mirror of https://github.com/v2fly/v2ray-core.git
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package mux
|
|
|
|
import (
|
|
"io"
|
|
|
|
"github.com/v2fly/v2ray-core/v4/common/buf"
|
|
"github.com/v2fly/v2ray-core/v4/common/crypto"
|
|
"github.com/v2fly/v2ray-core/v4/common/serial"
|
|
)
|
|
|
|
// PacketReader is an io.Reader that reads whole chunk of Mux frames every time.
|
|
type PacketReader struct {
|
|
reader io.Reader
|
|
eof bool
|
|
}
|
|
|
|
// NewPacketReader creates a new PacketReader.
|
|
func NewPacketReader(reader io.Reader) *PacketReader {
|
|
return &PacketReader{
|
|
reader: reader,
|
|
eof: false,
|
|
}
|
|
}
|
|
|
|
// ReadMultiBuffer implements buf.Reader.
|
|
func (r *PacketReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
|
|
if r.eof {
|
|
return nil, io.EOF
|
|
}
|
|
|
|
size, err := serial.ReadUint16(r.reader)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if size > buf.Size {
|
|
return nil, newError("packet size too large: ", size)
|
|
}
|
|
|
|
b := buf.New()
|
|
if _, err := b.ReadFullFrom(r.reader, int32(size)); err != nil {
|
|
b.Release()
|
|
return nil, err
|
|
}
|
|
r.eof = true
|
|
return buf.MultiBuffer{b}, nil
|
|
}
|
|
|
|
// NewStreamReader creates a new StreamReader.
|
|
func NewStreamReader(reader *buf.BufferedReader) buf.Reader {
|
|
return crypto.NewChunkStreamReaderWithChunkCount(crypto.PlainChunkSizeParser{}, reader, 1)
|
|
}
|