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b9adbe2002
In prep for most of the package funcs in net/interfaces to become methods in a long-lived netmon.Monitor that can cache things. (Many of the funcs are very heavy to call regularly, whereas the long-lived netmon.Monitor can subscribe to things from the OS and remember answers to questions it's asked regularly later) Updates tailscale/corp#10910 Updates tailscale/corp#18960 Updates #7967 Updates #3299 Change-Id: Ie4e8dedb70136af2d611b990b865a822cd1797e5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
45 lines
758 B
Go
45 lines
758 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package vms
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import (
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"net/netip"
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"runtime"
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"testing"
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"tailscale.com/net/netmon"
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)
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func deriveBindhost(t *testing.T) string {
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t.Helper()
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ifName, err := netmon.DefaultRouteInterface()
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if err != nil {
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t.Fatal(err)
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}
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var ret string
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err = netmon.ForeachInterfaceAddress(func(i netmon.Interface, prefix netip.Prefix) {
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if ret != "" || i.Name != ifName {
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return
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}
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ret = prefix.Addr().String()
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})
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if ret != "" {
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return ret
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}
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if err != nil {
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t.Fatal(err)
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}
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t.Fatal("can't find a bindhost")
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return "unreachable"
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}
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func TestDeriveBindhost(t *testing.T) {
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if runtime.GOOS != "linux" {
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t.Skip("requires GOOS=linux")
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}
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t.Log(deriveBindhost(t))
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}
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