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https://github.com/tailscale/tailscale.git
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71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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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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//
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// The netns package also handles connecting via SOCKS proxies when
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// configured by the environment.
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package netns
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import (
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"flag"
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"testing"
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)
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var extNetwork = flag.Bool("use-external-network", false, "use the external network in tests")
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func TestDial(t *testing.T) {
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if !*extNetwork {
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t.Skip("skipping test without --use-external-network")
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}
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d := NewDialer(t.Logf)
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c, err := d.Dial("tcp", "google.com:80")
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if err != nil {
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t.Fatal(err)
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}
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defer c.Close()
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t.Logf("got addr %v", c.RemoteAddr())
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c, err = d.Dial("tcp4", "google.com:80")
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if err != nil {
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t.Fatal(err)
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}
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defer c.Close()
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t.Logf("got addr %v", c.RemoteAddr())
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}
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func TestIsLocalhost(t *testing.T) {
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tests := []struct {
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name string
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host string
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want bool
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}{
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{"IPv4 loopback", "127.0.0.1", true},
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{"IPv4 !loopback", "192.168.0.1", false},
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{"IPv4 loopback with port", "127.0.0.1:1", true},
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{"IPv4 !loopback with port", "192.168.0.1:1", false},
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{"IPv4 unspecified", "0.0.0.0", false},
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{"IPv4 unspecified with port", "0.0.0.0:1", false},
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{"IPv6 loopback", "::1", true},
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{"IPv6 !loopback", "2001:4860:4860::8888", false},
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{"IPv6 loopback with port", "[::1]:1", true},
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{"IPv6 !loopback with port", "[2001:4860:4860::8888]:1", false},
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{"IPv6 unspecified", "::", false},
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{"IPv6 unspecified with port", "[::]:1", false},
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{"empty", "", false},
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{"hostname", "example.com", false},
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{"localhost", "localhost", true},
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{"localhost6", "localhost6", true},
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{"localhost with port", "localhost:1", true},
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{"localhost6 with port", "localhost6:1", true},
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{"ip6-localhost", "ip6-localhost", true},
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{"ip6-localhost with port", "ip6-localhost:1", true},
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{"ip6-loopback", "ip6-loopback", true},
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{"ip6-loopback with port", "ip6-loopback:1", true},
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}
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for _, test := range tests {
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if got := isLocalhost(test.host); got != test.want {
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t.Errorf("isLocalhost(%q) = %v, want %v", test.name, got, test.want)
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}
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}
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}
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