fix set/getSocketOption inheritance (#7480)

Author: bertmelis

Diff for: libraries/WiFi/src/WiFiClient.h

@@ -84,7 +84,7 @@ class WiFiClient : public ESPLwIPClient
         return !this->operator==(rhs);
     };
 
-    int fd() const;
+    virtual int fd() const;
 
     int setSocketOption(int option, char* value, size_t len);
     int setSocketOption(int level, int option, const void* value, size_t len);

Diff for: libraries/WiFiClientSecure/src/WiFiClientSecure.cpp

@@ -376,16 +376,9 @@ int WiFiClientSecure::setTimeout(uint32_t seconds)
         return 0;
     }
 }
-int WiFiClientSecure::setSocketOption(int option, char* value, size_t len)
-{
-    return setSocketOption(SOL_SOCKET, option, (const void*)value, len);
-}
 
-int WiFiClientSecure::setSocketOption(int level, int option, const void* value, size_t len)
+int WiFiClientSecure::fd() const
 {
-    int res = setsockopt(sslclient->socket, level, option, value, len);
-    if(res < 0) {
-        log_e("fail on %d, errno: %d, \"%s\"", sslclient->socket, errno, strerror(errno));
-    }
-    return res;
+    return sslclient->socket;
 }
+

Diff for: libraries/WiFiClientSecure/src/WiFiClientSecure.h

@@ -80,8 +80,7 @@ class WiFiClientSecure : public WiFiClient
     const mbedtls_x509_crt* getPeerCertificate() { return mbedtls_ssl_get_peer_cert(&sslclient->ssl_ctx); };
     bool getFingerprintSHA256(uint8_t sha256_result[32]) { return get_peer_fingerprint(sslclient, sha256_result); };
     int setTimeout(uint32_t seconds);
-    int setSocketOption(int option, char* value, size_t len);
-    int setSocketOption(int level, int option, const void* value, size_t len);
+    int fd() const;
 
     operator bool()
     {