Merge pull request #8 from JBB0807/node-http-proxy

added proxy service

.gitignore

@@ -8,6 +8,7 @@ pnpm-debug.log*
 lerna-debug.log*
 
 **/node_modules
+*.env
 dist
 dist-ssr
 *.local

proxy-service/Dockerfile

@@ -0,0 +1,26 @@
+# syntax=docker/dockerfile:1
+
+# Use the official Node.js image as the base image
+ARG NODE_VERSION=22.13.1
+FROM node:${NODE_VERSION}-slim AS base
+
+# Set the working directory
+WORKDIR /app
+
+# Install curl, ping, and netstat
+RUN apt-get update && apt-get install -y curl iputils-ping net-tools
+
+COPY . .
+RUN npm install
+
+# Install dependencies using npm ci for deterministic builds
+# RUN --mount=type=cache,target=/root/.npm npm ci --production
+
+# Copy the application source code
+COPY --link . .
+
+# Expose the application port
+EXPOSE 8080
+
+# Define the command to run the application
+CMD ["node", "server.js"]

proxy-service/fly.toml

@@ -0,0 +1,42 @@
+# fly.toml app configuration file generated for proxy-service on 2025-04-30T16:36:47-07:00
+#
+# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
+#
+
+app = 'proxy-service'
+primary_region = 'sea'
+
+[build]
+
+[env]
+  PORT = '8080'
+
+[http_service]
+  internal_port = 8080
+  force_https = true
+  auto_stop_machines = 'stop'
+  auto_start_machines = true
+  min_machines_running = 0
+  processes = ['app']
+
+[[services]]
+  protocol = 'tcp'
+  internal_port = 8080
+
+  [[services.ports]]
+    port = 80
+    handlers = ['http']
+
+  [[services.ports]]
+    port = 443
+    handlers = ['tls', 'http']
+
+  [[services.tcp_checks]]
+    interval = '10s'
+    timeout = '2s'
+    grace_period = '5s'
+
+[[vm]]
+  memory = '1gb'
+  cpu_kind = 'shared'
+  cpus = 1

proxy-service/package.json

@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "express": "^5.1.0",
+    "http-proxy": "^1.18.1",
+    "http-proxy-middleware": "^3.0.5"
+  }
+}

proxy-service/server.js

@@ -0,0 +1,34 @@
+const express = require('express');
+const { createProxyMiddleware } = require('http-proxy-middleware');
+
+const app = express();
+const port = 8080;
+
+// Middleware to handle dynamic IPv6 proxying
+app.use('/:ipv6', (req, res, next) => {
+  const ipv6 = req.params.ipv6;
+
+  // Validate or sanitize the IPv6 if needed
+  const targetUrl = `http://[${ipv6}]:8000`;
+  console.log(`Proxying request to: ${targetUrl}`);
+
+  // Create and attach the proxy middleware *once per request*
+  const proxy = createProxyMiddleware({
+    target: targetUrl,
+    changeOrigin: true,
+    logLevel: 'debug',
+    // pathRewrite: {
+    //   [`^/${ipv6}`]: '/', // Send to root of the target
+    // },
+    onError(err, req, res) {
+      console.error('Proxy error:', err.message);
+      res.status(502).send('Bad Gateway: Failed to connect to target');
+    }
+  });
+
+  return proxy(req, res, next);
+});
+
+app.listen(port, '0.0.0.0', () => {
+  console.log(`Proxy server listening on http://0.0.0.0:${port}`);
+});