Package Exports

frontline

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Readme

Frontline

What does it do?

You can overwrite headers being returned for a given URL
You can change the body being returned by a given URL
You can find and replace all urls on the page
You can quickly build fake JSON data services for proof of concepts in AJAX

Why would you want this?

To help intercept, change and debug web pages for web development. Frontline is a transparent web debugging proxy that can be used for any browser.

Limitations

Currently Frontline only supports overriding/modifying a single Url.

Quick Start

Install Node.
npm install frontline
Open Rules.json and add some rules (see Rules.json section below)
Run node frontline.js
Open your browser of choice. In this example we will use Chrome. In Chrome Open Settings, click Show advanced settings... at the bottom. Change Proxy Settings. Set the proxy server to be 127.0.0.1 and set the port to 8050.
You can modify the Rules.json without having to restart the Proxy Server

Rules.json

All available options are listed below. Make sure you keep the format of this file in true Json format. I.e. keys enclosed in quotation marks.

{
    "url": "websitetomodify.com",
    "headers": {
        "Content-Type": "application/x-www-form-urlencoded",
        "Some-Custom-Header": "My custom value"
    },
    "body": "Hello World",
    "replaceUrls": {
        "oldUrl": "replacethisurl.com",
        "newUrl": "withthisurl.com"
    }
}

Details

Key	Value
url	Set this URL to the URL that you want to modify. Frontline will ignore all other URLs.
headers	Specifying any headers here will override any headers returned by the original server.
body	Specifying any body will override any body returned by the original server.
oldUrl	Set this to the URL you want to find
newUrl	Set this to the URL you want to replace with

config.js

{
    proxyServer: {
        port: 8050
    },
    paths: {
        rules: "Rules.json"
    }
}

Details

Key	Value
port	The port that the proxy server runs on.
rules	The path to the rules file.