Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** 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, version 3.

**

** 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 <https://www.gnu.org/licenses/>.

**/

​

package udp

​

import (

    "bytes"

    "errors"

    "math"

    "net"

    "strconv"

    "time"

​

    "golang.zabbix.com/sdk/errs"

    "golang.zabbix.com/sdk/log"

    "golang.zabbix.com/sdk/plugin"

)

​

const (

    errorInvalidFirstParam  = "Invalid first parameter."

    errorInvalidSecondParam = "Invalid second parameter."

    errorInvalidThirdParam  = "Invalid third parameter."

    errorInvalidFourthParam = "Invalid fourth parameter."

    errorInvalidFifthParam  = "Invalid fifth parameter."

    errorTooManyParams      = "Too many parameters."

    errorUnsupportedMetric  = "Unsupported metric."

)

​

const (

    ntpVersion          = 3

    ntpModeServer       = 4

    ntpTransmitRspStart = 24

    ntpTransmitRspEnd   = 32

    ntpTransmitReqStart = 40

    ntpPacketSize       = 48

    ntpEpochOffset      = 2208988800.0

    ntpScale            = 4294967296.0

)

​

var impl Plugin

​

// Plugin -

type Plugin struct {

    plugin.Base

}

​

func init() {

    err := plugin.RegisterMetrics(

        &impl, "UDP",

        "net.udp.service", "Checks if service is running and responding to UDP requests.",

        "net.udp.service.perf", "Checks performance of UDP service.",

        "net.udp.socket.count", "Returns number of TCP sockets that match parameters.",