diff --git a/arduino/libraries/WiFi/src/WiFiClient.cpp b/arduino/libraries/WiFi/src/WiFiClient.cpp
index b4c43048..aa482657 100644
--- a/arduino/libraries/WiFi/src/WiFiClient.cpp
+++ b/arduino/libraries/WiFi/src/WiFiClient.cpp
@@ -87,15 +87,14 @@ size_t WiFiClient::write(const uint8_t *buf, size_t size)
     return 0;
   }
 
-  int result = lwip_send_r(_socket, (void*)buf, size, MSG_DONTWAIT);
+  int result = lwip_send_r(_socket, (void*)buf, size, MSG_PEEK);
 
   if (result < 0) {
-    lwip_close_r(_socket);
-    _socket = -1;
     return 0;
   }
 
   return result;
+
 }
 
 int WiFiClient::available()
diff --git a/main/CommandHandler.cpp b/main/CommandHandler.cpp
index 0bd7a8d7..7d2c3f96 100644
--- a/main/CommandHandler.cpp
+++ b/main/CommandHandler.cpp
@@ -36,7 +36,7 @@
 
 #include "esp_log.h"
 
-const char FIRMWARE_VERSION[6] = "1.4.2";
+const char FIRMWARE_VERSION[6] = "1.4.3";
 
 /*IPAddress*/uint32_t resolvedHostname;