send and recive

Got a question in regards to reciving files from a remote site.

Code:

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  // connect to remote site - ok!

  char buf[1024];

  char *msg = "GET / HTTP/1.0 \n\n";

  int count = send(socketfd, msg, strlen(msg), 0);
       
  count = recv(socketfd, buf, sizeof(buf),0);

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The above code connects to a specific web server and ask for index.html file on the remote site - this works. The data is placed in the char array which is fine, but is this the best way of going about this ? 1024 Bytes is hardly enough to store a html file and I assume making a char buf[100240]; also is overkill. Is there a better method of storing the data ?

Thanks for any input :)

How about a temporary file?

Also, I presume you know one call to recv() isn't guaranteed to get you everything the remote server sends you?

Quote:

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Originally posted by Hammer
How about a temporary file?

Can I place the data directly into a file in the recv call or must I fist store it in a char buf[] and then copy it into a temp file ?


Also, I presume you know one call to recv() isn't guaranteed to get you everything the remote server sends you?

Yes, Im aware of that.

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Thanks for your response.

You:
>must first store it in a char buf[] and then copy it into a temp file.
So after a successful recv(), call an appropriate write function, then go back and recv() some more.

At some point, you'll want to display the data (on the screen, I presume), you might want to wait until the transmission is complete, or you can display a partial file. It's up to you :)

Thanks for your response Hammer.

Tryed adding a fstream object to my code (Making a mfc app in visual c++).

Code:

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#include <iostream.h>
#include <fstream.h>

// code

std::fstream file;

//code

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I then get the following errors :
'std' : is not a class or namespace name
'fstream' : undeclared identifier

The code works fine apart from the std::fstream file; statment.

For the headers, use this:
#include <iostream>
#include <fstream>

Thanks, fixed the problem.