func (ch *chatChan) validatePacket(chatPkt *packet.ChatPacket) error {
if ch.isOutgoing && chatPkt.GetChatMessage() != nil {
return fmt.Errorf("received chat message on outgoing channel")
}
if !ch.isOutgoing && chatPkt.GetChatAcknowledge() != nil {
return fmt.Errorf("received chat ack message on inbound channel")
}
return nil
}
func (ch *chatChan) onPacket(rawPkt []byte) (err error) {
log := ch.conn.endpoint.log
var chatPkt packet.ChatPacket
if err = proto.Unmarshal(rawPkt, &chatPkt); err != nil {
return
}
if err = ch.validatePacket(&chatPkt); err != nil {
return
}
if chatMsg := chatPkt.GetChatMessage(); chatMsg != nil {
accepted := true
msgText := chatMsg.GetMessageText()
deltaT := chatMsg.GetTimeDelta()
msgID := chatMsg.GetMessageId()
if len(msgText) > MessageMaxCharacters {
log.Printf("[%v]: Oversized chat message, rejecting")
accepted = false
}
// Deliver the chat message to the caller.
if accepted {
log.Printf("[%v]: %v:%v '%v'", ch.conn.hostname, msgID, deltaT, msgText)
ch.conn.endpoint.onMessageReceived(ch.conn.hostname, msgText)
}
// Ack the packet.
if chatMsg.MessageId != nil {
err = ch.sendChatAck(chatMsg.GetMessageId(), accepted)
}
}
if chatAck := chatPkt.GetChatAcknowledge(); chatAck != nil {
// XXX: Handle the ACK somehow.
log.Printf("[%v]: ACK: %d Accepted: %v", ch.conn.hostname, chatAck.GetMessageId(), chatAck.GetAccepted())
}
return nil
}