Created
August 8, 2024 13:34
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Intercept and forward HTTPS requests
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| const express = require("express"); | |
| const https = require("https"); | |
| const fs = require("fs"); | |
| const path = require("path"); | |
| const axios = require("axios"); | |
| // environment variables | |
| const IP_ADDRESS = process.env.IP_ADDRESS; | |
| /** | |
| * Forward request to original server / IP address | |
| * @param {*} req | |
| * @returns | |
| */ | |
| async function forward(req) { | |
| const url = `https://${IP_ADDRESS}` + req.originalUrl; // Append the original URL path and query parameters | |
| const headers = req.headers; | |
| const body = req.body; | |
| try { | |
| const response = await axios({ | |
| method: req.method, // Use the same HTTP method as the incoming request | |
| url: url, | |
| headers: headers, | |
| data: body, | |
| httpsAgent: new https.Agent({ rejectUnauthorized: false }), // Ignore SSL certificate validation for the forwarded request | |
| }); | |
| // Return the response data, status, and headers to be used in the middleware | |
| return { | |
| data: response.data, | |
| status: response.status, | |
| headers: response.headers, | |
| }; | |
| } catch (error) { | |
| console.error("Error forwarding request:", error.message); | |
| throw error; // Re-throw the error to be handled by the middleware | |
| } | |
| } | |
| // Create an Express application | |
| const app = express(); | |
| // Middleware to parse JSON bodies | |
| app.use(express.json()); | |
| // Middleware to parse URL-encoded bodies | |
| app.use(express.urlencoded({ extended: true })); | |
| /** | |
| * Middleware to catch all incoming requests | |
| */ | |
| app.use(async (req, res, next) => { | |
| // console.log(req) | |
| // console.log(req.query) | |
| // console.log(req.headers) | |
| // console.log(req.method) | |
| // next() | |
| // forward the request | |
| try { | |
| const forwardResponse = await forward(req); | |
| // Set the status code and headers from the forwarded response | |
| res.status(forwardResponse.status); | |
| Object.keys(forwardResponse.headers).forEach((key) => { | |
| res.setHeader(key, forwardResponse.headers[key]); | |
| }); | |
| console.log( | |
| req.originalUrl, | |
| forwardResponse.status, | |
| JSON.stringify(forwardResponse.data, null, 2) | |
| ); | |
| // Send the forwarded response data | |
| res.send(forwardResponse.data); | |
| } catch (err) { | |
| console.log("ERROR", err); | |
| } | |
| }); | |
| // Read the certificate and key | |
| const key = fs.readFileSync(path.join(__dirname, "key.pem")); | |
| const cert = fs.readFileSync(path.join(__dirname, "cert.pem")); | |
| // Create the HTTPS server | |
| const server = https.createServer({ key: key, cert: cert }, app); | |
| // Start listening on port 443 | |
| server.listen(443, () => { | |
| console.log("Express server is running on https://127.0.0.1:443"); | |
| }); |
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