 16 bits integer. |
| public static final int MAX_PORT = 0xFFFF; |
| public static final int MIN_PORT = 0; |
| |
| /** |
| * Constructs a new TransportPort. |
| * |
| * @param value the transport layer port |
| */ |
| protected TransportPort(int value) { |
| this.port = value; |
| } |
| |
| /** |
| * Converts an integer into a TransportPort. |
| * |
| * @param value an integer representing the transport layer port |
| * @return a TransportPort |
| * @throws IllegalArgumentException if the value is invalid |
| */ |
| public static TransportPort transportPort(int value) { |
| if (value < MIN_PORT || value > MAX_PORT) { |
| throw new IllegalArgumentException( |
| "Transport layer port value " + value + "is not in the interval [0, 0xFFFF]"); |
| } |
| return new TransportPort(value); |
| } |
| |
| /** |
| * Returns the integer value for this transport port. |
| * |
| * @return an integer value |
| */ |
| public int toInt() { |
| return this.port; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| |
| if (obj instanceof TransportPort) { |
| |
| TransportPort other = (TransportPort) obj; |
| |
| if (this.port == other.port) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#hashCode() |
| */ |
| @Override |
| public int hashCode() { |
| return this.port; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#toString() |
| */ |
| @Override |
| public String toString() { |
| return String.valueOf(this.port); |
| } |
| } |