mirror of https://go.googlesource.com/go
121 lines
4.0 KiB
Go
121 lines
4.0 KiB
Go
// Copyright 2024 The Go 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 illumos
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package net
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import (
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"syscall"
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"testing"
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"time"
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)
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func getCurrentKeepAliveSettings(fd fdType) (cfg KeepAliveConfig, err error) {
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tcpKeepAlive, err := syscall.GetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE)
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if err != nil {
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return
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}
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tcpKeepAliveIdle, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPIDLE)
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if err != nil {
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return
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}
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tcpKeepAliveInterval, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPINTVL)
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if err != nil {
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return
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}
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tcpKeepAliveCount, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPCNT)
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if err != nil {
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return
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}
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cfg = KeepAliveConfig{
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Enable: tcpKeepAlive != 0,
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Idle: time.Duration(tcpKeepAliveIdle) * time.Second,
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Interval: time.Duration(tcpKeepAliveInterval) * time.Second,
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Count: tcpKeepAliveCount,
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}
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return
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}
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func verifyKeepAliveSettings(t *testing.T, fd fdType, oldCfg, cfg KeepAliveConfig) {
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const defaultTcpKeepAliveAbortThreshold = 8 * time.Minute // default value on illumos
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if cfg.Idle == 0 {
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cfg.Idle = defaultTCPKeepAliveIdle
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}
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if cfg.Interval == 0 {
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cfg.Interval = defaultTCPKeepAliveInterval
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}
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if cfg.Count == 0 {
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cfg.Count = defaultTCPKeepAliveCount
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}
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if cfg.Idle == -1 {
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cfg.Idle = oldCfg.Idle
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}
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// Check out the comment on KeepAliveConfig and the illumos code:
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// https://github.com/illumos/illumos-gate/blob/0886dcadf4b2cd677c3b944167f0d16ccb243616/usr/src/uts/common/inet/tcp/tcp_opt_data.c#L786-L861
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tcpKeepAliveAbortThreshold := defaultTcpKeepAliveAbortThreshold
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switch {
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case cfg.Interval == -1 && cfg.Count == -1:
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cfg.Interval = oldCfg.Interval
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cfg.Count = oldCfg.Count
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case cfg.Interval == -1 && cfg.Count > 0:
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cfg.Interval = defaultTcpKeepAliveAbortThreshold / time.Duration(cfg.Count)
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case cfg.Count == -1 && cfg.Interval > 0:
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cfg.Count = int(defaultTcpKeepAliveAbortThreshold / cfg.Interval)
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case cfg.Interval > 0 && cfg.Count > 0:
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// TCP_KEEPALIVE_ABORT_THRESHOLD will be recalculated only when both TCP_KEEPINTVL
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// and TCP_KEEPCNT are set, otherwise it will remain the default value.
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tcpKeepAliveAbortThreshold = cfg.Interval * time.Duration(cfg.Count)
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}
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tcpKeepAlive, err := syscall.GetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE)
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if err != nil {
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t.Fatal(err)
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}
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if (tcpKeepAlive != 0) != cfg.Enable {
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t.Fatalf("SO_KEEPALIVE: got %t; want %t", tcpKeepAlive != 0, cfg.Enable)
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}
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tcpKeepAliveIdle, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPIDLE)
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if err != nil {
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t.Fatal(err)
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}
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if time.Duration(tcpKeepAliveIdle)*time.Second != cfg.Idle {
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t.Fatalf("TCP_KEEPIDLE: got %ds; want %v", tcpKeepAliveIdle, cfg.Idle)
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}
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tcpKeepAliveThreshold, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE_THRESHOLD)
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if err != nil {
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t.Fatal(err)
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}
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if time.Duration(tcpKeepAliveThreshold)*time.Millisecond != cfg.Idle {
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t.Fatalf("TCP_KEEPALIVE_THRESHOLD: got %dms; want %v", tcpKeepAliveThreshold, cfg.Idle)
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}
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tcpKeepAliveInterval, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPINTVL)
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if err != nil {
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t.Fatal(err)
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}
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if time.Duration(tcpKeepAliveInterval)*time.Second != cfg.Interval {
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t.Fatalf("TCP_KEEPINTVL: got %ds; want %v", tcpKeepAliveInterval, cfg.Interval)
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}
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tcpKeepAliveCount, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall_TCP_KEEPCNT)
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if err != nil {
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t.Fatal(err)
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}
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if tcpKeepAliveCount != cfg.Count {
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t.Fatalf("TCP_KEEPCNT: got %d; want %d", tcpKeepAliveCount, cfg.Count)
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}
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tcpKeepAliveAbortInterval, err := syscall.GetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE_ABORT_THRESHOLD)
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if err != nil {
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t.Fatal(err)
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}
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if time.Duration(tcpKeepAliveAbortInterval)*time.Millisecond != tcpKeepAliveAbortThreshold {
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t.Fatalf("TCP_KEEPALIVE_ABORT_THRESHOLD: got %dms; want %v", tcpKeepAliveAbortInterval, tcpKeepAliveAbortThreshold)
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}
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}
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