You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ipsec.go
    path of file: ./repos/nff-go/examples/ipsec/perf
    
    the code of the file until where you have to start completion: // Copyright 2019 Intel Corporation.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import "github.com/intel-go/nff-go/examples/ipsec"
import "github.com/intel-go/nff-go/flow"
import "flag"

func main() {
	outport := flag.Uint("outport", 1, "port for sender")
	inport := flag.Uint("inport", 0, "port for receiver")
	noscheduler := flag.Bool("no-scheduler", false, "disable scheduler")
	dpdkLogLevel := flag.String("dpdk", "--log-level=0", "Passes an arbitrary argument to dpdk EAL")
	cores 
    
func main() {
	outport := flag.Uint("outport", 1, "port for sender")
	inport := flag.Uint("inport", 0, "port for receiver")
	noscheduler := flag.Bool("no-scheduler", false, "disable scheduler")
	dpdkLogLevel := flag.String("dpdk", "--log-level=0", "Passes an arbitrary argument to dpdk EAL")
	cores := flag.String("cores", "0-10", "Cores mask. Avoid hyperthreading here")
	vector := flag.Bool("v", false, "vector version")
	dec := flag.Bool("d", false, "decapsulate after encapsulation")

	flag.Parse()

	config := flow.Config{
		DisableScheduler: *noscheduler,
		DPDKArgs:         []string{*dpdkLogLevel},
		CPUList:          *cores,
	}
	flow.SystemInit(&config)
	input, _ := flow.SetReceiver(uint16(*inport))
	if *vector {
		flow.SetVectorHandlerDrop(input, ipsec.VectorEncapsulation, ipsec.VContext{})
	} else {
		flow.SetHandlerDrop(input, ipsec.ScalarEncapsulation, ipsec.SContext{})
	}
	if *dec {
		flow.SetHandlerDrop(input, ipsec.Decapsulation, ipsec.SContext{})
	}
	flow.SetSender(input, uint16(*outport))
	flow.SystemStart()
}