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3d5750f31c
additionally optimize for IP only setups, avoid doing unnecessary lookups if the Dial addr is an IP. allow support for multiple listeners on same socket, this is mainly meant for future purposes.
83 lines
2.7 KiB
Go
83 lines
2.7 KiB
Go
//go:build linux
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// +build linux
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// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package http
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import (
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"context"
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"net"
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"syscall"
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"time"
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"golang.org/x/sys/unix"
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)
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func setTCPParameters(network, address string, c syscall.RawConn) error {
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c.Control(func(fdPtr uintptr) {
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// got socket file descriptor to set parameters.
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fd := int(fdPtr)
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_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
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_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
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// Enable TCP open
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// https://lwn.net/Articles/508865/ - 16k queue size.
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_ = syscall.SetsockoptInt(fd, syscall.SOL_TCP, unix.TCP_FASTOPEN, 16*1024)
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// Enable TCP fast connect
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// TCPFastOpenConnect sets the underlying socket to use
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// the TCP fast open connect. This feature is supported
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// since Linux 4.11.
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_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_FASTOPEN_CONNECT, 1)
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// Enable TCP quick ACK, John Nagle says
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// "Set TCP_QUICKACK. If you find a case where that makes things worse, let me know."
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_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_QUICKACK, 1)
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})
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return nil
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}
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// DialContext is a function to make custom Dial for internode communications
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type DialContext func(ctx context.Context, network, address string) (net.Conn, error)
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// NewInternodeDialContext setups a custom dialer for internode communication
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func NewInternodeDialContext(dialTimeout time.Duration) DialContext {
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return func(ctx context.Context, network, addr string) (net.Conn, error) {
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dialer := &net.Dialer{
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Timeout: dialTimeout,
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Control: setTCPParameters,
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}
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return dialer.DialContext(ctx, network, addr)
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}
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}
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// NewCustomDialContext setups a custom dialer for any external communication and proxies.
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func NewCustomDialContext(dialTimeout time.Duration) DialContext {
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return func(ctx context.Context, network, addr string) (net.Conn, error) {
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dialer := &net.Dialer{
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Timeout: dialTimeout,
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Control: setTCPParameters,
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}
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return dialer.DialContext(ctx, network, addr)
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}
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}
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