y_socket: try send file, neuron_t: modify EXTRACT from filr to neuron/tensor

y_socket_t/include/y_socket_t/y_socket_t.h

@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <string.h>
 
 //#include <sys/socket.h>