| lwIP
    2.1.2
    Lightweight IP stack | 
#include <tftp_server.h>
| Data Fields | |
| void *(* | open )(const char *fname, const char *mode, u8_t write) | 
| void(* | close )(void *handle) | 
| int(* | read )(void *handle, void *buf, int bytes) | 
| int(* | write )(void *handle, struct pbuf *p) | 
TFTP context containing callback functions for TFTP transfers
| void(* tftp_context::close) (void *handle) | 
Close file handle
| handle | File handle returned by open() | 
| void*(* tftp_context::open) (const char *fname, const char *mode, u8_t write) | 
Open file for read/write.
| fname | Filename | 
| mode | Mode string from TFTP RFC 1350 (netascii, octet, mail) | 
| write | Flag indicating read (0) or write (!= 0) access | 
| int(* tftp_context::read) (void *handle, void *buf, int bytes) | 
Read from file
| handle | File handle returned by open() | 
| buf | Target buffer to copy read data to | 
| bytes | Number of bytes to copy to buf | 
| int(* tftp_context::write) (void *handle, struct pbuf *p) | 
Write to file
| handle | File handle returned by open() | 
| pbuf | PBUF adjusted such that payload pointer points to the beginning of write data. In other words, TFTP headers are stripped off. |