Nice bug.

If you had no attempts on device_open, the cached time was not set.
Then your next operation would instantly time out.
Solution => set time_cache on socket open.

api/glue/socket.c

@@ -146,6 +146,9 @@ eb_status_t eb_socket_open(uint16_t abi_code, const char* port, eb_width_t suppo
     return status;
   }
   
+  /* Update time_cache */
+  eb_socket_block(socketp, 0);
+  
   *result = socketp;
   return status;
 }