// Decode decodes the next raft message. If there is no data to read it returns
// io.EOF.
func (d *Decoder) Decode(m *raftpb.Message) error {
var buf [4]byte
b := buf[:4]
n, err := d.r.Read(b)
if err != nil {
return err
}
if n != 4 {
return ErrNoEnoughData
}
s := int(binary.BigEndian.Uint32(b))
b = make([]byte, s)
n, err = io.ReadFull(d.r, b)
if err != nil {
return err
}
if n != s {
return ErrNoEnoughData
}
m.Unmarshal(b)
return nil
}
