-#define HTTP_CURL_OPT_STRING(keyname) HTTP_CURL_OPT_STRING_EX(keyname, keyname)
-#define HTTP_CURL_OPT_SSL_STRING(keyname) HTTP_CURL_OPT_STRING_EX(keyname, SSL##keyname)
-#define HTTP_CURL_OPT_SSL_STRING_(keyname) HTTP_CURL_OPT_STRING_EX(keyname, SSL_##keyname)
-#define HTTP_CURL_OPT_STRING_EX(keyname, optname) \
+#define HTTP_CURL_OPT_STRING(keyname, obdc) HTTP_CURL_OPT_STRING_EX(keyname, keyname, obdc)
+#define HTTP_CURL_OPT_SSL_STRING(keyname, obdc) HTTP_CURL_OPT_STRING_EX(keyname, SSL##keyname, obdc)
+#define HTTP_CURL_OPT_SSL_STRING_(keyname,obdc ) HTTP_CURL_OPT_STRING_EX(keyname, SSL_##keyname, obdc)
+#define HTTP_CURL_OPT_STRING_EX(keyname, optname, obdc) \