I need to write all data from a file of a large size into TFTP data packets(512 bytes) in C++. I am aware that the following criteria is required for successful file transmission between a client and server.
TFTP supports five types of packets, all of which have been mentioned below:
opcode operation
1 Read request (RRQ)
2 Write request (WRQ)
3 Data (DATA)
4 Acknowledgment (ACK)
5 Error (ERROR)
The TFTP header of a packet contains the opcode associated with that packet.
2 bytes string 1 byte string 1 byte
------------------------------------------------
| Opcode | Filename | 0 | Mode | 0 |
How can I generate such a packet protocol(i.e. specify headers and opcodes) in C++ in the simplest way possible? I have searched everywhere online and cannot find a helpful solution in C++ or C. Also, should I use UDP?
You maybe can take a look at:
http://sourceforge.net/projects/tftp/
There is a small implementation of server and client part of the tftp protocol. It is written in C but for your usage it seems ok.
Hint: Requesting for "search a library" here is off topic!