Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.lisp.msg.types; |
| 17 | |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 18 | import io.netty.buffer.ByteBuf; |
| 19 | import org.onosproject.lisp.msg.exceptions.LispParseError; |
| 20 | import org.onosproject.lisp.msg.exceptions.LispReaderException; |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 21 | import org.onosproject.lisp.msg.exceptions.LispWriterException; |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 22 | |
| 23 | import java.nio.ByteBuffer; |
Jian Li | 76ea057 | 2016-08-29 12:41:16 +0900 | [diff] [blame] | 24 | import java.util.Arrays; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 25 | import java.util.Objects; |
| 26 | |
| 27 | import static com.google.common.base.MoreObjects.toStringHelper; |
| 28 | |
| 29 | /** |
| 30 | * Application data type LCAF address class. |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 31 | * <p> |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 32 | * Application data type is defined in draft-ietf-lisp-lcaf-13 |
| 33 | * https://tools.ietf.org/html/draft-ietf-lisp-lcaf-13#page-26 |
| 34 | * |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 35 | * <pre> |
| 36 | * {@literal |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 37 | * 0 1 2 3 |
| 38 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 39 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 40 | * | AFI = 16387 | Rsvd1 | Flags | |
| 41 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 42 | * | Type = 4 | Rsvd2 | 12 + n | |
| 43 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 44 | * | IP TOS, IPv6 TC, or Flow Label | Protocol | |
| 45 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 46 | * | Local Port (lower-range) | Local Port (upper-range) | |
| 47 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 48 | * | Remote Port (lower-range) | Remote Port (upper-range) | |
| 49 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 50 | * | AFI = x | Address ... | |
| 51 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
Jian Li | 8fc2d2f | 2016-08-08 14:43:53 +0900 | [diff] [blame] | 52 | * }</pre> |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 53 | */ |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 54 | public final class LispAppDataLcafAddress extends LispLcafAddress { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 55 | |
| 56 | private final byte protocol; |
| 57 | private final int ipTos; |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 58 | private final short localPortLow; |
| 59 | private final short localPortHigh; |
| 60 | private final short remotePortLow; |
| 61 | private final short remotePortHigh; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 62 | private LispAfiAddress address; |
| 63 | |
| 64 | /** |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 65 | * Initializes application data type LCAF address. |
| 66 | * |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 67 | * @param protocol protocol number |
| 68 | * @param ipTos IP type of service |
| 69 | * @param localPortLow low-ranged local port number |
| 70 | * @param localPortHigh high-ranged local port number |
| 71 | * @param remotePortLow low-ranged remote port number |
| 72 | * @param remotePortHigh high-ranged remote port number |
| 73 | * @param address address |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 74 | */ |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 75 | private LispAppDataLcafAddress(byte protocol, int ipTos, short localPortLow, |
| 76 | short localPortHigh, short remotePortLow, |
| 77 | short remotePortHigh, LispAfiAddress address) { |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 78 | super(LispCanonicalAddressFormatEnum.APPLICATION_DATA); |
| 79 | this.protocol = protocol; |
| 80 | this.ipTos = ipTos; |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 81 | this.localPortLow = localPortLow; |
| 82 | this.localPortHigh = localPortHigh; |
| 83 | this.remotePortLow = remotePortLow; |
| 84 | this.remotePortHigh = remotePortHigh; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 85 | this.address = address; |
| 86 | } |
| 87 | |
| 88 | /** |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 89 | * Initializes application data type LCAF address. |
| 90 | * |
| 91 | * @param reserved1 reserved1 |
| 92 | * @param reserved2 reserved2 |
| 93 | * @param flag flag |
| 94 | * @param length length |
| 95 | * @param protocol protocol number |
| 96 | * @param ipTos IP type of service |
| 97 | * @param localPortLow low-ranged local port number |
| 98 | * @param localPortHigh high-ranged local port number |
| 99 | * @param remotePortLow low-ranged remote port number |
| 100 | * @param remotePortHigh high-ranged remote port number |
| 101 | * @param address address |
| 102 | */ |
| 103 | private LispAppDataLcafAddress(byte reserved1, byte reserved2, byte flag, short length, |
| 104 | byte protocol, int ipTos, short localPortLow, |
| 105 | short localPortHigh, short remotePortLow, |
| 106 | short remotePortHigh, LispAfiAddress address) { |
| 107 | super(LispCanonicalAddressFormatEnum.APPLICATION_DATA, reserved1, reserved2, flag, length); |
| 108 | this.protocol = protocol; |
| 109 | this.ipTos = ipTos; |
| 110 | this.localPortLow = localPortLow; |
| 111 | this.localPortHigh = localPortHigh; |
| 112 | this.remotePortLow = remotePortLow; |
| 113 | this.remotePortHigh = remotePortHigh; |
| 114 | this.address = address; |
| 115 | } |
| 116 | |
| 117 | /** |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 118 | * Obtains protocol number. |
| 119 | * |
| 120 | * @return protocol number |
| 121 | */ |
| 122 | public byte getProtocol() { |
| 123 | return protocol; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Obtains IP type of service. |
| 128 | * |
| 129 | * @return IP type of service |
| 130 | */ |
| 131 | public int getIpTos() { |
| 132 | return ipTos; |
| 133 | } |
| 134 | |
| 135 | /** |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 136 | * Obtains low-ranged local port number. |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 137 | * |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 138 | * @return low-ranged local port number |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 139 | */ |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 140 | public short getLocalPortLow() { |
| 141 | return localPortLow; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | /** |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 145 | * Obtains high-ranged local port number. |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 146 | * |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 147 | * @return high-ranged local port number |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 148 | */ |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 149 | public short getLocalPortHigh() { |
| 150 | return localPortHigh; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Obtains low-ranged remote port number. |
| 155 | * |
| 156 | * @return low-ranged remote port number |
| 157 | */ |
| 158 | public short getRemotePortLow() { |
| 159 | return remotePortLow; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Obtains high-ranged remote port number. |
| 164 | * |
| 165 | * @return high-ranged remote port number |
| 166 | */ |
| 167 | public short getRemotePortHigh() { |
| 168 | return remotePortHigh; |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Obtains address. |
| 173 | * |
| 174 | * @return address |
| 175 | */ |
| 176 | public LispAfiAddress getAddress() { |
| 177 | return address; |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public int hashCode() { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 182 | return Objects.hash(address, protocol, ipTos, localPortLow, |
| 183 | localPortHigh, remotePortLow, remotePortHigh); |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | @Override |
| 187 | public boolean equals(Object obj) { |
| 188 | if (this == obj) { |
| 189 | return true; |
| 190 | } |
| 191 | |
| 192 | if (obj instanceof LispAppDataLcafAddress) { |
| 193 | final LispAppDataLcafAddress other = (LispAppDataLcafAddress) obj; |
| 194 | return Objects.equals(this.address, other.address) && |
| 195 | Objects.equals(this.protocol, other.protocol) && |
| 196 | Objects.equals(this.ipTos, other.ipTos) && |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 197 | Objects.equals(this.localPortLow, other.localPortLow) && |
| 198 | Objects.equals(this.localPortHigh, other.localPortHigh) && |
| 199 | Objects.equals(this.remotePortLow, other.remotePortLow) && |
| 200 | Objects.equals(this.remotePortHigh, other.remotePortHigh); |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 201 | } |
| 202 | return false; |
| 203 | } |
| 204 | |
| 205 | @Override |
| 206 | public String toString() { |
| 207 | return toStringHelper(this) |
| 208 | .add("address", address) |
| 209 | .add("protocol", protocol) |
| 210 | .add("ip type of service", ipTos) |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 211 | .add("low-ranged local port number", localPortLow) |
| 212 | .add("high-ranged local port number", localPortHigh) |
| 213 | .add("low-ranged remote port number", remotePortLow) |
| 214 | .add("high-ranged remote port number", remotePortHigh) |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 215 | .toString(); |
| 216 | } |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 217 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 218 | public static final class AppDataAddressBuilder |
| 219 | extends LcafAddressBuilder<AppDataAddressBuilder> { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 220 | private byte protocol; |
| 221 | private int ipTos; |
| 222 | private short localPortLow; |
| 223 | private short localPortHigh; |
| 224 | private short remotePortLow; |
| 225 | private short remotePortHigh; |
| 226 | private LispAfiAddress address; |
| 227 | |
| 228 | /** |
| 229 | * Sets protocol number. |
| 230 | * |
| 231 | * @param protocol protocol number |
| 232 | * @return AppDataAddressBuilder object |
| 233 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 234 | public AppDataAddressBuilder withProtocol(byte protocol) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 235 | this.protocol = protocol; |
| 236 | return this; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Sets IP type of service. |
| 241 | * |
| 242 | * @param ipTos IP type of service |
| 243 | * @return AppDataAddressBuilder object |
| 244 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 245 | public AppDataAddressBuilder withIpTos(int ipTos) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 246 | this.ipTos = ipTos; |
| 247 | return this; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Sets low-ranged local port number. |
| 252 | * |
| 253 | * @param localPortLow low-ranged local port number |
| 254 | * @return AppDataAddressBuilder object |
| 255 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 256 | public AppDataAddressBuilder withLocalPortLow(short localPortLow) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 257 | this.localPortLow = localPortLow; |
| 258 | return this; |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Sets high-ranged local port number. |
| 263 | * |
| 264 | * @param localPortHigh high-ranged local port number |
| 265 | * @return AppDataAddressBuilder object |
| 266 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 267 | public AppDataAddressBuilder withLocalPortHigh(short localPortHigh) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 268 | this.localPortHigh = localPortHigh; |
| 269 | return this; |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Sets low-ranged remote port number. |
| 274 | * |
| 275 | * @param remotePortLow low-ranged remote port number |
| 276 | * @return AppDataAddressBuilder object |
| 277 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 278 | public AppDataAddressBuilder withRemotePortLow(short remotePortLow) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 279 | this.remotePortLow = remotePortLow; |
| 280 | return this; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Sets high-ranged remote port number. |
| 285 | * |
| 286 | * @param remotePortHigh high-ranged remote port number |
| 287 | * @return AppDataAddressBuilder object |
| 288 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 289 | public AppDataAddressBuilder withRemotePortHigh(short remotePortHigh) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 290 | this.remotePortHigh = remotePortHigh; |
| 291 | return this; |
| 292 | } |
| 293 | |
| 294 | /** |
| 295 | * Sets AFI address. |
| 296 | * |
| 297 | * @param address AFI address |
| 298 | * @return AppDataAddressBuilder object |
| 299 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 300 | public AppDataAddressBuilder withAddress(LispAfiAddress address) { |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 301 | this.address = address; |
| 302 | return this; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Builds LispAppDataLcafAddress instance. |
| 307 | * |
| 308 | * @return LispAddDataLcafAddress instance |
| 309 | */ |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 310 | public LispAppDataLcafAddress build() { |
| 311 | return new LispAppDataLcafAddress(reserved1, reserved2, flag, length, |
| 312 | protocol, ipTos, localPortLow, localPortHigh, remotePortLow, |
| 313 | remotePortHigh, address); |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 314 | } |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Application data LCAF address reader class. |
| 319 | */ |
| 320 | public static class AppDataLcafAddressReader |
| 321 | implements LispAddressReader<LispAppDataLcafAddress> { |
| 322 | |
| 323 | @Override |
| 324 | public LispAppDataLcafAddress readFrom(ByteBuf byteBuf) throws LispParseError, LispReaderException { |
| 325 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 326 | LispLcafAddress lcafAddress = LispLcafAddress.deserializeCommon(byteBuf); |
| 327 | |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 328 | byte[] ipTosByte = new byte[3]; |
| 329 | byteBuf.readBytes(ipTosByte); |
| 330 | |
| 331 | byte protocol = (byte) byteBuf.readUnsignedByte(); |
| 332 | int ipTos = getPartialInt(ipTosByte); |
| 333 | short localPortLow = (short) byteBuf.readUnsignedShort(); |
| 334 | short localPortHigh = (short) byteBuf.readUnsignedShort(); |
| 335 | short remotePortLow = (short) byteBuf.readUnsignedShort(); |
| 336 | short remotePortHigh = (short) byteBuf.readUnsignedShort(); |
| 337 | |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 338 | LispAfiAddress address = new LispAfiAddress.AfiAddressReader().readFrom(byteBuf); |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 339 | |
| 340 | return new AppDataAddressBuilder() |
Jian Li | a7b394d | 2016-08-21 23:11:46 +0900 | [diff] [blame] | 341 | .withReserved1(lcafAddress.getReserved1()) |
| 342 | .withReserved2(lcafAddress.getReserved2()) |
| 343 | .withFlag(lcafAddress.getFlag()) |
| 344 | .withLength(lcafAddress.getLength()) |
| 345 | .withProtocol(protocol) |
| 346 | .withIpTos(ipTos) |
| 347 | .withLocalPortLow(localPortLow) |
| 348 | .withLocalPortHigh(localPortHigh) |
| 349 | .withRemotePortLow(remotePortLow) |
| 350 | .withRemotePortHigh(remotePortHigh) |
| 351 | .withAddress(address) |
| 352 | .build(); |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 353 | } |
| 354 | |
| 355 | /** |
Jian Li | 76ea057 | 2016-08-29 12:41:16 +0900 | [diff] [blame] | 356 | * An utility function that obtains the partial int value from byte arrays. |
Jian Li | 115d860 | 2016-08-15 20:21:53 +0900 | [diff] [blame] | 357 | * |
| 358 | * @param bytes an array of bytes |
| 359 | * @return converted integer |
| 360 | */ |
| 361 | public static int getPartialInt(byte[] bytes) { |
| 362 | ByteBuffer buffer = ByteBuffer.allocate(4); |
| 363 | buffer.position(4 - bytes.length); |
| 364 | buffer.put(bytes); |
| 365 | buffer.position(0); |
| 366 | return buffer.getInt(); |
| 367 | } |
| 368 | } |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 369 | |
| 370 | /** |
| 371 | * Application data LCAF address writer class. |
| 372 | */ |
| 373 | public static class AppDataLcafAddressWriter |
| 374 | implements LispAddressWriter<LispAppDataLcafAddress> { |
| 375 | |
| 376 | @Override |
| 377 | public void writeTo(ByteBuf byteBuf, LispAppDataLcafAddress address) |
| 378 | throws LispWriterException { |
| 379 | |
| 380 | LispLcafAddress.serializeCommon(byteBuf, address); |
| 381 | |
Jian Li | 76ea057 | 2016-08-29 12:41:16 +0900 | [diff] [blame] | 382 | byte[] tos = getPartialByteArray(address.getIpTos()); |
| 383 | byteBuf.writeBytes(tos); |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 384 | byteBuf.writeByte(address.getProtocol()); |
| 385 | byteBuf.writeShort(address.getLocalPortLow()); |
| 386 | byteBuf.writeShort(address.getLocalPortHigh()); |
| 387 | byteBuf.writeShort(address.getRemotePortLow()); |
| 388 | byteBuf.writeShort(address.getRemotePortHigh()); |
| 389 | |
| 390 | AfiAddressWriter writer = new LispAfiAddress.AfiAddressWriter(); |
| 391 | writer.writeTo(byteBuf, address.getAddress()); |
| 392 | } |
Jian Li | 76ea057 | 2016-08-29 12:41:16 +0900 | [diff] [blame] | 393 | |
| 394 | /** |
| 395 | * An utility function that obtains byte array from partial int value. |
| 396 | * |
| 397 | * @param value integer value |
| 398 | * @return an array of bytes |
| 399 | */ |
| 400 | public static byte[] getPartialByteArray(int value) { |
| 401 | ByteBuffer buffer = ByteBuffer.allocate(4); |
| 402 | byte[] array = buffer.putInt(value).array(); |
| 403 | return Arrays.copyOfRange(array, 1, 4); |
| 404 | } |
GUNi | ba87170 | 2016-08-22 21:06:02 +0900 | [diff] [blame] | 405 | } |
Jian Li | c7e20a5 | 2016-07-18 19:03:49 +0900 | [diff] [blame] | 406 | } |