frostfs-s3-gw/cmd/http/dial_linux.go

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// +build linux
/*
* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
*
* 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
*
* http://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 http
import (
"context"
"net"
"syscall"
"time"
)
const (
// TCPFastOpenConnect sets the underlying socket to use
// the TCP fast open connect. This feature is supported
// since Linux 4.11.
TCPFastOpenConnect = 30
)
// DialContext is a function to make custom Dial for internode communications
type DialContext func(ctx context.Context, network, address string) (net.Conn, error)
// NewCustomDialContext setups a custom dialer for internode communications
func NewCustomDialContext(dialTimeout, dialKeepAlive time.Duration) DialContext {
return func(ctx context.Context, network, addr string) (net.Conn, error) {
dialer := &net.Dialer{
Timeout: dialTimeout,
KeepAlive: dialKeepAlive,
Control: func(network, address string, c syscall.RawConn) error {
return c.Control(func(fd uintptr) {
// Enable TCP fast connect
_ = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, TCPFastOpenConnect, 1)
})
},
}
return dialer.DialContext(ctx, network, addr)
}
}