add connectedClients see Links2004#242

Links2004 · Links2004 · commit 4b33575af1ec · 2018-05-10T20:43:08.000+02:00
diff --git a/src/WebSocketsServer.cpp b/src/WebSocketsServer.cpp
@@ -403,6 +403,24 @@ void WebSocketsServer::setAuthorization(const char * auth) {
     }
 }
 
+/**
+ * count the connected clients (optional ping them)
+ * @param ping bool ping the connected clients
+ */
+int WebSocketsServer::connectedClients(bool ping) {
+    WSclient_t * client;
+    int count = 0;
+	for(uint8_t i = 0; i < WEBSOCKETS_SERVER_CLIENT_MAX; i++) {
+		client = &_clients[i];
+		if(client->status == WSC_CONNECTED) {
+			if(ping != true || sendPing(i)) {
+				count++;
+			}
+		}
+	}
+    return count;
+}
+
 #if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
 /**
  * get an IP for a client
diff --git a/src/WebSocketsServer.h b/src/WebSocketsServer.h
@@ -95,6 +95,8 @@ class WebSocketsServer: protected WebSockets {
         void setAuthorization(const char * user, const char * password);
         void setAuthorization(const char * auth);
 
+        int connectedClients(bool ping = false);
+
 #if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32)
         IPAddress remoteIP(uint8_t num);
 #endif
