Programming

Hi I need to transfer a whole file between a client ad a server. How can I do that?
Using read and write whit sockets I have problem with buffer size of both client and server. I tried to send the number of blocks(Filesize / Buffersize) and start transfer sending block by block, but what if I don't know the receiving buffer size? Is there a more "elgant" way to do this?
Thanx in advance!

You are writing your own transfer client/server, so you have to set up some sort of protocol for transferring data.

You could do this as per your preferences; I suggest the following:

when client connects, send recv. block size to server; then server will read a max of those many bytes when reading a file. When server starts sending data, the first x bytes (x can be chosen by you) will be the number of bytes that are gonna be sent by the server to the client, so that the client knows how many bytes to expect and can throw an error if less than that is received. And have the client send an ACK byte or and ACK message to the server upon successful transfer and a NACK byte or message if there is an error during transfer.

Hope this helps!

Cheers!

Ok, actually I did some error but now it works.
Thanks!!!

hi
i wrote client server programs for file transfer.
it copies the sent file content on a file ,created on client side.
but additionaly it stored some garbage text at the end...which also increased the size of the file.
how can i get actual file content?

thanks

For new questions it is best to make new threads, instead of bumping unrelated 4-year-old threads whose posters may be long gone.

If extra data is being written, you need to be more careful to write only the same number of bytes that you read from the socket. If you could post source code, we might be able to show you where this mistake is happening.