mirror of https://github.com/v2ray/v2ray-core
63 lines
1.2 KiB
Go
63 lines
1.2 KiB
Go
package mux
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import (
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"io"
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"v2ray.com/core/common/buf"
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"v2ray.com/core/common/serial"
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)
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type Reader struct {
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reader io.Reader
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buffer *buf.Buffer
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}
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func NewReader(reader buf.Reader) *Reader {
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return &Reader{
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reader: buf.ToBytesReader(reader),
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buffer: buf.NewLocal(1024),
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}
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}
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func (r *Reader) ReadMetadata() (*FrameMetadata, error) {
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b := r.buffer
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b.Clear()
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if err := b.AppendSupplier(buf.ReadFullFrom(r.reader, 2)); err != nil {
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return nil, err
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}
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metaLen := serial.BytesToUint16(b.Bytes())
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if metaLen > 512 {
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return nil, newError("invalid metalen ", metaLen).AtWarning()
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}
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b.Clear()
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if err := b.AppendSupplier(buf.ReadFullFrom(r.reader, int(metaLen))); err != nil {
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return nil, err
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}
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return ReadFrameFrom(b.Bytes())
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}
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func (r *Reader) Read() (buf.MultiBuffer, error) {
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if err := r.buffer.Reset(buf.ReadFullFrom(r.reader, 2)); err != nil {
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return nil, err
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}
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dataLen := int(serial.BytesToUint16(r.buffer.Bytes()))
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mb := buf.NewMultiBuffer()
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for dataLen > 0 {
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readLen := buf.Size
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if dataLen < readLen {
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readLen = dataLen
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}
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b := buf.New()
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if err := b.AppendSupplier(buf.ReadFullFrom(r.reader, readLen)); err != nil {
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mb.Release()
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return nil, err
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}
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dataLen -= readLen
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mb.Append(b)
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}
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return mb, nil
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}
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