# Web Application

The **Web application**

- handles signaling between Unity and the Web browser
- is the location of the Web page

The web application uses WebRTC technologies, which means that your browser must also support WebRTC. You can see a table of supported browsers [here](index.md#web-browsers-support).

> [!NOTE]
> See [this page](https://caniuse.com/#search=webrtc) for details on which browsers support WebRTC.


## Lanching The Server

You can get a executable file of web server from the **Wizard Window**.

1. Select **Window > Render Streaming > Render Streaming Wizard** in the menu bar.

2. Select **Download latest version web app**.

![Download webapp](images/wizard_download_webapp.png)

3. Run it from the command line.

![Launch webserver explorer](images/launch_webserver_explorer.png)

## Command Options

| Option | Details | Default |
| ------ | ------- | ------- |
| `-h` `--help` | Show the help menu | |
| `-p` `—port \<number\>` | Set the port number | `80` |
| `-s` `--secure` | Use https | |
| `-k` `—keyfile \<path\>`  | Designate the private key file to use with https | `server.key` |
| `-c` `—certfile \<path\>` | Designate the certification file to use with https | `server.cert` |
| `-t` `--type \<type\>` | Type of signaling protocol, Choose websocket or http | `websocket` |
| `-m` `—-mode \<type\>` | Choose Communication mode public or private | `public` |
| `-l` `—logging \<type\>` | Choose http logging type (use [morgan](https://www.npmjs.com/package/morgan) library) | `dev` |

## Command Examples

Use the following command to start the server as http. Port `80` will be used.

```shell
.\webserver
```

This command will run the server as https. Port 443 will be used. A certificate (`server.cert`) and a key (`server.key`) must also be set up ([details](https.md)).

```shell
.\webserver -s -p 443
```

The command will run in the mode that uses **HTTP polling** as the signaling protocol.

```shell
.\webserver -t http
```

The command will run in private mode.

```shell
.\webserver -m private
```
> [!NOTE]
> In private mode, Signaling only using same `ConnectionId` between peers.


When running a https server, keep in mind to set the `URL signaling` property of the Renderstreaming component in Unity to https as well.
Use this command to display the help guide.

```shell
.\webserver -h
```

## How to custmize web application

Please see the page [Customize Web Application](customize-webapp.md).