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src/certnode/lib/client.js

@@ -27,13 +27,13 @@ class Client {
     this.accountPublicJwk = null
     this.accountPublicKey = null
     this.directoryUrl = directoryUrl
+    this.challengeCallbacks = {}
     this.hasDirectory = false
     this.myAccountUrl = ''
     this.newAccountUrl = ''
     this.newNonceUrl = ''
     this.newOrderUrl = ''
     this.replayNonce = ''
-    this.server = null
     this.thumbprint = ''
   }
 
@@ -89,8 +89,6 @@ class Client {
     await this.pollAuthz(authzUrls[0])
     const { certificate, privateKeyData } = await this.finalizeOrder(finalizeUrl, domain, email)
 
-    this.server?.close()
-
     return { certificate, privateKeyData }
   }
 
@@ -394,41 +392,17 @@ class Client {
   }
 
   receiveServerRequest (challenge, cb) {
-    this.server?.close()
-    this.server = http.createServer()
-
     return new Promise((resolve, reject) => {
-      this.server
-        .once('error', reject)
-        .on('request', (req, res) => {
-          if (req.method !== 'GET') {
-            res.writeHead(405)
-            res.writeHead(http.STATUS_CODES[405])
-            return
-          }
-
-          if (req.url !== '/.well-known/acme-challenge/' + challenge.token) {
-            res.writeHead(404)
-            res.end(http.STATUS_CODES[404])
-            return
-          }
-
-          res.writeHead(200, {
-            'content-type': 'application/octet-stream'
-          })
-
-          res.end(challenge.token + '.' + this.thumbprint)
-          resolve()
-        })
-
-      this.server.listen(80, '0.0.0.0')
-
-      setTimeout(() => {
+      const time = setTimeout(() => {
         reject(new Error('Timed out waiting for server request'))
-      }, 10e3)
-
-      cb && cb()
-    })
+      }, 10e3);
+      this.challengeCallbacks[challenge.token] = function () {
+        setTimeout(cb, 100);
+        clearTimeout(time);
+        resolve();
+        return challenge.token + '.' + this.thumbprint;
+      }
+    });
   }
 
   setReplayNonce (res) {

src/client.js

@@ -1,9 +1,8 @@
 const record_prefix = 'forward-domain=';
-
-const {
-    default: axios
-} = require('axios');
 const path = require('path');
+const {
+    client
+} = require('./sni');
 const {
     findTxtRecord
 } = require('./util');
@@ -30,8 +29,20 @@ async function buildCache(host) {
     };
 }
 
-const listener = async function (req, res) {
+const acme_prefix = '/.well-known/acme-challenge/';
+
+const listener = async function (/** @type {import('http').IncomingMessage} */ req, /** @type {import('http').ServerResponse} */ res) {
     try {
+        if (req.url.startsWith(acme_prefix)) {
+            const token = req.url.slice(acme_prefix.length);
+            if (client.challengeCallbacks[token]) {
+                res.write(client.challengeCallbacks[token]());
+            } else {
+                res.writeHead(404)
+            }
+            return;
+        }
+
         let cache = resolveCache[req.headers.host];
         if (!cache || (Date.now() > cache.expire)) {
             cache = await buildCache(req.headers.host);