From c3322294be71ab2433b44f69d7f30db5001c510c Mon Sep 17 00:00:00 2001
From: xqzr <34030394+xqzr@users.noreply.github.com>
Date: Thu, 9 Mar 2023 21:51:16 +0800
Subject: [PATCH] Add `tcpWindowClamp` to `sockopt` (#1757)
Co-authored-by: RPRX <63339210+RPRX@users.noreply.github.com>
---
infra/conf/transport_internet.go | 2 ++
transport/internet/config.pb.go | 54 +++++++++++++++++------------
transport/internet/config.proto | 2 ++
transport/internet/sockopt_linux.go | 14 +++++++-
4 files changed, 49 insertions(+), 23 deletions(-)
diff --git a/infra/conf/transport_internet.go b/infra/conf/transport_internet.go
index c46bd964..63c8fbed 100644
--- a/infra/conf/transport_internet.go
+++ b/infra/conf/transport_internet.go
@@ -616,6 +616,7 @@ type SocketConfig struct {
TCPKeepAliveInterval int32 `json:"tcpKeepAliveInterval"`
TCPKeepAliveIdle int32 `json:"tcpKeepAliveIdle"`
TCPCongestion string `json:"tcpCongestion"`
+ TCPWindowClamp int32 `json:"tcpWindowClamp"`
V6only bool `json:"v6only"`
Interface string `json:"interface"`
}
@@ -667,6 +668,7 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
TcpKeepAliveInterval: c.TCPKeepAliveInterval,
TcpKeepAliveIdle: c.TCPKeepAliveIdle,
TcpCongestion: c.TCPCongestion,
+ TcpWindowClamp: c.TCPWindowClamp,
V6Only: c.V6only,
Interface: c.Interface,
}, nil
diff --git a/transport/internet/config.pb.go b/transport/internet/config.pb.go
index 1fd38539..90dcd786 100644
--- a/transport/internet/config.pb.go
+++ b/transport/internet/config.pb.go
@@ -427,6 +427,7 @@ type SocketConfig struct {
TcpCongestion string `protobuf:"bytes,12,opt,name=tcp_congestion,json=tcpCongestion,proto3" json:"tcp_congestion,omitempty"`
Interface string `protobuf:"bytes,13,opt,name=interface,proto3" json:"interface,omitempty"`
V6Only bool `protobuf:"varint,14,opt,name=v6only,proto3" json:"v6only,omitempty"`
+ TcpWindowClamp int32 `protobuf:"varint,15,opt,name=tcp_window_clamp,json=tcpWindowClamp,proto3" json:"tcp_window_clamp,omitempty"`
}
func (x *SocketConfig) Reset() {
@@ -559,6 +560,13 @@ func (x *SocketConfig) GetV6Only() bool {
return false
}
+func (x *SocketConfig) GetTcpWindowClamp() int32 {
+ if x != nil {
+ return x.TcpWindowClamp
+ }
+ return 0
+}
+
var File_transport_internet_config_proto protoreflect.FileDescriptor
var file_transport_internet_config_proto_rawDesc = []byte{
@@ -611,7 +619,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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@@ -650,27 +658,29 @@ var file_transport_internet_config_proto_rawDesc = []byte{
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}
var (
diff --git a/transport/internet/config.proto b/transport/internet/config.proto
index 23a964fd..574d698e 100644
--- a/transport/internet/config.proto
+++ b/transport/internet/config.proto
@@ -102,4 +102,6 @@ message SocketConfig {
string interface = 13;
bool v6only = 14;
+
+ int32 tcp_window_clamp = 15;
}
diff --git a/transport/internet/sockopt_linux.go b/transport/internet/sockopt_linux.go
index e8376025..eda5de15 100644
--- a/transport/internet/sockopt_linux.go
+++ b/transport/internet/sockopt_linux.go
@@ -46,7 +46,7 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
return newError("failed to set SO_MARK").Base(err)
}
}
-
+
if config.Interface != "" {
if err := syscall.BindToDevice(int(fd), config.Interface); err != nil {
return newError("failed to set Interface").Base(err)
@@ -89,6 +89,12 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
return newError("failed to set TCP_CONGESTION", err)
}
}
+
+ if config.TcpWindowClamp > 0 {
+ if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_WINDOW_CLAMP, int(config.TcpWindowClamp)); err != nil {
+ return newError("failed to set TCP_WINDOW_CLAMP", err)
+ }
+ }
}
if config.Tproxy.IsEnabled() {
@@ -139,6 +145,12 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
return newError("failed to set TCP_CONGESTION", err)
}
}
+
+ if config.TcpWindowClamp > 0 {
+ if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_WINDOW_CLAMP, int(config.TcpWindowClamp)); err != nil {
+ return newError("failed to set TCP_WINDOW_CLAMP", err)
+ }
+ }
}
if config.Tproxy.IsEnabled() {