diff options
Diffstat (limited to 'src/org/traccar/protocol/NavisProtocolDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/NavisProtocolDecoder.java | 683 |
1 files changed, 0 insertions, 683 deletions
diff --git a/src/org/traccar/protocol/NavisProtocolDecoder.java b/src/org/traccar/protocol/NavisProtocolDecoder.java deleted file mode 100644 index 7ba474ae0..000000000 --- a/src/org/traccar/protocol/NavisProtocolDecoder.java +++ /dev/null @@ -1,683 +0,0 @@ -/* - * Copyright 2012 - 2019 Anton Tananaev (anton@traccar.org) - * - * 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.traccar.protocol; - -import io.netty.buffer.ByteBuf; -import io.netty.buffer.Unpooled; -import io.netty.channel.Channel; -import org.traccar.BaseProtocolDecoder; -import org.traccar.DeviceSession; -import org.traccar.NetworkMessage; -import org.traccar.Protocol; -import org.traccar.helper.BitUtil; -import org.traccar.helper.Checksum; -import org.traccar.helper.Checksum.Algorithm; -import org.traccar.helper.DateBuilder; -import org.traccar.helper.UnitsConverter; -import org.traccar.model.Position; - -import java.net.SocketAddress; -import java.nio.charset.StandardCharsets; -import java.util.LinkedList; -import java.util.List; -import java.util.Date; - -public class NavisProtocolDecoder extends BaseProtocolDecoder { - - private static final int[] FLEX_FIELDS_SIZES = { - 4, 2, 4, 1, 1, 1, 1, 1, 4, 4, 4, 4, 4, 2, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 4, 4, 2, 2, - 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 4, 2, 1, 4, 2, 2, 2, 2, 2, 1, 1, 1, 2, 4, 2, 1, - /* FLEX 2.0 */ - 8, 2, 1, 16, 4, 2, 4, 37, 1, 1, 1, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 6, 12, 24, 48, 1, 1, 1, 1, 4, 4, - 1, 4, 2, 6, 2, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 1 - }; - - private String prefix; - private long deviceUniqueId, serverId; - private int flexDataSize; - private int flexBitFieldSize; - private final byte[] flexBitField = new byte[16]; - - public NavisProtocolDecoder(Protocol protocol) { - super(protocol); - } - - public static final int F10 = 0x01; - public static final int F20 = 0x02; - public static final int F30 = 0x03; - public static final int F40 = 0x04; - public static final int F50 = 0x05; - public static final int F51 = 0x15; - public static final int F52 = 0x25; - public static final int F60 = 0x06; - - public int getFlexDataSize() { - return flexDataSize; - } - - private static boolean isFormat(int type, int... types) { - for (int i : types) { - if (type == i) { - return true; - } - } - return false; - } - - private Position parseNtcbPosition(DeviceSession deviceSession, ByteBuf buf) { - Position position = new Position(getProtocolName()); - - position.setDeviceId(deviceSession.getDeviceId()); - - int format; - if (buf.getUnsignedByte(buf.readerIndex()) == 0) { - format = buf.readUnsignedShortLE(); - } else { - format = buf.readUnsignedByte(); - } - position.set("format", format); - - position.set(Position.KEY_INDEX, buf.readUnsignedIntLE()); - position.set(Position.KEY_EVENT, buf.readUnsignedShortLE()); - - buf.skipBytes(6); // event time - - short armedStatus = buf.readUnsignedByte(); - if (isFormat(format, F10, F20, F30, F40, F50, F51, F52)) { - position.set(Position.KEY_ARMED, BitUtil.to(armedStatus, 7)); - if (BitUtil.check(armedStatus, 7)) { - position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); - } - } else if (isFormat(format, F60)) { - position.set(Position.KEY_ARMED, BitUtil.check(armedStatus, 0)); - if (BitUtil.check(armedStatus, 1)) { - position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); - } - } - - position.set(Position.KEY_STATUS, buf.readUnsignedByte()); - position.set(Position.KEY_RSSI, buf.readUnsignedByte()); - - if (isFormat(format, F10, F20, F30)) { - int output = buf.readUnsignedShortLE(); - position.set(Position.KEY_OUTPUT, output); - for (int i = 0; i < 16; i++) { - position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(output, i)); - } - } else if (isFormat(format, F50, F51, F52)) { - short extField = buf.readUnsignedByte(); - position.set(Position.KEY_OUTPUT, BitUtil.to(extField, 2)); - position.set(Position.PREFIX_OUT + 1, BitUtil.check(extField, 0)); - position.set(Position.PREFIX_OUT + 2, BitUtil.check(extField, 1)); - position.set(Position.KEY_SATELLITES, BitUtil.from(extField, 2)); - } else if (isFormat(format, F40, F60)) { - short output = buf.readUnsignedByte(); - position.set(Position.KEY_OUTPUT, BitUtil.to(output, 4)); - for (int i = 0; i < 4; i++) { - position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(output, i)); - } - } - - if (isFormat(format, F10, F20, F30, F40)) { - int input = buf.readUnsignedShortLE(); - position.set(Position.KEY_INPUT, input); - if (!isFormat(format, F40)) { - for (int i = 0; i < 16; i++) { - position.set(Position.PREFIX_IN + (i + 1), BitUtil.check(input, i)); - } - } else { - position.set(Position.PREFIX_IN + 1, BitUtil.check(input, 0)); - position.set(Position.PREFIX_IN + 2, BitUtil.check(input, 1)); - position.set(Position.PREFIX_IN + 3, BitUtil.check(input, 2)); - position.set(Position.PREFIX_IN + 4, BitUtil.check(input, 3)); - position.set(Position.PREFIX_IN + 5, BitUtil.between(input, 4, 7)); - position.set(Position.PREFIX_IN + 6, BitUtil.between(input, 7, 10)); - position.set(Position.PREFIX_IN + 7, BitUtil.between(input, 10, 12)); - position.set(Position.PREFIX_IN + 8, BitUtil.between(input, 12, 14)); - } - } else if (isFormat(format, F50, F51, F52, F60)) { - short input = buf.readUnsignedByte(); - position.set(Position.KEY_INPUT, input); - for (int i = 0; i < 8; i++) { - position.set(Position.PREFIX_IN + (i + 1), BitUtil.check(input, i)); - } - } - - position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001); - position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001); - - if (isFormat(format, F10, F20, F30)) { - position.set(Position.PREFIX_TEMP + 1, buf.readShortLE()); - } - - if (isFormat(format, F10, F20, F50, F51, F52, F60)) { - position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE()); - position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShortLE()); - } - if (isFormat(format, F60)) { - position.set(Position.PREFIX_ADC + 3, buf.readUnsignedShortLE()); - } - - // Impulse counters - if (isFormat(format, F20, F50, F51, F52, F60)) { - buf.readUnsignedIntLE(); - buf.readUnsignedIntLE(); - } - - if (isFormat(format, F60)) { - // Fuel - buf.readUnsignedShortLE(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - - position.set(Position.PREFIX_TEMP + 1, buf.readByte()); - position.set(Position.PREFIX_TEMP + 2, buf.readByte()); - position.set(Position.PREFIX_TEMP + 3, buf.readByte()); - position.set(Position.PREFIX_TEMP + 4, buf.readByte()); - position.set(Position.KEY_AXLE_WEIGHT, buf.readIntLE()); - position.set(Position.KEY_RPM, buf.readUnsignedShortLE()); - } - - if (isFormat(format, F20, F50, F51, F52, F60)) { - int navSensorState = buf.readUnsignedByte(); - position.setValid(BitUtil.check(navSensorState, 1)); - if (isFormat(format, F60)) { - position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2)); - } - - DateBuilder dateBuilder = new DateBuilder() - .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()) - .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte() + 1, buf.readUnsignedByte()); - position.setTime(dateBuilder.getDate()); - - if (isFormat(format, F60)) { - position.setLatitude(buf.readIntLE() / 600000.0); - position.setLongitude(buf.readIntLE() / 600000.0); - position.setAltitude(buf.readIntLE() * 0.1); - } else { - position.setLatitude(buf.readFloatLE() / Math.PI * 180); - position.setLongitude(buf.readFloatLE() / Math.PI * 180); - } - - position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE())); - position.setCourse(buf.readUnsignedShortLE()); - - position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000); - position.set(Position.KEY_DISTANCE, buf.readFloatLE() * 1000); - - // Segment times - buf.readUnsignedShortLE(); - buf.readUnsignedShortLE(); - } - - // Other - if (isFormat(format, F51, F52)) { - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - buf.readUnsignedShortLE(); - buf.readByte(); - buf.readUnsignedShortLE(); - } - - // Four temperature sensors - if (isFormat(format, F40, F52)) { - position.set(Position.PREFIX_TEMP + 1, buf.readByte()); - position.set(Position.PREFIX_TEMP + 2, buf.readByte()); - position.set(Position.PREFIX_TEMP + 3, buf.readByte()); - position.set(Position.PREFIX_TEMP + 4, buf.readByte()); - } - - return position; - } - - private Object processNtcbSingle(DeviceSession deviceSession, Channel channel, ByteBuf buf) { - Position position = parseNtcbPosition(deviceSession, buf); - - ByteBuf response = Unpooled.buffer(7); - response.writeCharSequence("*<T", StandardCharsets.US_ASCII); - response.writeIntLE((int) position.getLong(Position.KEY_INDEX)); - sendNtcbReply(channel, response); - - return position.getFixTime() != null ? position : null; - } - - private Object processNtcbArray(DeviceSession deviceSession, Channel channel, ByteBuf buf) { - List<Position> positions = new LinkedList<>(); - int count = buf.readUnsignedByte(); - - for (int i = 0; i < count; i++) { - Position position = parseNtcbPosition(deviceSession, buf); - if (position.getFixTime() != null) { - positions.add(position); - } - } - - ByteBuf response = Unpooled.buffer(7); - response.writeCharSequence("*<A", StandardCharsets.US_ASCII); - response.writeByte(count); - sendNtcbReply(channel, response); - - if (positions.isEmpty()) { - return null; - } - - return positions; - } - - private boolean checkFlexBitfield(int index) { - int byteIndex = Math.floorDiv(index, 8); - int bitIndex = Math.floorMod(index, 8); - return BitUtil.check(flexBitField[byteIndex], 7 - bitIndex); - } - - private Position parseFlexPosition(DeviceSession deviceSession, ByteBuf buf) { - - Position position = new Position(getProtocolName()); - - position.setDeviceId(deviceSession.getDeviceId()); - - int status = 0; - short input = 0; - short output = 0; - - for (int i = 0; i < flexBitFieldSize; i++) { - if (!checkFlexBitfield(i)) { - continue; - } - - switch (i) { - case 0: - position.set(Position.KEY_INDEX, buf.readUnsignedIntLE()); - break; - case 1: - position.set(Position.KEY_EVENT, buf.readUnsignedShortLE()); - break; - case 3: - short armedStatus = buf.readUnsignedByte(); - position.set(Position.KEY_ARMED, BitUtil.check(armedStatus, 0)); - if (BitUtil.check(armedStatus, 1)) { - position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); - } - break; - case 4: - status = buf.readUnsignedByte(); - position.set(Position.KEY_STATUS, status); - break; - case 5: - int status2 = buf.readUnsignedByte(); - position.set(Position.KEY_STATUS, (short) (BitUtil.to(status, 8) | (status2 << 8))); - break; - case 6: - position.set(Position.KEY_RSSI, buf.readUnsignedByte()); - break; - case 7: - int navSensorState = buf.readUnsignedByte(); - position.setValid(BitUtil.check(navSensorState, 1)); - position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2)); - break; - case 8: - position.setTime(new DateBuilder(new Date(buf.readUnsignedIntLE() * 1000)).getDate()); - break; - case 9: - position.setLatitude(buf.readIntLE() / 600000.0); - break; - case 10: - position.setLongitude(buf.readIntLE() / 600000.0); - break; - case 11: - position.setAltitude(buf.readIntLE() * 0.1); - break; - case 12: - position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE())); - break; - case 13: - position.setCourse(buf.readUnsignedShortLE()); - break; - case 14: - position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000); - break; - case 15: - position.set(Position.KEY_DISTANCE, buf.readFloatLE() * 1000); - break; - case 18: - position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001); - break; - case 19: - position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001); - break; - case 20: - case 21: - case 22: - case 23: - case 24: - case 25: - case 26: - case 27: - position.set(Position.PREFIX_ADC + (i - 19), buf.readUnsignedShortLE()); - break; - case 28: - input = buf.readUnsignedByte(); - position.set(Position.KEY_INPUT, input); - for (int k = 0; k < 8; k++) { - position.set(Position.PREFIX_IN + (k + 1), BitUtil.check(input, k)); - } - break; - case 29: - short input2 = buf.readUnsignedByte(); - position.set(Position.KEY_INPUT, (short) (BitUtil.to(input, 8) | (input2 << 8))); - for (int k = 0; k < 8; k++) { - position.set(Position.PREFIX_IN + (k + 9), BitUtil.check(input2, k)); - } - break; - case 30: - output = buf.readUnsignedByte(); - position.set(Position.KEY_OUTPUT, output); - for (int k = 0; k < 8; k++) { - position.set(Position.PREFIX_OUT + (k + 1), BitUtil.check(output, k)); - } - break; - case 31: - short output2 = buf.readUnsignedByte(); - position.set(Position.KEY_OUTPUT, (short) (BitUtil.to(output, 8) | (output2 << 8))); - for (int k = 0; k < 8; k++) { - position.set(Position.PREFIX_OUT + (k + 9), BitUtil.check(output2, k)); - } - break; - case 36: - position.set(Position.KEY_HOURS, buf.readUnsignedIntLE() * 1000); - break; - case 44: - case 45: - case 46: - case 47: - case 48: - case 49: - case 50: - case 51: - position.set(Position.PREFIX_TEMP + (i - 43), buf.readByte()); - break; - case 68: - position.set("can-speed", buf.readUnsignedByte()); - break; - // FLEX 2.0 - case 69: - int satVisible = 0; - for (int k = 0; k < 8; k++) { - satVisible += buf.readUnsignedByte(); - } - position.set(Position.KEY_SATELLITES_VISIBLE, satVisible); - break; - case 70: - position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1); - position.set(Position.KEY_PDOP, buf.readUnsignedByte() * 0.1); - break; - default: - if (i < FLEX_FIELDS_SIZES.length) { - buf.skipBytes(FLEX_FIELDS_SIZES[i]); - } - break; - } - } - - return position; - } - - private Position parseFlex20Position(DeviceSession deviceSession, ByteBuf buf) { - - Position position = new Position(getProtocolName()); - position.setDeviceId(deviceSession.getDeviceId()); - - int length = buf.readUnsignedShort(); - if (length <= buf.readableBytes() && buf.readUnsignedByte() == 0x0A) { - - buf.readUnsignedByte(); // length of static part - - position.set(Position.KEY_INDEX, buf.readUnsignedIntLE()); - - position.set(Position.KEY_EVENT, buf.readUnsignedShortLE()); - buf.readUnsignedInt(); // event time - - int navSensorState = buf.readUnsignedByte(); - position.setValid(BitUtil.check(navSensorState, 1)); - position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2)); - - position.setTime(new DateBuilder(new Date(buf.readUnsignedIntLE() * 1000)).getDate()); - position.setLatitude(buf.readIntLE() / 600000.0); - position.setLongitude(buf.readIntLE() / 600000.0); - position.setAltitude(buf.readIntLE() * 0.1); - position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE())); - position.setCourse(buf.readUnsignedShortLE()); - position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000); - - buf.skipBytes(length - buf.readerIndex() - 1); // skip unused part - } - - return position; - } - - private interface FlexPositionParser { - Position parsePosition(DeviceSession deviceSession, ByteBuf buf); - } - - private Object processFlexSingle( - FlexPositionParser parser, String flexHeader, DeviceSession deviceSession, Channel channel, ByteBuf buf) { - - if (!flexHeader.equals("~C")) { - buf.readUnsignedInt(); // event index - } - - Position position = parser.parsePosition(deviceSession, buf); - - ByteBuf response = Unpooled.buffer(); - response.writeCharSequence(flexHeader, StandardCharsets.US_ASCII); - response.writeIntLE((int) position.getLong(Position.KEY_INDEX)); - sendFlexReply(channel, response); - - return position.getFixTime() != null ? position : null; - } - - private Object processFlexArray( - FlexPositionParser parser, String flexHeader, DeviceSession deviceSession, Channel channel, ByteBuf buf) { - - List<Position> positions = new LinkedList<>(); - int count = buf.readUnsignedByte(); - - for (int i = 0; i < count; i++) { - Position position = parser.parsePosition(deviceSession, buf); - if (position.getFixTime() != null) { - positions.add(position); - } - } - - ByteBuf response = Unpooled.buffer(); - response.writeCharSequence(flexHeader, StandardCharsets.US_ASCII); - response.writeByte(count); - sendFlexReply(channel, response); - - return !positions.isEmpty() ? positions : null; - } - - private Object processFlexNegotiation(Channel channel, ByteBuf buf) { - if ((byte) buf.readUnsignedByte() != (byte) 0xB0) { - return null; - } - - short flexProtocolVersion = buf.readUnsignedByte(); - short flexStructVersion = buf.readUnsignedByte(); - if ((flexProtocolVersion == 0x0A || flexProtocolVersion == 0x14) - && (flexStructVersion == 0x0A || flexStructVersion == 0x14)) { - - flexBitFieldSize = buf.readUnsignedByte(); - if (flexBitFieldSize > 122) { - return null; - } - - buf.readBytes(flexBitField, 0, (int) Math.ceil((double) flexBitFieldSize / 8)); - - flexDataSize = 0; - for (int i = 0; i < flexBitFieldSize; i++) { - if (checkFlexBitfield(i)) { - flexDataSize += FLEX_FIELDS_SIZES[i]; - } - } - } else { - flexProtocolVersion = 0x14; - flexStructVersion = 0x14; - } - - ByteBuf response = Unpooled.buffer(9); - response.writeCharSequence("*<FLEX", StandardCharsets.US_ASCII); - response.writeByte(0xB0); - response.writeByte(flexProtocolVersion); - response.writeByte(flexStructVersion); - sendNtcbReply(channel, response); - - return null; - } - - private Object processHandshake(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { - buf.readByte(); // colon - if (getDeviceSession(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII)) != null) { - sendNtcbReply(channel, Unpooled.copiedBuffer("*<S", StandardCharsets.US_ASCII)); - } - return null; - } - - private void sendNtcbReply(Channel channel, ByteBuf data) { - if (channel != null) { - ByteBuf header = Unpooled.buffer(16); - header.writeCharSequence(prefix, StandardCharsets.US_ASCII); - header.writeIntLE((int) deviceUniqueId); - header.writeIntLE((int) serverId); - header.writeShortLE(data.readableBytes()); - header.writeByte(Checksum.xor(data.nioBuffer())); - header.writeByte(Checksum.xor(header.nioBuffer())); - - channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(header, data), channel.remoteAddress())); - } - } - - private void sendFlexReply(Channel channel, ByteBuf data) { - if (channel != null) { - ByteBuf cs = Unpooled.buffer(1); - cs.writeByte(Checksum.crc8(new Algorithm(8, 0x31, 0xFF, false, false, 0x00), data.nioBuffer())); - - channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(data, cs), channel.remoteAddress())); - } - } - - private Object decodeNtcb(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { - - prefix = buf.toString(buf.readerIndex(), 4, StandardCharsets.US_ASCII); - buf.skipBytes(prefix.length()); // prefix @NTC by default - serverId = buf.readUnsignedIntLE(); - deviceUniqueId = buf.readUnsignedIntLE(); - int length = buf.readUnsignedShortLE(); - buf.skipBytes(2); // header and data XOR checksum - - if (length == 0) { - return null; // keep alive message - } - - String type = buf.toString(buf.readerIndex(), 3, StandardCharsets.US_ASCII); - buf.skipBytes(type.length()); - - if (type.equals("*>S")) { - return processHandshake(channel, remoteAddress, buf); - } else { - DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); - if (deviceSession != null) { - switch (type) { - case "*>A": - return processNtcbArray(deviceSession, channel, buf); - case "*>T": - return processNtcbSingle(deviceSession, channel, buf); - case "*>F": - buf.skipBytes(3); - return processFlexNegotiation(channel, buf); - default: - break; - } - } - } - - return null; - } - - private Object decodeFlex(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { - - if (buf.getByte(buf.readerIndex()) == 0x7F) { - return null; // keep alive - } - - String type = buf.toString(buf.readerIndex(), 2, StandardCharsets.US_ASCII); - buf.skipBytes(type.length()); - - DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); - if (deviceSession != null) { - switch (type) { - // FLEX 1.0 - case "~A": - return processFlexArray(this::parseFlexPosition, type, deviceSession, channel, buf); - case "~T": - case "~C": - return processFlexSingle(this::parseFlexPosition, type, deviceSession, channel, buf); - // FLEX 2.0 (extra packages) - case "~E": - return processFlexArray(this::parseFlex20Position, type, deviceSession, channel, buf); - case "~X": - return processFlexSingle(this::parseFlex20Position, type, deviceSession, channel, buf); - default: - break; - } - } - - return null; - } - - @Override - protected Object decode( - Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { - - ByteBuf buf = (ByteBuf) msg; - - if (flexDataSize > 0) { - return decodeFlex(channel, remoteAddress, buf); - } else { - return decodeNtcb(channel, remoteAddress, buf); - } - } - -} |