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## 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.

Field Summary

Fields inherited from class josx.rcxcomm.PacketHandler
`lowerHandler`

Constructor Summary
`F7DeliveryHandler(PacketHandler handler)`

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 josx.rcxcomm.PacketHandler
`close, getError, isAckAvailable, open, receiveAck, reset, setListen`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait`

Constructor Detail

### F7DeliveryHandler

    public F7DeliveryHandler(PacketHandler handler)

Method Detail

### 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 send
    `len` - 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

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