ngrok 사용

ngrok이란 로컬 서버를 임의의 url을 통해 인터넷에 노출시켜주는 역할을 한다.
NAT와 방화벽 뒤에 있는 로컬서버를 안전한 터널을 통해 공개 인터넷에 노출 시켜 주는 도구

포트포워딩과 같은 네트워크 환경설정 변경 없이 로컬에 실행중인 서버를 안전하게 외부에서 접근 가능하게 하는 도구

1. 설치

$ npm i -g ngrok

맥에서 사용시 위 명령어가 동작하지 않아, 아래 명령어로 해결.

$ brew cask install ngrok

2. 사용

ngrok http [PORT 번호] 명령을 통해 사용.

$ ngrok http 8080

ngrok by @inconshreveable                                                                                    
                        (Ctrl+C to quit)
  
  Session Status                online
  Session Expires               7 hours, 59 minutes
  Version                       2.2.8
  Region                        United States (us)
  Web Interface                 http://127.0.0.1:4040
  Forwarding                    http://7e78ace7.ngrok.io -> localhost:8080
  Forwarding                    https://7e78ace7.ngrok.io -> localhost:8080
  
  Connections                   ttl     opn     rt1     rt5     p50     p90
                                0       0       0.00    0.00    0.00    0.00

세션 만료는 공식 사이트에서 가입후 진행가능

3. 사용 방법

$ ngrok --help

NAME:
   ngrok - tunnel local ports to public URLs and inspect traffic

DESCRIPTION:
    ngrok exposes local networked services behinds NATs and firewalls to the
    public internet over a secure tunnel. Share local websites, build/test
    webhook consumers and self-host personal services.
    Detailed help for each command is available with 'ngrok help <command>'.
    Open http://localhost:4040 for ngrok's web interface to inspect traffic.

EXAMPLES:
    ngrok http 80                    # secure public URL for port 80 web server
    ngrok http -subdomain=baz 8080   # port 8080 available at baz.ngrok.io
    ngrok http foo.dev:80            # tunnel to host:port instead of localhost
    ngrok tcp 22                     # tunnel arbitrary TCP traffic to port 22
    ngrok tls -hostname=foo.com 443  # TLS traffic for foo.com to port 443
    ngrok start foo bar baz          # start tunnels from the configuration file

VERSION:
   2.2.8

AUTHOR:
  inconshreveable - <alan@ngrok.com>

COMMANDS:
   authtoken	save authtoken to configuration file
   credits	prints author and licensing information
   http		start an HTTP tunnel
   start	start tunnels by name from the configuration file
   tcp		start a TCP tunnel
   tls		start a TLS tunnel
   update	update ngrok to the latest version
   version	print the version string
   help		Shows a list of commands or help for one command