Examples of HeaderPacket

com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

 Offset  Length     Description 0       3        Packet body length stored with the low byte first. 3       1        Packet sequence number. The sequence numbers are reset with each new command.  While the correct packet sequencing is ensured by the underlying transmission protocol, this field is used for the sanity checks of the application logic.

The Packet Header will not be shown in the descriptions of packets that follow this section. Think of it as always there. But logically, it "precedes the packet" rather than "is included in the packet".
@author fujohnwang

p2pradio.packets.HeaderPacket

Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        binlogDumpCmd.binlogPosition = binlogPosition;
        binlogDumpCmd.slaveServerId = this.slaveId;
        byte[] cmdBody = binlogDumpCmd.toBytes();


        logger.info("COM_BINLOG_DUMP with position:{}", binlogDumpCmd);
        HeaderPacket binlogDumpHeader = new HeaderPacket();
        binlogDumpHeader.setPacketBodyLength(cmdBody.length);
        binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
        PacketManager.write(connector.getChannel(), new ByteBuffer[] { ByteBuffer.wrap(binlogDumpHeader.toBytes()),
                ByteBuffer.wrap(cmdBody) });
    }

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        binlogDumpCmd.binlogPosition = binlogPosition;
        binlogDumpCmd.slaveServerId = this.slaveId;
        byte[] cmdBody = binlogDumpCmd.toBytes();


        logger.info("COM_BINLOG_DUMP with position:{}", binlogDumpCmd);
        HeaderPacket binlogDumpHeader = new HeaderPacket();
        binlogDumpHeader.setPacketBodyLength(cmdBody.length);
        binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
        PacketManager.write(connector.getChannel(), new ByteBuffer[] { ByteBuffer.wrap(binlogDumpHeader.toBytes()),
                ByteBuffer.wrap(cmdBody) });
    }

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        binlogDumpCmd.binlogPosition = binlogPosition;
        binlogDumpCmd.slaveServerId = this.slaveId;
        byte[] cmdBody = binlogDumpCmd.toBytes();


        logger.info("COM_BINLOG_DUMP with position:{}", binlogDumpCmd);
        HeaderPacket binlogDumpHeader = new HeaderPacket();
        binlogDumpHeader.setPacketBodyLength(cmdBody.length);
        binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
        PacketManager.write(connector.getChannel(), new ByteBuffer[] { ByteBuffer.wrap(binlogDumpHeader.toBytes()),
                ByteBuffer.wrap(cmdBody) });
    }

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        channel.socket().setReceiveBufferSize(receiveBufferSize);
        channel.socket().setSendBufferSize(sendBufferSize);
    }


    private void negotiate(SocketChannel channel) throws IOException {
        HeaderPacket header = PacketManager.readHeader(channel, 4);
        byte[] body = PacketManager.readBytes(channel, header.getPacketBodyLength());
        if (body[0] < 0) {// check field_count
            if (body[0] == -1) {
                ErrorPacket error = new ErrorPacket();
                error.fromBytes(body);
                throw new IOException("handshake exception:\n" + error.toString());
            } else if (body[0] == -2) {
                throw new IOException("Unexpected EOF packet at handshake phase.");
            } else {
                throw new IOException("unpexpected packet with field_count=" + body[0]);
            }
        }
        HandshakeInitializationPacket handshakePacket = new HandshakeInitializationPacket();
        handshakePacket.fromBytes(body);


        logger.info("handshake initialization packet received, prepare the client authentication packet to send");


        ClientAuthenticationPacket clientAuth = new ClientAuthenticationPacket();
        clientAuth.setCharsetNumber(charsetNumber);


        clientAuth.setUsername(username);
        clientAuth.setPassword(password);
        clientAuth.setServerCapabilities(handshakePacket.serverCapabilities);
        clientAuth.setDatabaseName(defaultSchema);
        clientAuth.setScrumbleBuff(joinAndCreateScrumbleBuff(handshakePacket));


        byte[] clientAuthPkgBody = clientAuth.toBytes();
        HeaderPacket h = new HeaderPacket();
        h.setPacketBodyLength(clientAuthPkgBody.length);
        h.setPacketSequenceNumber((byte) (header.getPacketSequenceNumber() + 1));


        PacketManager.write(channel,
            new ByteBuffer[] { ByteBuffer.wrap(h.toBytes()), ByteBuffer.wrap(clientAuthPkgBody) });
        logger.info("client authentication packet is sent out.");


        // check auth result
        header = null;
        header = PacketManager.readHeader(channel, 4);

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        if (password != null && password.length() > 0) {
            r323.seed = MySQLPasswordEncrypter.scramble323(password, new String(seed)).getBytes();
        }
        byte[] b323Body = r323.toBytes();


        HeaderPacket h323 = new HeaderPacket();
        h323.setPacketBodyLength(b323Body.length);
        h323.setPacketSequenceNumber((byte) (packetSequenceNumber + 1));


        PacketManager.write(channel, new ByteBuffer[] { ByteBuffer.wrap(h323.toBytes()), ByteBuffer.wrap(b323Body) });
        logger.info("client 323 authentication packet is sent out.");
        // check auth result
        HeaderPacket header = PacketManager.readHeader(channel, 4);
        byte[] body = PacketManager.readBytes(channel, header.getPacketBodyLength());
        assert body != null;
        switch (body[0]) {
            case 0:
                break;
            case -1:

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        channel.socket().setReceiveBufferSize(receiveBufferSize);
        channel.socket().setSendBufferSize(sendBufferSize);
    }


    private void negotiate(SocketChannel channel) throws IOException {
        HeaderPacket header = PacketManager.readHeader(channel, 4);
        byte[] body = PacketManager.readBytes(channel, header.getPacketBodyLength());
        if (body[0] < 0) {// check field_count
            if (body[0] == -1) {
                ErrorPacket error = new ErrorPacket();
                error.fromBytes(body);
                throw new IOException("handshake exception:\n" + error.toString());
            } else if (body[0] == -2) {
                throw new IOException("Unexpected EOF packet at handshake phase.");
            } else {
                throw new IOException("unpexpected packet with field_count=" + body[0]);
            }
        }
        HandshakeInitializationPacket handshakePacket = new HandshakeInitializationPacket();
        handshakePacket.fromBytes(body);


        logger.info("handshake initialization packet received, prepare the client authentication packet to send");


        ClientAuthenticationPacket clientAuth = new ClientAuthenticationPacket();
        clientAuth.setCharsetNumber(charsetNumber);


        clientAuth.setUsername(username);
        clientAuth.setPassword(password);
        clientAuth.setServerCapabilities(handshakePacket.serverCapabilities);
        clientAuth.setDatabaseName(defaultSchema);
        clientAuth.setScrumbleBuff(joinAndCreateScrumbleBuff(handshakePacket));


        byte[] clientAuthPkgBody = clientAuth.toBytes();
        HeaderPacket h = new HeaderPacket();
        h.setPacketBodyLength(clientAuthPkgBody.length);
        h.setPacketSequenceNumber((byte) (header.getPacketSequenceNumber() + 1));


        PacketManager.write(channel,
            new ByteBuffer[] { ByteBuffer.wrap(h.toBytes()), ByteBuffer.wrap(clientAuthPkgBody) });
        logger.info("client authentication packet is sent out.");


        // check auth result
        header = null;
        header = PacketManager.readHeader(channel, 4);

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        byte[] b323Body = r323.toBytes();
        if (password != null && password.length() > 0) {
            r323.seed = MySQLPasswordEncrypter.scramble323(password, new String(seed)).getBytes();
        }


        HeaderPacket h323 = new HeaderPacket();
        h323.setPacketBodyLength(b323Body.length);
        h323.setPacketSequenceNumber((byte) (packetSequenceNumber + 1));


        PacketManager.write(channel, new ByteBuffer[] { ByteBuffer.wrap(h323.toBytes()), ByteBuffer.wrap(b323Body) });
        logger.info("client 323 authentication packet is sent out.");
        // check auth result
        HeaderPacket header = PacketManager.readHeader(channel, 4);
        byte[] body = PacketManager.readBytes(channel, header.getPacketBodyLength());
        assert body != null;
        switch (body[0]) {
            case 0:
                break;
            case -1:

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        binlogDumpCmd.binlogFileName = binlogfilename;
        binlogDumpCmd.binlogPosition = binlogPosition;
        binlogDumpCmd.slaveServerId = slaveId;
        byte[] cmdBody = binlogDumpCmd.toBytes();


        HeaderPacket binlogDumpHeader = new HeaderPacket();
        binlogDumpHeader.setPacketBodyLength(cmdBody.length);
        binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
        PacketManager.write(connector.getChannel(), new ByteBuffer[] { ByteBuffer.wrap(binlogDumpHeader.toBytes()),
                ByteBuffer.wrap(cmdBody) });
    }

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        binlogDumpCmd.binlogPosition = binlogPosition;
        binlogDumpCmd.slaveServerId = this.slaveId;
        byte[] cmdBody = binlogDumpCmd.toBytes();


        logger.info("COM_BINLOG_DUMP with position:{}", binlogDumpCmd);
        HeaderPacket binlogDumpHeader = new HeaderPacket();
        binlogDumpHeader.setPacketBodyLength(cmdBody.length);
        binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
        PacketManager.write(connector.getChannel(), new ByteBuffer[] { ByteBuffer.wrap(binlogDumpHeader.toBytes()),
                ByteBuffer.wrap(cmdBody) });
    }

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Examples of com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket

        ChannelBuffer buffer = ChannelBuffers.wrappedBuffer(headerBytes, commandBytes);
        return buffer;
    }


    private byte[] assembleHeaderBytes(int length) {
        HeaderPacket header = new HeaderPacket();
        header.setPacketBodyLength(length);
        header.setPacketSequenceNumber((byte) 0x00);
        return header.toBytes();
    }

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