localtunnel-server

localtunnel exposes your localhost to the world for easy testing and sharing! No need to mess with DNS or deploy just to have others test out your changes.

This repo is the server component. Forked from https://github.com/localtunnel/server to work on a Raspberry PI (Docker platform linux/arm/v7).

If you are just looking for the CLI localtunnel app, see (https://github.com/localtunnel/localtunnel).

Overview

In order to run your own localtunnel server you must ensure that your server can meet the following requirements:

• You can set up DNS entries for your domain.tld and *.domain.tld (or sub.domain.tld and *.sub.domain.tld).
• The server can accept incoming TCP connections for any non-root TCP port (i.e. ports over 1000).

The above are important as the client will ask the server for a subdomain under a particular domain. The server will listen on any OS-assigned TCP port for client connections.

Build Docker image

docker build . -t localtunnel-server

Run Docker container

docker run -d --restart always --name localtunnel-server --net host localtunnel-server --port 3000

The localtunnel server is now running and waiting for client requests on port 3000. You will most likely want to set up a reverse proxy to listen on port 80 (or start localtunnel on port 80 directly) using this nginx Docker image built for this purpose.

NOTE By default, localtunnel will use subdomains for clients, if you plan to host your localtunnel server itself on a subdomain you will need to use the --domain option and specify the domain name behind which you are hosting localtunnel. (i.e. my-localtunnel-server.example.com)

Usage

You can now use your domain with the --host flag for the lt client.

lt --host http://sub.example.tld:1234 --port 9000

You will be assigned a URL similar to heavy-puma-9.sub.example.com:1234.

If your server is acting as a reverse proxy (i.e. nginx) and is able to listen on port 80, then you do not need the :1234 part of the hostname for the lt client.

REST API

POST /api/tunnels

Create a new tunnel. A LocalTunnel client posts to this enpoint to request a new tunnel with a specific name or a randomly assigned name.

GET /api/status

General server information.