47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
package dialer
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import (
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"context"
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"net"
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"net/netip"
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"syscall"
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)
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type TunnelDialer func(context context.Context, network, address string) (net.Conn, error)
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type SocketControl func(network, address string, conn syscall.RawConn) error
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var DefaultTunnelDialer TunnelDialer
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var DefaultSocketHook SocketControl
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func DialTunnelContext(ctx context.Context, network, address string) (net.Conn, error) {
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if dialer := DefaultTunnelDialer; dialer != nil {
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return dialer(ctx, network, address)
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}
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return DialContext(ctx, network, address)
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}
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func dialContextHooked(ctx context.Context, network string, destination netip.Addr, port string) (net.Conn, error) {
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dialer := &net.Dialer{
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Control: DefaultSocketHook,
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}
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conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(destination.String(), port))
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if err != nil {
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return nil, err
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}
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if t, ok := conn.(*net.TCPConn); ok {
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t.SetKeepAlive(false)
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}
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return conn, nil
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}
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func listenPacketHooked(ctx context.Context, network, address string) (net.PacketConn, error) {
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lc := &net.ListenConfig{
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Control: DefaultSocketHook,
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}
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return lc.ListenPacket(ctx, network, address)
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}
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