)

const (
	shutdownPollIntervalMax = 500 * time.Millisecond

	// DefaultShutdownTimeout - default shutdown timeout to gracefully shutdown server.
	DefaultShutdownTimeout = 5 * time.Second

	// DefaultIdleTimeout for idle inactive connections
	DefaultIdleTimeout = 30 * time.Second

	// DefaultReadHeaderTimeout for very slow inactive connections
	DefaultReadHeaderTimeout = 30 * time.Second

	// 	if trhttp2 != nil {
	// 		// ReadIdleTimeout is the timeout after which a health check using ping
	// 		// frame will be carried out if no frame is received on the
	// 		// connection. 5 minutes is sufficient time for any idle connection.
	// 		trhttp2.ReadIdleTimeout = 5 * time.Minute
	// 		// PingTimeout is the timeout after which the connection will be closed
	// 		// if a response to Ping is not received.
	// 		trhttp2.PingTimeout = dialTimeout

import (
	"context"
	"math"
)

const (
	sysCPUAvgIdle   = "avg_idle"
	sysCPUAvgIOWait = "avg_iowait"
	sysCPULoad      = "load"
	sysCPULoadPerc  = "load_perc"
	sysCPUNice      = "nice"
	sysCPUSteal     = "steal"
	sysCPUSystem    = "system"
	sysCPUUser      = "user"
)

var (
	sysCPUAvgIdleMD   = NewGaugeMD(sysCPUAvgIdle, "Average CPU idle time")
	sysCPUAvgIOWaitMD = NewGaugeMD(sysCPUAvgIOWait, "Average CPU IOWait time")

type TCPOptions struct {
	UserTimeout int // this value is expected to be in milliseconds
	// When the net.Conn is idle for more than ReadTimeout duration, we close the connection on the client proactively.
	ClientReadTimeout time.Duration
	// When the net.Conn is idle for more than WriteTimeout duration, we close the connection on the client proactively.
	ClientWriteTimeout time.Duration

	"github.com/minio/pkg/v2/env"
)

// Compression environment variables
const (
	Speed    = "speed"
	EnvSpeed = "MINIO_SCANNER_SPEED"

	IdleSpeed    = "idle_speed"
	EnvIdleSpeed = "MINIO_SCANNER_IDLE_SPEED"

	ExcessVersions    = "alert_excess_versions"
	EnvExcessVersions = "MINIO_SCANNER_ALERT_EXCESS_VERSIONS"

	ExcessFolders    = "alert_excess_folders"

			/// Enable keep-alive
			{
				_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_KEEPALIVE, 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.