func ParseV23Frame(reader io.Reader) Framer {
data := make([]byte, FrameHeaderSize)
if n, err := io.ReadFull(reader, data); n < FrameHeaderSize || err != nil {
return nil
}
id := string(data[:4])
t, ok := V23FrameTypeMap[id]
if !ok {
return nil
}
size, err := encodedbytes.NormInt(data[4:8])
if err != nil {
return nil
}
h := FrameHead{
FrameType: t,
statusFlags: data[8],
formatFlags: data[9],
size: size,
}
frameData := make([]byte, size)
if n, err := io.ReadFull(reader, frameData); n < int(size) || err != nil {
return nil
}
return t.constructor(h, frameData)
}
func ParseV22Frame(reader io.Reader) Framer {
data := make([]byte, V22FrameHeaderSize)
if n, err := io.ReadFull(reader, data); n < V22FrameHeaderSize || err != nil {
return nil
}
id := string(data[:3])
t, ok := V22FrameTypeMap[id]
if !ok {
return nil
}
size, err := encodedbytes.NormInt(data[3:6])
if err != nil {
return nil
}
h := FrameHead{
FrameType: t,
size: size,
}
frameData := make([]byte, size)
if n, err := io.ReadFull(reader, frameData); n < int(size) || err != nil {
return nil
}
return t.constructor(h, frameData)
}