mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-10 02:53:12 +00:00
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package outbound
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import (
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"context"
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"net"
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"runtime"
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"time"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/bufio"
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E "github.com/sagernet/sing/common/exceptions"
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N "github.com/sagernet/sing/common/network"
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)
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type myOutboundAdapter struct {
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protocol string
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logger log.Logger
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tag string
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dialer N.Dialer
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}
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func (a *myOutboundAdapter) Type() string {
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return a.protocol
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}
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func (a *myOutboundAdapter) Tag() string {
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return a.tag
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}
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func CopyEarlyConn(ctx context.Context, conn net.Conn, serverConn net.Conn) error {
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_payload := buf.StackNew()
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payload := common.Dup(_payload)
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err := conn.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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if err != nil {
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return err
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}
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_, err = payload.ReadFrom(conn)
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if err != nil && !E.IsTimeout(err) {
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return E.Cause(err, "read payload")
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}
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err = conn.SetReadDeadline(time.Time{})
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if err != nil {
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payload.Release()
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return err
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}
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_, err = serverConn.Write(payload.Bytes())
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if err != nil {
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return E.Cause(err, "client handshake")
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}
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runtime.KeepAlive(_payload)
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return bufio.CopyConn(ctx, conn, serverConn)
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}
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