feat(config): add browserid pool maxSockets option

lib/browserid.js

@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-const request = require('request');
 
 const AppError = require('./error');
 const config = require('./config');
@@ -10,9 +9,15 @@ const logger = require('./logging')('assertion');
 const P = require('./promise');
 
 const HEX_STRING = /^[0-9a-f]+$/;
-const VERIFICATION_URL = config.get('browserid.verificationUrl');
 const AUDIENCE = config.get('publicUrl');
 
+const request = require('request').defaults({
+  url: config.get('browserid.verificationUrl'),
+  pool: {
+    maxSockets: config.get('browserid.maxSockets')
+  }
+});
+
 function unb64(text) {
   return Buffer(text, 'base64').toString('utf8');
 }
@@ -40,7 +45,6 @@ module.exports = function verifyAssertion(assertion) {
   logger.verbose('assertion', new Assertion(assertion));
   var d = P.defer();
   var opts = {
-    url: VERIFICATION_URL,
     json: {
       assertion: assertion,
       audience: AUDIENCE

lib/config.js

@@ -26,6 +26,10 @@ const conf = convict({
       env: 'ISSUER',
       default: 'api.accounts.firefox.com'
     },
+    maxSockets: {
+      doc: 'The maximum number of connections that the pool can use at once.',
+      default: 10,
+    },
     verificationUrl: {
       doc: 'URL to the remote verifier we will use for fxa-assertions',
       format: 'url',