MDEV-7419 Function cli_safe_read not exportedmariadb-5.5.42

Start the client API for low-level protocol access:
* unsigned long mysql_net_read_packet(MYSQL *mysql);
* unsigned long mysql_net_field_length(unsigned char **packet);

1 files changed, 17 insertions, 0 deletions

diff --git a/libmysql/libmysql.c b/libmysql/libmysql.c
index df18d6d60da..1df5f0b6d2c 100644
--- a/libmysql/libmysql.c
+++ b/libmysql/libmysql.c
@@ -4897,3 +4897,20 @@ my_bool STDCALL mysql_read_query_result(MYSQL *mysql)
   return (*mysql->methods->read_query_result)(mysql);
 }
 
+/********************************************************************
+  mysql_net_ functions - low-level API to MySQL protocol
+*********************************************************************/
+#if MYSQL_VERSION_ID > 100100
+#error remove these wrappers in 10.1, rename functions instead
+#endif
+
+ulong STDCALL mysql_net_read_packet(MYSQL *mysql)
+{
+  return cli_safe_read(mysql);
+}
+
+ulong STDCALL mysql_net_field_length(uchar **packet)
+{
+  return net_field_length(packet);
+}
+