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control_unix.go
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control_unix.go
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// +build linux,!windows,!wasm,!js,!darwin
//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Package tcp provides tcp option
package tcp
import (
"syscall"
"github.com/vdaas/vald/internal/errors"
"golang.org/x/sys/unix"
)
const TCP_FASTOPEN int = 0x17
func Control(network, address string, c syscall.RawConn) (err error) {
return c.Control(func(fd uintptr) {
f := int(fd)
ierr := syscall.SetsockoptInt(f, syscall.SOL_SOCKET, unix.SO_REUSEPORT, 1)
if ierr != nil {
err = errors.Wrap(err, ierr.Error())
}
ierr = syscall.SetsockoptInt(f, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
if ierr != nil {
err = errors.Wrap(err, ierr.Error())
}
ierr = syscall.SetsockoptInt(f, syscall.IPPROTO_TCP, TCP_FASTOPEN, 1)
if ierr != nil {
err = errors.Wrap(err, ierr.Error())
}
ierr = syscall.SetsockoptInt(f, syscall.IPPROTO_TCP, syscall.TCP_NODELAY, 1)
if ierr != nil {
err = errors.Wrap(err, ierr.Error())
}
ierr = syscall.SetsockoptInt(f, syscall.IPPROTO_TCP, syscall.TCP_DEFER_ACCEPT, 1)
if ierr != nil {
err = errors.Wrap(err, ierr.Error())
}
})
}