Brent

could someone show me how to send .zip files over a connection using winsock? thanks for the help.

uman

the same way you send anything else.

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DaWei

Binary data is just a series of bits, some in one state and some in another. You can't tell what the content is just by looking. The meaning of any data is established by external agreement and convention. A file with the extension, ".exe", is presumed to be a Windows executable file, but I can rename an Excel spreadsheet to that if I like. It probably won't do anything useful. Besides, there are other conventions internal to a file that Windows will examine before attempting to execute it. These conventions are USUALLY sufficient to establish the credentials of a file, but it isn't a done deal. A lot of file types have a "magic number" in the first couple of bytes, but it's certainly not impossible (or even greatly improbable) for the first two bytes of a file of random data to contain that pattern.

All this is the reason that lots of data transfer mechanisms wrap the information inside a protocol (sometimes, layers of protocols). It's just another convention that increases the probability that you interpret the data correctly and, sometimes, without error.

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Brent

can i just send the filename over the connection, or do i have to open the file read the data and send that over the connection?

Cerulean

Uh, depends entirely on whether the two computers are on the same workgroup. If they are and the file you want to send is available through it, you can just send the filename and modify the filename slightly on the receiving box so it can read the file from that. Or something, I think.
Otherwise, you read the file and send it over. Before you do that, though, send the length of the data in the file over the second computer, so that when you have finished sending the data over the second computer can check to see if it's got the correct amount of data (and so more or less a simple way of checking whether the file was sent correctly).

Dizzutch

http://www.ecst.csuchico.edu/~beej/guide/net/
This is your bible, print it, read it, and sleep with it under your pillow.
-Dizz

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Brent

ok thanks