mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-09-09 05:26:39 -04:00
126 lines
1.9 KiB
Go
126 lines
1.9 KiB
Go
package ray
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import (
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"io"
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"sync"
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"time"
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"v2ray.com/core/common/alloc"
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)
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const (
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bufferSize = 128
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)
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// NewRay creates a new Ray for direct traffic transport.
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func NewRay() Ray {
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return &directRay{
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Input: NewStream(),
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Output: NewStream(),
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}
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}
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type directRay struct {
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Input *Stream
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Output *Stream
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}
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func (v *directRay) OutboundInput() InputStream {
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return v.Input
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}
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func (v *directRay) OutboundOutput() OutputStream {
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return v.Output
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}
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func (v *directRay) InboundInput() OutputStream {
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return v.Input
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}
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func (v *directRay) InboundOutput() InputStream {
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return v.Output
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}
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type Stream struct {
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access sync.RWMutex
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closed bool
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buffer chan *alloc.Buffer
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}
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func NewStream() *Stream {
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return &Stream{
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buffer: make(chan *alloc.Buffer, bufferSize),
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}
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}
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func (v *Stream) Read() (*alloc.Buffer, error) {
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if v.buffer == nil {
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return nil, io.EOF
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}
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v.access.RLock()
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if v.buffer == nil {
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v.access.RUnlock()
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return nil, io.EOF
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}
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channel := v.buffer
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v.access.RUnlock()
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result, open := <-channel
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if !open {
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return nil, io.EOF
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}
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return result, nil
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}
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func (v *Stream) Write(data *alloc.Buffer) error {
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for !v.closed {
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err := v.TryWriteOnce(data)
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if err != io.ErrNoProgress {
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return err
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}
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}
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return io.ErrClosedPipe
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}
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func (v *Stream) TryWriteOnce(data *alloc.Buffer) error {
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v.access.RLock()
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defer v.access.RUnlock()
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if v.closed {
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return io.ErrClosedPipe
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}
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select {
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case v.buffer <- data:
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return nil
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case <-time.After(2 * time.Second):
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return io.ErrNoProgress
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}
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}
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func (v *Stream) Close() {
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if v.closed {
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return
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}
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v.access.Lock()
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defer v.access.Unlock()
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if v.closed {
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return
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}
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v.closed = true
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close(v.buffer)
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}
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func (v *Stream) Release() {
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if v.buffer == nil {
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return
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}
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v.Close()
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v.access.Lock()
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defer v.access.Unlock()
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if v.buffer == nil {
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return
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}
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for data := range v.buffer {
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data.Release()
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}
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v.buffer = nil
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}
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