internodeRecvBytesTotalMD = NewCounterMD(internodeRecvBytesTotal,
		"Total number of bytes received from other peer nodes")
)

// loadNetworkInternodeMetrics - reads internode network metrics.
//
// This is a `MetricsLoaderFn`.
func loadNetworkInternodeMetrics(ctx context.Context, m MetricValues, _ *metricsCache) error {
	connStats := globalConnStats.toServerConnStats()
	rpcStats := rest.GetRPCStats()

		return cniConfig, nil
	}

	if len(template.cniNetworkConfig) > 0 {
		installLog.Infof("Using CNI config template from CNI_NETWORK_CONFIG environment variable.")
		return []byte(template.cniNetworkConfig), nil
	}

	return nil, fmt.Errorf("need CNI_NETWORK_CONFIG or CNI_NETWORK_CONFIG_FILE to be set")
}

func replaceCNIConfigVars(cniConfig []byte, vars cniConfigVars) []byte {
	cniConfigStr := string(cniConfig)

			}
			_, present := network[nodeName]
			if !present {
				if err := isServerResolvable(endpoint, 5*time.Second); err == nil {
					network[nodeName] = string(madmin.ItemOnline)
				} else {
					network[nodeName] = string(madmin.ItemOffline)
					// log once the error
					peersLogOnceIf(context.Background(), err, nodeName)
				}
			}
		}
	}

	var memstats runtime.MemStats
	runtime.ReadMemStats(&memstats)

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)

	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strings"
	"sync"
	"time"

	"istio.io/istio/cni/pkg/constants"
	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/network"
	"istio.io/istio/pkg/uds"
)

var pluginLog = log.RegisterScope("cni", "CNI network plugin")

type UDSLogger struct {
	mu            sync.Mutex
	loggingServer *http.Server
}

type cniLog struct {
	Level string    `json:"level"`

//
//nolint:unused
func setTCPParametersFn(opts TCPOptions) func(network, address string, c syscall.RawConn) error {
	return func(network, address string, c syscall.RawConn) error {
		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)

	delta := globalSiteNetPerfRX.firstToDisconnect.Sub(globalSiteNetPerfRX.lastToConnect)
	// If the first disconnected before the last connected, we likely had a network issue.
	if delta <= 0 {
		rx = 0
		errStr = "detected network disconnections, possibly an unstable network"
	}

	globalSiteNetPerfRX.Reset()
	return madmin.SiteNetPerfNodeResult{
		Endpoint:        "",
		TX:              r.n,
		TXTotalDuration: duration,

	rbachttp "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/http/rbac/v3"
	hcm "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/http_connection_manager/v3"
	rbactcp "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/rbac/v3"
	"google.golang.org/protobuf/proto"

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/wellknown"
)

const (

	case strings.Contains(err.Error(), "server closed idle connection"):
		return true
	}

	return false
}

// Converts network error to storageErr. This function is
// written so that the storageAPI errors are consistent
// across network disks.
func toStorageErr(err error) error {
	if err == nil {
		return nil
	}

	if isNetworkError(err) {
		return errDiskNotFound
	}

	MountedCNINetDir     = "mounted-cni-net-dir"
	CNINetDir            = "cni-net-dir"
	CNIConfName          = "cni-conf-name"
	ChainedCNIPlugin     = "chained-cni-plugin"
	CNINetworkConfigFile = "cni-network-config-file"
	CNINetworkConfig     = "cni-network-config"
	LogLevel             = "log-level"
	KubeconfigFilename   = "kubecfg-file-name"
	KubeconfigMode       = "kubeconfig-mode"
	KubeCAFile           = "kube-ca-file"