@studiowebux/server
v6.0.1-alpha
Published
The entry point for our framework, http or https and port configuration
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Readme
Introduction
This module starts an HTTP or HTTPS server.
It requires an expressJS
application or an handler
function to launch the server.
This is possible to use an HTTP or an HTTPS server, but not both in same time.
To redirect the traffic from HTTP to HTTPS, this is recommended to use a proxy (Nginx, HAProxy and others)
For more details (EN/FR) : Wiki
Installation
npm install --save @studiowebux/server
Usage
Configuration
Options
| Key | Value | Description |
| ---------- | --------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| ssl | { enabled: false, key: "base64", cert: "base64" }
| To enable and configure the HTTPS |
| enterprise | Enterprise name | |
| author | Your name | |
| project | Your project name | The NPM project name |
| version | The version of your backend | require("./package.json")["version"]
allows to use the version in package.json
file directly |
| endpoint | The base URL to access the backend | Don't forget to configure the proxy server with this information |
| port | The port to listen on | If the port is already used, the server will throw an error. Using the port 0 will use a random port. |
| cores | Number of cores to use when using the cluster mode. | If this value is undefined, all available cores will be use. |
The available options:
const options = {
ssl: {
enabled: false,
key: "base64",
cert: "base64",
},
enterprise: "Studio Webux",
author: "Tommy Gingras",
project: "@studiowebux/bin",
version: require("./package.json")["version"],
endpoint: "/api/v1",
port: 1337,
cores: 4,
};
Functions
constructor(opts, app, log = console)
It initializes the server based on the configuration.
const WebuxServer = require("@studiowebux/server");
const webuxServer = new WebuxServer(opts, app, console);
The
log
parameter allows to use a custom logger function.
The
app
parameter must be anExpressJS
or anhandler
function (See below for more details).
StartServer(): Promise <Object>
This function starts only one process for the application.
It means that only one core will be use on the system.
To know the difference, please read this : NodeJS Cluster
const instance = await webuxServer.StartServer();
StartCluster(): Promise <Object>
This function starts multiple processes based on the number of cores defined in the configuration (or all cores if undefined).
The technology used for that is NodeJS Cluster
If the key
cores
is undefined, all cores will be used.
const instance = await webuxServer.StartCluster();
The first instance returned is the actual cluster (returned by the master), that means that to use the functions from the HTTP/HTTPS server, you have to do a condition,
Example:
// Start the cluster
webuxServer.StartCluster().then((instance) => {
if (instance && !instance.isMaster) {
// For example, to stop the HTTP/HTTPS server;
// right after the creation (this is useless ..)
instance.close();
}
});
The
cluster.js
file within theexamples
directory contains some functions to show the idea.
Quick start
The
/examples
directory has multiple demos and resources.
How to create an HTTP server with Express
Step 1 - The configuration
config/server.js
module.exports = {
enterprise: "Example Inc.",
author: "Example",
project: "example",
version: require("./package.json")["version"],
endpoint: "/api/v1",
port: 1337,
};
Step 2 - The server file with express routing
index.js
const WebuxServer = require("@studiowebux/server");
const express = require("express");
const app = express();
const options = require("config/server.js");
const webuxServer = new WebuxServer(options, app, console);
app.set("node_env", process.env.NODE_ENV || "development");
app.set("port", process.env.PORT || 1337);
app.get("*", (req, res, next) => {
console.log(`New Request`);
return next();
});
app.get("/", (req, res, next) => {
res.status(200).json({ message: "Something Fun !" });
});
webuxServer.StartServer();
// OR to use the cluster implementation
// webuxServer.StartCluster();
How to create an HTTPS server with Express
Step 1 - The certificates
To generate a self-signed certificate:
This is highly recommended to use real certificate,
this example should only be used in test and development.
openssl req -new -newkey rsa:4096 -x509 -sha256 -days 365 -nodes -out cert.crt -keyout key.key
To convert the certificate
and the key
in base64
format:
cat key.key | base64
cat cert.crt | base64
To add those in the environment variables:
export KEY=...
export CERT=...
Step 2 - The configuration
config/server.js
module.exports = {
ssl: {
enabled: process.env.KEY && process.env.CERT ? true : false,
key: process.env.KEY,
cert: process.env.CERT,
},
enterprise: "Example Inc.",
author: "Example",
project: "example",
version: require("./package.json")["version"],
endpoint: "/api/v1",
port: 1337,
};
Step 3 - The server file with express routing
index.js
const WebuxServer = require("@studiowebux/server");
const express = require("express");
const app = express();
const options = require("config/server.js");
const webuxServer = new WebuxServer(options, app, console);
app.set("node_env", process.env.NODE_ENV || "development");
app.set("port", process.env.PORT || 1337);
app.get("*", (req, res, next) => {
console.log(`New Request`);
return next();
});
app.get("/", (req, res, next) => {
res.status(200).json({ message: "Something Fun !" });
});
webuxServer.StartServer();
// OR to use the cluster implementation
// webuxServer.StartCluster();
How to create a server without Express
Step 1 - The handler
function
index.js
function handler(req, res) {
res.writeHead(200, { "Content-Type": "text/html" });
res.write("Hello World!");
res.end();
}
Official documentation: NodeJS HTTP
Step 2 - The configuration
config/server.js
module.exports = {
enterprise: "Example Inc.",
author: "Example",
project: "example",
version: require("./package.json")["version"],
endpoint: "/api/v1",
port: 1337,
cores: 4, // Optional, used with StartCluster()
};
Step 3 - The server file with the handler
index.js
const WebuxServer = require("@studiowebux/server");
const handler = require("handler.js");
const options = require("config/server.js");
const webuxServer = new WebuxServer(options, handler, console);
webuxServer.StartServer();
// OR to use the cluster implementation
// webuxServer.StartCluster();
The server events
By default, these events are implemented
- error
- close
- listening
They print messages to keep traces of what happened.
To use the events, you can do something like:
Both StartServer
& StartCluster
are configured the same way:
const WebuxServer = require("@studiowebux/server");
const handler = require("handler.js");
const options = require("config/server.js");
const webuxServer = new WebuxServer(options, handler, console);
webuxServer.StartServer();
// webuxServer.StartCluster();
webuxServer.server.on("connection", (req) => {
console.log(req);
//
});
Videos and other resources
Contributing
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
License
SEE LICENSE IN license.txt