how to send file with qt c++?

i would like to make a program which able to send file over internet like skype does.
i dont know how to divide a big file to small packet and do crc checking also.
pls post any related source code or link to me.
thx a lot.

Any details? What protocol?

the file can be any picture, text file ect...
protocol = tcpip

sry i dont understand wat ur detail means by.....

Take a look at Fortune Server and Fortune Client examples that come with Qt. I think they have what you need.

thx a lot wysota,
now i manage to send a small text file with tcpip, but i still face some problem....
1. if the file is quite big, how to divide it to smaller packet in sender program?
2. how to do crc checking?

Quote:

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Originally Posted by wei243

1. if the file is quite big, how to divide it to smaller packet in sender program?
2. how to do crc checking?

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TCP/IP wil do both things for you. Just write your file to the socket and read it on the other end.