josx.rcxcomm
Class F7DeliveryHandler
java.lang.Object
josx.rcxcomm.PacketHandler
josx.rcxcomm.F7DeliveryHandler
public class F7DeliveryHandler
- extends PacketHandler
A packet handler that attempts (but doesn't fully succeed in) reliable
delivery for F7 Lego firmware opcode packets. It implements acks, and checks
packet validity, but has no sequence number checking. Packets are not
guaranteed to get through, and duplicates can occur undetected. See F7Handler
for more information.
Method Summary |
boolean |
isPacketAvailable()
Check if a packet is available |
int |
receivePacket(byte[] buffer)
Receive a packet, and send an ack. |
boolean |
sendPacket(byte[] packet,
int len)
Send a packet, checking for returned ack. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
F7DeliveryHandler
public F7DeliveryHandler(PacketHandler handler)
sendPacket
public boolean sendPacket(byte[] packet,
int len)
- Send a packet, checking for returned ack.
- Specified by:
sendPacket
in class PacketHandler
- Parameters:
packet
- the bytes to sendlen
- the number of bytes to send
- Returns:
- true if the send was successful, else false
receivePacket
public int receivePacket(byte[] buffer)
- Receive a packet, and send an ack.
- Specified by:
receivePacket
in class PacketHandler
- Parameters:
buffer
- the buffer to receive the packet into
- Returns:
- the number of bytes received
isPacketAvailable
public boolean isPacketAvailable()
- Check if a packet is available
- Specified by:
isPacketAvailable
in class PacketHandler
- Returns:
- true if a Packet is available, else false