Change the return type of write() from void to size_t on WiFiServer class

WiFi/WiFiClient.h

@@ -27,6 +27,8 @@ public:
 
   friend class WiFiServer;
 
+  using Print::write;
+
 private:
   static uint16_t _srcport;
   uint8_t _sock;   //not used

WiFi/WiFiServer.cpp

@@ -46,13 +46,15 @@ WiFiClient WiFiServer::available(byte* status)
     return WiFiClient(255);
 }
 
-void WiFiServer::write(uint8_t b)
+size_t WiFiServer::write(uint8_t b)
 {
-    write(&b, 1);
+    return write(&b, 1);
 }
 
-void WiFiServer::write(const uint8_t *buffer, size_t size)
+size_t WiFiServer::write(const uint8_t *buffer, size_t size)
 {
+	size_t n = 0;
+
     for (int sock = 0; sock < MAX_SOCK_NUM; sock++)
     {
         if (WiFiClass::_server_port[sock] != 0)
@@ -62,8 +64,9 @@ void WiFiServer::write(const uint8_t *buffer, size_t size)
             if (WiFiClass::_server_port[sock] == _port &&
                 client.status() == ESTABLISHED)
             {                
-                client.write(buffer, size);
+                n+=client.write(buffer, size);
             }
         }
     }
+    return n;
 }

WiFi/WiFiServer.h

@@ -17,8 +17,10 @@ public:
   WiFiServer(uint16_t);
   WiFiClient available(uint8_t* status = NULL);
   void begin();
-  virtual void write(uint8_t);
+  virtual size_t write(uint8_t);
-  virtual void write(const uint8_t *buf, size_t size);
+  virtual size_t write(const uint8_t *buf, size_t size);
+
+  using Print::write;
 };
 
 #endif