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34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
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// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package netns contains the common code for using the Go net package
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// in a logical "network namespace" to avoid routing loops where
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// Tailscale-created packets would otherwise loop back through
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// Tailscale routes.
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//
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// Despite the name netns, the exact mechanism used differs by
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// operating system, and perhaps even by version of the OS.
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package netns
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import (
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"net"
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"syscall"
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)
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// Listener returns a new net.Listener with its Control hook func
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// initialized as necessary to run in logical network namespace that
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// doesn't route back into Tailscale.
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func Listener() *net.ListenConfig {
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return &net.ListenConfig{Control: control}
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}
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// control marks c as necessary to dial in a separate network namespace.
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//
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// It's intentionally the same signature as net.Dialer.Control
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// and net.ListenConfig.Control.
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func control(network, address string, c syscall.RawConn) error {
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// TODO: implement
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return nil
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}
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