mirror of
https://github.com/tailscale/tailscale.git
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46ce80758d
In prep for reducing garbage, being able to reuse memory. So far this
doesn't actually reuse much. This is just changing signatures around.
But some improvement in any case:
bradfitz@tsdev:~/src/tailscale.com$ ~/go/bin/benchstat before after
name old time/op new time/op delta
GetList-8 11.8ms ± 9% 9.9ms ± 3% -15.98% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
GetList-8 99.5kB ± 2% 91.9kB ± 0% -7.62% (p=0.000 n=9+9)
name old allocs/op new allocs/op delta
GetList-8 3.05k ± 1% 2.93k ± 0% -3.83% (p=0.000 n=8+9)
More later, once parsers can reuse strings from previous parses.
Updates #5958
Change-Id: I76cd5048246dd24d11c4e263d8bb8041747fb2b0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
103 lines
2.9 KiB
Go
103 lines
2.9 KiB
Go
// 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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//go:build !ios && !js
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// +build !ios,!js
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package portlist
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import (
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"encoding/json"
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"testing"
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)
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func TestParsePort(t *testing.T) {
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type InOut struct {
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in string
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expect int
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}
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tests := []InOut{
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{"1.2.3.4:5678", 5678},
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{"0.0.0.0.999", 999},
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{"1.2.3.4:*", 0},
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{"5.5.5.5:0", 0},
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{"[1::2]:5", 5},
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{"[1::2].5", 5},
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{"gibberish", -1},
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}
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for _, io := range tests {
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got := parsePort(io.in)
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if got != io.expect {
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t.Fatalf("input:%#v expect:%v got:%v\n", io.in, io.expect, got)
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}
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}
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}
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const netstatOutput = `
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// linux
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tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
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udp 0 0 0.0.0.0:5353 0.0.0.0:*
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udp6 0 0 :::5353 :::*
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udp6 0 0 :::5354 :::*
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// macOS
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tcp4 0 0 *.23 *.* LISTEN
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tcp6 0 0 *.24 *.* LISTEN
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tcp4 0 0 *.8185 *.* LISTEN
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tcp4 0 0 127.0.0.1.8186 *.* LISTEN
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tcp6 0 0 ::1.8187 *.* LISTEN
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tcp4 0 0 127.1.2.3.8188 *.* LISTEN
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udp6 0 0 *.5453 *.*
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udp4 0 0 *.5553 *.*
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// Windows 10
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Proto Local Address Foreign Address State
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TCP 0.0.0.0:32 0.0.0.0:0 LISTENING
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[sshd.exe]
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UDP 0.0.0.0:5050 *:*
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CDPSvc
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[svchost.exe]
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UDP 0.0.0.0:53 *:*
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[chrome.exe]
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UDP 10.0.1.43:9353 *:*
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[iTunes.exe]
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UDP [::]:53 *:*
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UDP [::]:53 *:*
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[funball.exe]
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`
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func TestParsePortsNetstat(t *testing.T) {
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want := List{
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Port{"tcp", 22, "", ""},
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Port{"tcp", 23, "", ""},
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Port{"tcp", 24, "", ""},
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Port{"tcp", 32, "sshd", ""},
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Port{"udp", 53, "chrome", ""},
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Port{"udp", 53, "funball", ""},
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Port{"udp", 5050, "CDPSvc", ""},
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Port{"udp", 5353, "", ""},
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Port{"udp", 5354, "", ""},
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Port{"udp", 5453, "", ""},
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Port{"udp", 5553, "", ""},
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Port{"tcp", 8185, "", ""}, // but not 8186, 8187, 8188 on localhost
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Port{"udp", 9353, "iTunes", ""},
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}
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pl := appendParsePortsNetstat(nil, netstatOutput)
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jgot, _ := json.MarshalIndent(pl, "", "\t")
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jwant, _ := json.MarshalIndent(want, "", "\t")
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if len(pl) != len(want) {
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t.Fatalf("Got:\n%s\n\nWant:\n%s\n", jgot, jwant)
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}
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for i := range pl {
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if pl[i] != want[i] {
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t.Errorf("row#%d\n got: %#v\n\nwant: %#v\n",
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i, pl[i], want[i])
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t.Fatalf("Got:\n%s\n\nWant:\n%s\n", jgot, jwant)
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}
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}
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}
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