fibridge-proxy-rs

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fibridge-proxy-rs

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Proxy for turning web browsers into web servers. Load a 100GB file in your browser and stream it over the public web with HTTP byte range requests.

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// repository documentation

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Rationale and introduction available in the
[blog post](http://iobio.io/2019/06/12/introducing-fibridge/).

The point of this is to allow your browser to "host" files which can be
streamed over HTTP. This requires a proxy server to handle the HTTP requests
and forward them to the browser over websockets.

Why would this be useful? If the user has a very large file (genomic data files
can easily be in the 20GB-200GB range), and you want to make
[ranged requests](https://developer.mozilla.org/en-US/docs/Web/HTTP/Range_requests)
to that file (ie only download specific chunks) as though it were hosted on a
normal server, this will allow that. In [iobio](http://iobio.io/) we use this
to allow our backend system to access a user's local files for processing by
backend tools such as samtools.

# Example usage

First start up the proxy server. We'll assume it's publicly available at
example.com. You can either download it from the release page, or see
below for instructions on building.

Then start it up:

```bash
./fibridge-proxy-rs --port 9001
```

A few useful options:

```bash
sudo ./fibridge-proxy-rs --host fbrg.xyz --port 80 --ip-address 172.xxx.x.x --key keyfile.pem --cert certfile.pem --secure-port 443
```

Create a hoster object in the browser and host a file (see
[this page](https://github.com/anderspitman/fibridge-host-js) for information
about the `fibridge-host` library):

```javascript
const fibridge = require('fibridge-host');
fibridge.createHoster({ proxyAddress: 'example.com', port: 9001, secure: false }).then((hoster) => {

const file = new File(["Hi there"], "file.txt", {
    type: "text/plain",
  });

const path = '/' + file.name;

hoster.hostFile(path, file);

// This is necessary because fibridge automatically generates a randomized
  // hoster id which is included in the path.
  const fullPath = hoster.getHostedPath(path);
  const url = `http://example.com:9001${fullPath}`;

console.log(url);
});
```

That will print out a URL for the hosted file. You can then retrieve the file
using any http client:

```bash
curl example.com:9001/<hoster-uuid>/file.txt
Hi there
```

Ranged requests work too:
```bash
curl -H "Range: bytes=0-2" example.com:9001/<hoster-uuid>/file.txt
Hi
```

# Building
In order to build from source, you'll first need rust installed. The proxy currently expects
the GUI repo to be available in the same directory, like this:

```
fibridge/
  fibridge-proxy-rs/
  fibridge-gui-js/
```
  
See [fibridge-gui-js](https://github.com/anderspitman/fibridge-gui-js) for instructions
on building the GUI.

Once the GUI is built, run:

```bash
cargo build --release
```

If all goes well you should end up with a binary in `fibridge-proxy-rs/target/release`.

# Other implementations
There is an API-compatible JavaScript (Node) implementation of the proxy server
available
[here](https://github.com/anderspitman/fibridge-proxy-js).

# API
I still need to document the API, but it's pretty simple. It uses
[omni-rpc](https://github.com/omnistreams/omni-rpc-spec), which is
itself built on top of
[omnistreams](https://github.com/omnistreams/omnistreams-spec).

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