OneProxy is a typical HTTP proxy + an interface to:

1. Inject data (JS, HTML or Raw Data)
2. Respond with data without making a request to the source server

Sample meta config:

{
    "app": {
        "PROXY_HOST": "127.0.0.1",
        "PROXY_PORT": "80",
        "SERVER_PORT": 5050
    },
    "interceptors": []
}

• app.PROXY_HOST - The source server host
• app.PROXY_PORT - The source server port
• app.SERVER_PORT - Port on which oneproxy server runs
• Interceptors - Array of interceptor config

Sample interceptor config: (Which is used in the demo)

[{
    "url": "/injectScript",
    "inject": true,
    "script": "alert('Script injected from config.json');"
}, {
    "url": "/injectScriptFromFile",
    "inject": true,
    "file": "./demo/files/injectJSFromFile.js"
}, {
    "url": "/injectRaw",
    "inject": true,
    "raw": true,
    "data": "<h1>This is injected from config.json</h1>"
}, {
    "url": "/injectRawFile",
    "inject": true,
    "raw": true,
    "file": "./demo/files/injectRawFile.html"
}, {
    "url": "/interceptRequest",
    "replace": true,
    "data": "Request has been intercepted, this is the response from config.json"
}, {
    "url": "/interceptRequestFromFile",
    "replace": true,
    "file": "./demo/files/interceptRequest.txt"
}]

• URL - Path of the request to be matched by oneproxy
• Inject (or) Replace
  • Inject - Inject the data or file to the response sent from source server, by default oneproxy considers this to be a JavaScript, hence data or the file is wrapped into a script tag and then injected to the HTML from the source server. However, you can set raw: true to ignore the script tag and inject the data as is
  • Replace - Respond to the request without calling the source server for the data, supports both data and file property

Clone oneproxy:

git clone https://github.com/codehate/oneproxy.git
cd oneproxy
npm install

Run demo server:

node demo/server.js

Server will be running at: http://127.0.0.1:3000

Start oneproxy:

# Use demo's config.json
node app.js --config=demo/config.json

Demo server is a simple server which returns the requested path:

For: http://127.0.0.1:3000

For: http://127.0.0.1:3000/path

Typical HTTP proxy: http://127.0.0.1:5050, this will send request to source server and proxy the response back:

Inject script:

http://127.0.0.1:5050/injectScript

Inject script from file:

http://127.0.0.1:5050/injectScriptFromFile

Inject raw content:

http://127.0.0.1:5050/injectRaw

Inject raw content from file:

http://127.0.0.1:5050/injectRawFile

Intercept the request:

http://127.0.0.1:5050/interceptRequest

Intercept the request from file:

http://127.0.0.1:5050/interceptRequestFromFile