optional keep-alive

Author: pschatzmann

src/dlna/clients/DLNAControlPoint.h

@@ -221,6 +221,7 @@ class DLNAControlPoint : public IControlPoint {
 
   void setTransports(IHttpRequest& http, IUDPService& udp) {
     p_http = &http;
+    p_http->setConnection(DLNA_REQUEST_KEEP_ALIVE ? CON_KEEP_ALIVE : CON_CLOSE);
     p_udp = &udp;
   }
 

src/dlna_config.h

@@ -25,6 +25,11 @@
 #define DLNA_HTTP_REQUEST_TIMEOUT_MS 6000
 #endif
 
+/// Keep the session open for multiple requests
+#ifndef DLNA_REQUEST_KEEP_ALIVE
+#define DLNA_REQUEST_KEEP_ALIVE false
+#endif
+
 /// Define XML parse buffer size
 #ifndef XML_PARSER_BUFFER_SIZE
 #define XML_PARSER_BUFFER_SIZE 512