fix: better server side protocol detection (fixes #123)

Use module that detects protocol used in more accurate way.

package.json

@@ -47,6 +47,7 @@
     "acorn-dynamic-import": "^4.0.0",
     "acorn-walk": "^6.1.1",
     "cookie": "^0.4.0",
+    "is-https": "^1.0.0",
     "js-cookie": "^2.2.0",
     "vue-i18n": "^8.11.2",
     "vue-i18n-extensions": "^0.2.1"

src/plugins/routing.js

@@ -1,5 +1,6 @@
-import './middleware';
+import './middleware'
 import Vue from 'vue'
+import isHTTPS from 'is-https'
 
 const routesNameSeparator = '<%= options.routesNameSeparator %>'
 
@@ -73,11 +74,11 @@ function switchLocalePathFactory (i18nPath) {
       const lang = this[i18nPath].locales.find(l => l[LOCALE_CODE_KEY] === locale)
       if (lang && lang[LOCALE_DOMAIN_KEY]) {
         let protocol
-        if (!process.browser) {
+        if (process.server) {
           const { req } = this.$options._parentVnode.ssrContext
-          protocol = req.secure ? 'https' : 'http'
+          protocol = isHTTPS(req) ? 'https' : 'http'
         } else {
-          protocol = window.location.href.split(':')[0]
+          protocol = window.location.protocol.split(':')[0]
         }
         path = protocol + '://' + lang[LOCALE_DOMAIN_KEY] + path
       } else {

yarn.lock

@@ -6713,6 +6713,11 @@ is-glob@^4.0.0, is-glob@^4.0.1:
   dependencies:
     is-extglob "^2.1.1"
 
+is-https@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-https/-/is-https-1.0.0.tgz#9c1dde000dc7e7288edb983bef379e498e7cb1bf"
+  integrity sha512-1adLLwZT9XEXjzhQhZxd75uxf0l+xI9uTSFaZeSESjL3E1eXSPpO+u5RcgqtzeZ1KCaNvtEwZSTO2P4U5erVqQ==
+
 is-installed-globally@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/is-installed-globally/-/is-installed-globally-0.1.0.tgz#0dfd98f5a9111716dd535dda6492f67bf3d25a80"