fixing little bugs. closing connection on error.

Changelog

@@ -1,3 +1,6 @@
+2023-09-17:
+- closing connection if an error occured.
+
 2023-09-16:
 - added message if a connection is closed.
 

gui.cc

@@ -404,7 +404,7 @@ gboolean cb_thread_network_data_add (gpointer data) {
 			}
 			else {
 				text = text + " Registers: " + std::to_string (mbdata->regstart);
-				text = text + " Bytes: " + std::to_string (mbdata->regcnt);
+				text = text + " Cnt: " + std::to_string (mbdata->regcnt);
 			}
 		}
 		text = text + "\n";
@@ -470,9 +470,6 @@ gboolean cb_thread_network_text_add (gpointer data) {
 
 		strftime (timetext, 255, "%H:%M:%S", curtime);
 
-		//
-		// build hex dump
-		//
 		//
 		//
 		text ="";

modbussrv.cc

@@ -261,16 +261,22 @@ void ModbusSrv::ServerThread() {
 							char *txt = (char*)malloc(255);
 							snprintf (txt, 255, "error on processing message\n");
 							gdk_threads_add_idle(cb_thread_network_text_add, txt);
+							delete clients[slot];
+							clients[slot] = NULL;
 						}
 					}
 					else if (mbindata->fc == 5 || mbindata->fc == 6) {
 						if (WorkerAndEncodeWriteSingle(mbindata, mboutdata)) {
 							clients[slot]->Write(mboutdata->buffer, mboutdata->bufferlen);
+							delete clients[slot];
+							clients[slot] = NULL;
 						}
 						else {
 							char *txt = (char*)malloc(255);
 							snprintf (txt, 255, "error on processing message\n");
 							gdk_threads_add_idle(cb_thread_network_text_add, txt);
+							delete clients[slot];
+							clients[slot] = NULL;
 						}
 					}
 					else if (mbindata->fc == 15 || mbindata->fc == 16) {
@@ -281,6 +287,8 @@ void ModbusSrv::ServerThread() {
 							char *txt = (char*)malloc(255);
 							snprintf (txt, 255, "error on processing message\n");
 							gdk_threads_add_idle(cb_thread_network_text_add, txt);
+							delete clients[slot];
+							clients[slot] = NULL;
 						}
 					}
 					gdk_threads_add_idle(cb_thread_network_data_add, mboutdata);