--- /dev/null
+#include <stdint.h>
+
+#ifndef UPLOAD_TFTP
+#define UPLOAD_TFTP
+/* TFTP Error codes */
+enum tftp_error_codes {
+TFTP_ERR_UNKNOWN_ERROR = 0, // We have to use the message from the server
+TFTP_ERR_FILE_NOT_FOUND = 1, /**< File not found */
+TFTP_ERR_ACCESS_DENIED = 2, /**< Access violation */
+TFTP_ERR_DISK_FULL = 3, /**< Disk full or allocation exceeded */
+TFTP_ERR_ILLEGAL_OP = 4, /**< Illegal TFTP operation */
+TFTP_ERR_UNKNOWN_TID = 5, /**< Unknown transfer ID */
+TFTP_ERR_FILE_EXISTS = 6, /**< File already exists */
+TFTP_ERR_UNKNOWN_USER = 7, /**< No such user */
+TFTP_ERR_BAD_OPTS = 8, /**< Option negotiation failed */
+TFTP_ERR_UNABLE_TO_RESOLVE = 9, // Not in RFC, internal usage
+TFTP_ERR_UNABLE_TO_CONNECT = 10, // Not in RFC, internal usage
+TFTP_OK = 11, /* Not in RFC */
+};
+
+extern const char *tftp_string_error_message[];
+#endif