diff --git a/bin/cli.js b/bin/cli.js
index 1c763e2..bb60489 100755
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -9,6 +9,7 @@ const path = require('path')
 const os = require('os')
 const arrayify = require('array-back')
 const t = require('typical')
+const flatten = require('reduce-flatten')
 
 const cli = commandLineArgs(cliOptions.definitions)
 const usage = cli.getUsage(cliOptions.usageData)
@@ -47,6 +48,11 @@ const app = localWebServer({
   mocks: options.server.mocks
 })
 
+if (options.server.https) {
+  options.server.key = path.resolve(__dirname, '..', 'ssl', '127.0.0.1.key')
+  options.server.cert = path.resolve(__dirname, '..', 'ssl', '127.0.0.1.crt')
+}
+
 let isHttps = false
 if (options.server.key && options.server.cert) {
   const https = require('https')
@@ -72,7 +78,7 @@ function stop (msgs, exitCode) {
 function onServerUp () {
   let ipList = Object.keys(os.networkInterfaces())
     .map(key => os.networkInterfaces()[key])
-    .reduce((prev, curr) => prev = prev.concat(curr), [])
+    .reduce(flatten, [])
     .filter(iface => iface.family === 'IPv4')
   ipList.unshift({ address: os.hostname() })
   ipList = ipList
diff --git a/lib/cli-options.js b/lib/cli-options.js
index e729959..e582ad0 100644
--- a/lib/cli-options.js
+++ b/lib/cli-options.js
@@ -41,6 +41,10 @@ module.exports = {
       description: 'SSL cert. Supply along with --key to launch a https server.'
     },
     {
+      name: 'https', type: Boolean, group: 'server',
+      description: 'Enable HTTPS using a built-in key and cert, registered to the domain 127.0.0.1.'
+    },
+    {
       name: 'verbose', type: Boolean,
       description: 'Verbose output, useful for debugging.', group: 'server'
     },
diff --git a/ssl/127.0.0.1.crt b/ssl/127.0.0.1.crt
new file mode 100644
index 0000000..bb95c77
--- /dev/null
+++ b/ssl/127.0.0.1.crt
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/ssl/127.0.0.1.key b/ssl/127.0.0.1.key
new file mode 100644
index 0000000..5746322
--- /dev/null
+++ b/ssl/127.0.0.1.key
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----