Subj : Re: Little problem with C program
To   : comp.programming
From : Phlip
Date : Sun Aug 28 2005 08:58 pm

Elekaj wrote:

> This is my problem, the function listed under this text does'nt seems to 
> work correctly.

Dude, I was just looking for C-style code to ping one web page or return an 
error. Thanks!

> printf("Sending request : %s\n",request);
> send(cddbSocket,&request,sizeof(request),0);

You need to learn more C before coding hard things in it. For example, 
'sizeof request' returns the size of a pointer, not the length of the 
pointed-to string. Use strlen().

   send(cddbSocket, request, strlen(request),0);

And request has no &.

(Then consider using a softer language, like Ruby, which comes with 
libraries that handle raw HTTP, so you can skip ahead to actually doing what 
you need to do with HTTP.)

I used this tutorial to get your snip working:

http://www.codeproject.com/internet/winsockintro02.asp

> When I call the function requestHTTP("80","192.168.0.1","GET\n"), the 
> function works fine until the read command (on the screen, there are the 
> message "Reading response ..." and nothing else appens.

You need to use recv(), to await and receive bytes. I think "read()" is for 
other situations where you already have the bytes and just need to pull them 
out of the socket's internal buffer.

So I added WSAStartup(), and got stuff working with this loop:

printf("Sending request : %s\n",request);

sprintf(response,"GET %s\r\n\r\n",request);
send(cddbSocket,response,strlen(response),0);

printf("Reading response ...\n");

int y;

while(y=recv(cddbSocket,response, sizeof response,0))
{
    puts (response);
}

That system puts the GET inside the function, so I call it like this:

requestHTTP("8888", "localhost", "/FrontPage")

Note the /. HTTP will kack for no reason without it.

-- 
  Phlip
  http://www.greencheese.org/ZeekLand  <-- NOT a blog!!!

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