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A simple tool that allows your locally running HTTP(s) servers to have a public URL, serving as an easy-to-self-host alternative to services like `ngrok`

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Warp

Warp is a simple tool that allows your locally running HTTP(s) servers to have a public URL, serving as an easy-to-self-host alternative to services like ngrok. Warp is implemented in Deno with the goal of providing flexibility and minimal dependencies.

The project has two main components:

  • Server: Deployable on a server, it connects to the outside world and is accessible from any domain.
  • Client: Runs locally to connect a given HTTP endpoint running on a local or non-public network.
image

Server

The Warp server opens a single HTTP port to which the Warp client connects and upgrades to a WebSocket connection. Each request to this HTTP port is forwarded (based on the client's HOST header) to the corresponding connected Warp client connection, which then serves the request.

Usage

To start the Warp server, import the serve function from the Warp package and call it with the appropriate configuration.

Example

import { serve } from "jsr:@deco/warp";

const port = 8080; // The port where the Warp server will listen
const apiKeys = ["YOUR_API_KEY1", "YOUR_API_KEY2"]; // Array of API keys for authentication

serve({ port, apiKeys });

Parameters

  • port: The port number where the Warp server will listen for connections.
  • apiKeys: An array of API keys used for client authentication.

Client

The Warp client connects to the Warp server. Upon connection, the client shares the given API key and the domain it wants to receive requests for.

Usage

To connect a client to the Warp server, import the connect function from the Warp package and call it with the appropriate configuration.

Example

import { connect } from "jsr:@deco/warp";

const port = 3000; // The local port you want to expose
const domain = "www.your.domain.com"; // The domain name for your service
const server = "wss://YOUR_SERVER"; // The WebSocket URL of your Warp server
const apiKey = "YOUR_API_KEY"; // The apiKey

const { registered, closed } = await connect({
  domain,
  localAddr: `http://localhost:${port}`,
  server,
  apiKey,
});

await registered;
console.log("Client registered successfully");

closed.then(() => {
  console.log("Connection closed");
});

Parameters

  • domain: The domain name that will be used to access your localhost service.
  • localAddr: The local address of the service you want to expose (e.g., http://localhost:3000).
  • server: The WebSocket URL of your Warp server (e.g., wss://YOUR_SERVER).
  • apiKey: The apiKey for connecting to the Warp server.

Return Values

  • registered: A promise that resolves when the client has successfully registered with the server.
  • closed: A promise that resolves when the connection to the server is closed.

Example Workflow

Here’s a complete example of setting up a Warp server and client:

Server

import { serve } from "jsr:@deco/warp";

const port = 8080;
const apiKeys = ["YOUR_API_KEY1", "YOUR_API_KEY2"];

serve({ port, apiKeys });

Client

import { connect } from "jsr:@deco/warp";

const port = 3000;
const domain = "www.your.domain.com";
const server = "wss://YOUR_SERVER";
const apiKey = "API_KEY";

(async () => {
  const { registered, closed } = await connect({
    domain,
    localAddr: `http://localhost:${port}`,
    server,
    apiKey,
  });

  await registered;
  console.log("Client registered successfully");

  closed.then(() => {
    console.log("Connection closed");
  });
})();

Troubleshooting

Common Issues

  • Invalid API Key: Ensure that the API key you are using is listed in the apiKeys array on the server.
  • Connection Refused: Check that the server is running and accessible at the specified WebSocket URL.
  • Domain Not Accessible: Ensure that the domain name is correctly configured and pointing to the Warp server.

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A simple tool that allows your locally running HTTP(s) servers to have a public URL, serving as an easy-to-self-host alternative to services like `ngrok`

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