feat: added PROXY protocol support per <ladjs/lad#400>

index.js

@@ -5,6 +5,10 @@ const Router = require('router');
 const _ = require('lodash');
 const finalhandler = require('finalhandler');
 const parse = require('url-parse');
+const proxyWrap = require('findhit-proxywrap');
+const { boolean } = require('boolean');
+
+const proxiedHttp = proxyWrap.proxy(http);
 
 class ProxyServer {
   constructor(config) {
@@ -15,6 +19,7 @@ class ProxyServer {
         name: process.env.CERTBOT_WELL_KNOWN_NAME || null,
         contents: process.env.CERTBOT_WELL_KNOWN_CONTENTS || null
       },
+      proxyProtocol: boolean(process.env.PROXY_PROTOCOL || false),
       removeWwwPrefix: true,
       // useful option if you don't need https redirect
       // (e.g. it's just a certbot server)
@@ -52,7 +57,11 @@ class ProxyServer {
         res.end();
       });
 
-    this.server = http.createServer((req, res) => {
+    const createServer = this.config.proxyProtocol
+      ? proxiedHttp.createServer
+      : http.createServer;
+
+    this.server = createServer((req, res) => {
       router(req, res, finalhandler(req, res));
     });
 

package.json

@@ -20,25 +20,27 @@
     "Nick Baugh <niftylettuce@gmail.com> (http://niftylettuce.com/)"
   ],
   "dependencies": {
+    "boolean": "^3.0.1",
     "finalhandler": "^1.1.2",
+    "findhit-proxywrap": "^0.3.12",
     "lodash": "^4.17.15",
-    "router": "^1.3.3",
+    "router": "^1.3.5",
     "url-parse": "^1.4.7"
   },
   "devDependencies": {
-    "@commitlint/cli": "^8.2.0",
-    "@commitlint/config-conventional": "^8.2.0",
-    "ava": "^2.4.0",
-    "codecov": "^3.6.1",
-    "cross-env": "^6.0.3",
+    "@commitlint/cli": "^9.0.1",
+    "@commitlint/config-conventional": "^9.0.1",
+    "ava": "^3.10.0",
+    "codecov": "^3.7.0",
+    "cross-env": "^7.0.2",
     "eslint": "^6.7.2",
     "eslint-config-xo-lass": "^1.0.3",
-    "fixpack": "^2.3.1",
-    "husky": "^3.1.0",
-    "lint-staged": "^9.5.0",
-    "nyc": "^14.1.1",
-    "remark-cli": "^7.0.1",
-    "remark-preset-github": "^0.0.16",
+    "fixpack": "^3.0.6",
+    "husky": "^4.2.5",
+    "lint-staged": "^10.2.11",
+    "nyc": "^15.1.0",
+    "remark-cli": "^8.0.0",
+    "remark-preset-github": "^2.0.2",
     "supertest": "^4.0.2",
     "xo": "^0.25.3"
   },