frontend web app: Fix direct URL for remote control

URL http://frontend:6547/MythFE/ was not being directed to the SPA and
was giving a 404 return code. Now fixed.

Fixes #811

mythtv/libs/libmythbase/http/mythhttprewrite.cpp

@@ -56,7 +56,8 @@ HTTPResponse MythHTTPRewrite::RewriteToSPA(const HTTPRequest2& Request, const QS
     LOG(VB_HTTP, LOG_INFO, QString("Rewriting request to web app '%1'").arg(File));
     if (!File.isEmpty()
         && (Request->m_path.isEmpty() || Request->m_path == "/"
-            || Request->m_path == "/dashboard/" || Request->m_path == "/setupwizard/"))
+            || Request->m_path == "/dashboard/" || Request->m_path == "/setupwizard/"
+            || Request->m_path == "/MythFE/"))
     {
         Request->m_fileName = File;
         Request->m_status = HTTPOK;

mythtv/programs/mythfrontend/mythfrontend.cpp

@@ -133,6 +133,7 @@ static inline void fe_sd_notify(const char */*str*/) {};
 #include "libmythbase/http/mythhttproot.h"
 #include "libmythbase/http/mythhttpinstance.h"
 #include "services/mythfrontendservice.h"
+#include "libmythbase/http/mythhttprewrite.h"
 
 static MythThemedMenu *g_menu;
 
@@ -2212,6 +2213,11 @@ Q_DECL_EXPORT int main(int argc, char **argv)
     int ret = 0;
     {
         MythHTTPInstance::Addservices({{ FRONTEND_SERVICE, &MythHTTPService::Create<MythFrontendService> }});
+
+        // Send all unknown requests into the web app. make bookmarks and direct access work.
+        auto spa_index = [](auto && PH1) { return MythHTTPRewrite::RewriteToSPA(std::forward<decltype(PH1)>(PH1), "mythfrontend.html"); };
+        MythHTTPInstance::AddErrorPageHandler({ "=404", spa_index });
+
         auto root = [](auto && PH1) { return MythHTTPRoot::RedirectRoot(std::forward<decltype(PH1)>(PH1), "mythfrontend.html"); };
         MythHTTPScopedInstance webserver({{ "/", root}});
         ret = QCoreApplication::exec();