87 lines
1.8 KiB
Go
87 lines
1.8 KiB
Go
package trackerconn
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import (
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"io"
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"net"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/bufio"
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N "github.com/sagernet/sing/common/network"
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"go.uber.org/atomic"
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)
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func New(conn net.Conn, readCounter *atomic.Int64, writeCounter *atomic.Int64, direct bool) N.ExtendedConn {
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trackerConn := &Conn{bufio.NewExtendedConn(conn), readCounter, writeCounter}
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if direct {
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return (*DirectConn)(trackerConn)
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} else {
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return trackerConn
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}
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}
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type Conn struct {
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N.ExtendedConn
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readCounter *atomic.Int64
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writeCounter *atomic.Int64
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}
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func (c *Conn) Read(p []byte) (n int, err error) {
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n, err = c.ExtendedConn.Read(p)
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c.readCounter.Add(int64(n))
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return n, err
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}
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func (c *Conn) ReadBuffer(buffer *buf.Buffer) error {
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err := c.ExtendedConn.ReadBuffer(buffer)
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if err != nil {
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return err
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}
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c.readCounter.Add(int64(buffer.Len()))
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return nil
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}
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func (c *Conn) Write(p []byte) (n int, err error) {
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n, err = c.ExtendedConn.Write(p)
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c.writeCounter.Add(int64(n))
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return n, err
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}
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func (c *Conn) WriteBuffer(buffer *buf.Buffer) error {
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dataLen := int64(buffer.Len())
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err := c.ExtendedConn.WriteBuffer(buffer)
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if err != nil {
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return err
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}
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c.writeCounter.Add(dataLen)
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return nil
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}
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func (c *Conn) Upstream() any {
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return c.ExtendedConn
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}
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type DirectConn Conn
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func (c *DirectConn) WriteTo(w io.Writer) (n int64, err error) {
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reader := N.UnwrapReader(c.ExtendedConn)
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if wt, ok := reader.(io.WriterTo); ok {
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n, err = wt.WriteTo(w)
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c.readCounter.Add(n)
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return
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} else {
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return bufio.Copy(w, (*Conn)(c))
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}
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}
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func (c *DirectConn) ReadFrom(r io.Reader) (n int64, err error) {
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writer := N.UnwrapWriter(c.ExtendedConn)
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if rt, ok := writer.(io.ReaderFrom); ok {
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n, err = rt.ReadFrom(r)
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c.writeCounter.Add(n)
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return
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} else {
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return bufio.Copy((*Conn)(c), r)
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}
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}
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