exposed uws_app_close function from capi (#1667)

capi/libuwebsockets.cpp

@@ -408,6 +408,20 @@ extern "C"
             uwsApp->domain(std::string(server_name, server_name_length));
         }
     }
+    void uws_app_close(int ssl, uws_app_t *app)
+    {
+        if (ssl)
+        {
+            uWS::SSLApp *uwsApp = (uWS::SSLApp *)app;
+            uwsApp->close();
+        }
+        else
+        {
+            uWS::App *uwsApp = (uWS::App *)app;
+            uwsApp->close();
+        }
+    }
+
     void uws_app_destroy(int ssl, uws_app_t *app)
     {
         if (ssl)

capi/libuwebsockets.h

@@ -1,16 +1,16 @@
 /*
  * Copyright 2022 Ciro Spaciari
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -172,6 +172,7 @@ extern "C"
     DLL_EXPORT void uws_app_listen_domain(int ssl, uws_app_t *app, const char *domain, size_t domain_length, uws_listen_domain_handler handler, void *user_data);
     DLL_EXPORT void uws_app_listen_domain_with_options(int ssl, uws_app_t *app, const char *domain,size_t domain_length, int options, uws_listen_domain_handler handler, void *user_data);
     DLL_EXPORT void uws_app_domain(int ssl, uws_app_t *app, const char* server_name, size_t server_name_length);
+    DLL_EXPORT void uws_app_close(int ssl,  uws_app_t *app);
 
     DLL_EXPORT bool uws_constructor_failed(int ssl, uws_app_t *app);
     DLL_EXPORT unsigned int uws_num_subscribers(int ssl, uws_app_t *app, const char *topic, size_t topic_length);