ESP8266 Fix TLS SNI which would prevent AWS IoT connection (#17936)

CHANGELOG.md

@@ -14,6 +14,7 @@ All notable changes to this project will be documented in this file.
 ### Changed
 
 ### Fixed
+- ESP8266 Fix TLS SNI which would prevent AWS IoT connection
 
 ### Removed
 

lib/lib_ssl/tls_mini/src/WiFiClientSecureLightBearSSL.cpp

@@ -309,7 +309,7 @@ int WiFiClientSecure_light::connect(IPAddress ip, uint16_t port) {
     setLastError(ERR_TCP_CONNECT);
     return 0;
   }
-  return _connectSSL(nullptr);
+  return _connectSSL(_domain.isEmpty() ? nullptr : _domain.c_str());
 }
 #endif