public void readFrom(DataInput in) throws Exception {
type = in.readByte();
switch (type) {
case DATA:
seqno = Bits.readLong(in);
conn_id = in.readShort();
first = in.readBoolean();
break;
case ACK:
seqno = Bits.readLong(in);
conn_id = in.readShort();
break;
case SEND_FIRST_SEQNO:
seqno = Bits.readLong(in);
break;
}
}
public void readFrom(DataInput in) throws Exception {
type = in.readByte();
seqno = Bits.readLong(in);
flush_ack = in.readBoolean();
}