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Add TCPKeepAliveIdle in Sockopt option (#1166)

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* Add TCP keep alive idle setting

* Add TCP keep alive idle setting: auto generated

* Add TCP keep alive support in Linux

* Add TCP keep alive support in MacOS, FreeBSD

* Add TCP keep alive support in Windows

* fix bug introduced in adding tcp keep alive adjustment

* embed macOS const to avoid platform inconsistency

* embed macOS const to avoid platform inconsistency(again)

* add TCP Keep Alive support in config

* use sys/unix instead of syscall

Suggestion from:
https://github.com/v2fly/v2ray-core/pull/1395#issuecomment-974761647

* use sys/unix instead of syscall

Suggestion from:
https://github.com/v2fly/v2ray-core/pull/1395#issuecomment-974761647

* Separate TcpKeepAliveIdle and TcpKeepAliveInterval check logic

* Disable tcp keepAlive when TcpKeepAliveIdle < 0 and  TcpKeepAliveInterval <= 0

Co-authored-by: xqzr <34030394+xqzr@users.noreply.github.com>

Co-authored-by: ValdikSS <iam@valdikss.org.ru>
Co-authored-by: Shelikhoo <xiaokangwang@outlook.com>
Co-authored-by: xqzr <34030394+xqzr@users.noreply.github.com>
This commit is contained in:
yuhan6665 2022-07-31 09:55:40 -04:00 committed by GitHub
parent 50b5ea5a54
commit 340234166b
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 182 additions and 36 deletions
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2
infra/conf/transport_internet.go
View file

@ -532,6 +532,7 @@ type SocketConfig struct {
DomainStrategy string `json:"domainStrategy"`
DialerProxy string `json:"dialerProxy"`
TCPKeepAliveInterval int32 `json:"tcpKeepAliveInterval"`
TCPKeepAliveIdle int32 `json:"tcpKeepAliveIdle"`
}
// Build implements Buildable.
@ -579,6 +580,7 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
AcceptProxyProtocol: c.AcceptProxyProtocol,
DialerProxy: c.DialerProxy,
TcpKeepAliveInterval: c.TCPKeepAliveInterval,
TcpKeepAliveIdle: c.TCPKeepAliveIdle,
}, nil
}

57
transport/internet/config.pb.go
View file

@ -1,6 +1,6 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.27.1
// protoc-gen-go v1.28.1
// protoc v3.18.0
// source: transport/internet/config.proto
@ -423,6 +423,7 @@ type SocketConfig struct {
DomainStrategy DomainStrategy `protobuf:"varint,8,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.transport.internet.DomainStrategy" json:"domain_strategy,omitempty"`
DialerProxy string `protobuf:"bytes,9,opt,name=dialer_proxy,json=dialerProxy,proto3" json:"dialer_proxy,omitempty"`
TcpKeepAliveInterval int32 `protobuf:"varint,10,opt,name=tcp_keep_alive_interval,json=tcpKeepAliveInterval,proto3" json:"tcp_keep_alive_interval,omitempty"`
TcpKeepAliveIdle int32 `protobuf:"varint,11,opt,name=tcp_keep_alive_idle,json=tcpKeepAliveIdle,proto3" json:"tcp_keep_alive_idle,omitempty"`
}
func (x *SocketConfig) Reset() {
@ -527,6 +528,13 @@ func (x *SocketConfig) GetTcpKeepAliveInterval() int32 {
return 0
}
func (x *SocketConfig) GetTcpKeepAliveIdle() int32 {
if x != nil {
return x.TcpKeepAliveIdle
}
return 0
}
var File_transport_internet_config_proto protoreflect.FileDescriptor
var file_transport_internet_config_proto_rawDesc = []byte{
@ -579,7 +587,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
0x12, 0x30, 0x0a, 0x13, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x4c, 0x61, 0x79,
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@ -609,27 +617,30 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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}
var (

2
transport/internet/config.proto
View file

@ -94,4 +94,6 @@ message SocketConfig {
string dialer_proxy = 9;
int32 tcp_keep_alive_interval = 10;
int32 tcp_keep_alive_idle = 11;
}

51
transport/internet/sockopt_darwin.go
View file

@ -1,16 +1,16 @@
package internet
import (
"syscall"
"golang.org/x/sys/unix"
)
const (
// TCP_FASTOPEN is the socket option on darwin for TCP fast open.
TCP_FASTOPEN = 0x105
// TCP_FASTOPEN_SERVER is the value to enable TCP fast open on darwin for server connections.
TCP_FASTOPEN_SERVER = 0x01
// TCP_FASTOPEN_CLIENT is the value to enable TCP fast open on darwin for client connections.
TCP_FASTOPEN_CLIENT = 0x02
TCP_FASTOPEN_CLIENT = 0x02 // nolint: revive,stylecheck
// syscall.TCP_KEEPINTVL is missing on some darwin architectures.
sysTCP_KEEPINTVL = 0x101 // nolint: revive,stylecheck
)
func applyOutboundSocketOptions(network string, address string, fd uintptr, config *SocketConfig) error {
@ -20,10 +20,30 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
tfo = TCP_FASTOPEN_CLIENT
}
if tfo >= 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, TCP_FASTOPEN, tfo); err != nil {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_FASTOPEN, tfo); err != nil {
return err
}
}
if config.TcpKeepAliveIdle > 0 || config.TcpKeepAliveInterval > 0 {
if config.TcpKeepAliveIdle > 0 {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_KEEPALIVE, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if config.TcpKeepAliveInterval > 0 {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, sysTCP_KEEPINTVL, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
return nil
@ -36,10 +56,29 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
tfo = TCP_FASTOPEN_SERVER
}
if tfo >= 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, TCP_FASTOPEN, tfo); err != nil {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_FASTOPEN, tfo); err != nil {
return err
}
}
if config.TcpKeepAliveIdle > 0 || config.TcpKeepAliveInterval > 0 {
if config.TcpKeepAliveIdle > 0 {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, unix.TCP_KEEPALIVE, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if config.TcpKeepAliveInterval > 0 {
if err := unix.SetsockoptInt(int(fd), unix.IPPROTO_TCP, sysTCP_KEEPINTVL, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
return nil

38
transport/internet/sockopt_freebsd.go
View file

@ -140,6 +140,25 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
return newError("failed to set TCP_FASTOPEN_CONNECT=", tfo).Base(err)
}
}
if config.TcpKeepAliveIdle > 0 || config.TcpKeepAliveInterval > 0 {
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if config.TcpKeepAliveInterval > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
if config.Tproxy.IsEnabled() {
@ -170,6 +189,25 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
return newError("failed to set TCP_FASTOPEN=", tfo).Base(err)
}
}
if config.TcpKeepAliveIdle > 0 || config.TcpKeepAliveInterval > 0 {
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if config.TcpKeepAliveInterval > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
if config.Tproxy.IsEnabled() {

40
transport/internet/sockopt_linux.go
View file

@ -58,9 +58,23 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
}
}
if config.TcpKeepAliveInterval != 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
if config.TcpKeepAliveInterval > 0 || config.TcpKeepAliveIdle > 0 {
if config.TcpKeepAliveInterval > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
@ -88,9 +102,23 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
}
}
if config.TcpKeepAliveInterval != 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
if config.TcpKeepAliveInterval > 0 || config.TcpKeepAliveIdle > 0 {
if config.TcpKeepAliveInterval > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(config.TcpKeepAliveInterval)); err != nil {
return newError("failed to set TCP_KEEPINTVL", err)
}
}
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(config.TcpKeepAliveIdle)); err != nil {
return newError("failed to set TCP_KEEPIDLE", err)
}
}
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveInterval < 0 || config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}

18
transport/internet/sockopt_windows.go
View file

@ -25,6 +25,15 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
if err := setTFO(syscall.Handle(fd), config.ParseTFOValue()); err != nil {
return err
}
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
return nil
@ -35,6 +44,15 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
if err := setTFO(syscall.Handle(fd), config.ParseTFOValue()); err != nil {
return err
}
if config.TcpKeepAliveIdle > 0 {
if err := syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 1); err != nil {
return newError("failed to set SO_KEEPALIVE", err)
}
} else if config.TcpKeepAliveIdle < 0 {
if err := syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, 0); err != nil {
return newError("failed to unset SO_KEEPALIVE", err)
}
}
}
return nil

6
transport/internet/system_dialer.go
View file

@ -69,10 +69,14 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne
Dest: destAddr,
}, nil
}
goStdKeepAlive := time.Duration(0)
if sockopt != nil && sockopt.TcpKeepAliveIdle != 0 {
goStdKeepAlive = time.Duration(-1)
}
dialer := &net.Dialer{
Timeout: time.Second * 16,
LocalAddr: resolveSrcAddr(dest.Network, src),
KeepAlive: goStdKeepAlive,
}
if sockopt != nil || len(d.controllers) > 0 {

4
transport/internet/system_listener.go
View file

@ -7,6 +7,7 @@ import (
"strconv"
"strings"
"syscall"
"time"
"github.com/pires/go-proxyproto"
"github.com/xtls/xray-core/common/net"
@ -50,6 +51,9 @@ func (dl *DefaultListener) Listen(ctx context.Context, addr net.Addr, sockopt *S
network = addr.Network()
address = addr.String()
lc.Control = getControlFunc(ctx, sockopt, dl.controllers)
if sockopt != nil && sockopt.TcpKeepAliveIdle != 0 {
lc.KeepAlive = time.Duration(-1)
}
case *net.UnixAddr:
lc.Control = nil
network = addr.Network()