change EndPort type to *int32 #79

	name: build
	on: [push, pull_request]
	jobs:

	build:
	name: Build and test
	runs-on: ubuntu-latest
	if: >
	(( github.event.pull_request.head.repo.owner.login != github.event.pull_request.base.repo.owner.login ) &&
	github.event_name == 'pull_request' ) \|\| (github.event_name == 'push' && github.event.commits != '[]' )
	env:
	GO111MODULE: on
	TARGET: amd64
	steps:
	- name: Set up Go 1.17
	uses: actions/setup-go@v1
	with:
	go-version: 1.17
	id: go

	- name: Check out code into the Go module directory
	uses: actions/checkout@v2

	- name: install goberalls
	run: go get github.com/mattn/goveralls

	- name: install golint
	run: go get -u golang.org/x/lint/golint

	- name: golint
	run: golint ./... \| grep -v vendor \| grep -v ALL_CAPS \| xargs -r false

	- name: gofmt
	run: go fmt ./...

	- name: go vet
	run: go vet ./...

	- name: go test
	run: go test ./...

	- name: Build
	run: GOARCH="${TARGET}" go build ./cmd/example

	# TBD:
	# - name: Go test
	# run: sudo ./test.sh
	#
	# - name: goveralls
	# uses: shogo82148/actions-goveralls@v1
	# with:
	# path-to-profile: coverage.out

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