mirror of
https://github.com/minio/minio.git
synced 2024-12-30 09:03:22 -05:00
114 lines
4.4 KiB
Go
114 lines
4.4 KiB
Go
//go:build linux
|
|
// +build linux
|
|
|
|
// Copyright (c) 2015-2023 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package http
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
"syscall"
|
|
"time"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func setTCPParametersFn(opts TCPOptions) func(network, address string, c syscall.RawConn) error {
|
|
return func(network, address string, c syscall.RawConn) error {
|
|
c.Control(func(fdPtr uintptr) {
|
|
// got socket file descriptor to set parameters.
|
|
fd := int(fdPtr)
|
|
|
|
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
|
|
|
|
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
|
|
|
|
// Enable TCP open
|
|
// https://lwn.net/Articles/508865/ - 16k queue size.
|
|
_ = syscall.SetsockoptInt(fd, syscall.SOL_TCP, unix.TCP_FASTOPEN, 16*1024)
|
|
|
|
// Enable TCP fast connect
|
|
// TCPFastOpenConnect sets the underlying socket to use
|
|
// the TCP fast open connect. This feature is supported
|
|
// since Linux 4.11.
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_FASTOPEN_CONNECT, 1)
|
|
|
|
// Enable TCP quick ACK, John Nagle says
|
|
// "Set TCP_QUICKACK. If you find a case where that makes things worse, let me know."
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_QUICKACK, 1)
|
|
|
|
// The time (in seconds) the connection needs to remain idle before
|
|
// TCP starts sending keepalive probes
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, 15)
|
|
|
|
// Number of probes.
|
|
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_probes (defaults to 9, we reduce it to 5)
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPCNT, 5)
|
|
|
|
// Wait time after successful probe in seconds.
|
|
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_intvl (defaults to 75 secs, we reduce it to 15 secs)
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, 15)
|
|
|
|
// Set tcp user timeout in addition to the keep-alive - tcp-keepalive is not enough to close a socket
|
|
// with dead end because tcp-keepalive is not fired when there is data in the socket buffer.
|
|
// https://blog.cloudflare.com/when-tcp-sockets-refuse-to-die/
|
|
// This is a sensitive configuration, it is better to set it to high values, > 60 secs since it can
|
|
// affect clients reading data with a very slow pace (disappropriate with socket buffer sizes)
|
|
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, opts.UserTimeout)
|
|
|
|
if opts.Interface != "" {
|
|
if h, _, err := net.SplitHostPort(address); err == nil {
|
|
address = h
|
|
}
|
|
// Create socket on specific vrf device.
|
|
// To catch all kinds of special cases this filters specifically for loopback networks.
|
|
if ip := net.ParseIP(address); ip != nil && !ip.IsLoopback() {
|
|
_ = syscall.SetsockoptString(fd, syscall.SOL_SOCKET, syscall.SO_BINDTODEVICE, opts.Interface)
|
|
}
|
|
}
|
|
})
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// DialContext is a function to make custom Dial for internode communications
|
|
type DialContext func(ctx context.Context, network, address string) (net.Conn, error)
|
|
|
|
// NewInternodeDialContext setups a custom dialer for internode communication
|
|
func NewInternodeDialContext(dialTimeout time.Duration, opts TCPOptions) DialContext {
|
|
return func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
dialer := &net.Dialer{
|
|
Timeout: dialTimeout,
|
|
Control: setTCPParametersFn(opts),
|
|
}
|
|
return dialer.DialContext(ctx, network, addr)
|
|
}
|
|
}
|
|
|
|
// NewCustomDialContext setups a custom dialer for any external communication and proxies.
|
|
func NewCustomDialContext(dialTimeout time.Duration, opts TCPOptions) DialContext {
|
|
return func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
dialer := &net.Dialer{
|
|
Timeout: dialTimeout,
|
|
Control: setTCPParametersFn(opts),
|
|
}
|
|
return dialer.DialContext(ctx, network, addr)
|
|
}
|
|
}
|