Send HTTP request.

Basically what I am looking for is the ability to send an http request to a specific address and dispose of the returned data.

Here is the situation. We are having a major remote database problem, so in the mean time we have come up with this workaround:

1. The c app send an http request to:
www.something.com?x=something&y=something&z=something

2. The webapp takes the variables passed in the address (x,y,z) and does it's thing.

So all the c app has to do is send the page request and kill the connection.

I am not the c developer, but he is having problems doing this, so I thought I would ask the good ol' codeguru community.

Thanks in advance for any help you can provide.

Post the section of code the developer is having problems with.

Kuphryn

When in doubt check the RFC. There might be something on w3.org too.

I sent the developer over to w3.org and this is what he came up with for testing:

#include <windows.h>
#include <wininet.h>
#include <iostream>
using namespace std;


void main () {
HINTERNET hinternet, hHTTPSession, hHTTPRequest;

hinternet = InternetOpen("Request", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);

if (hinternet == NULL) {
cout << "InternetOpen() Failed - " << GetLastError() << endl;
return;
} else {
cout << "Internet session openend." << endl;
}

hHTTPSession = InternetConnect(hinternet, "www.something.com", INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);

if (hHTTPSession == NULL) {
cout << "InternetConnect() Failed - " << GetLastError() << endl;
return;
} else {
cout << "Connected to site." << endl;
}

hHTTPRequest = HttpOpenRequest(hHTTPSession, "POST", "/formtest.aspx", NULL, NULL, NULL, 0, 0);

if (hHTTPRequest == NULL) {
cout << "HttpOpenRequest() Failed - " << GetLastError() << endl;
return;
} else {
cout << "Open Request." << endl;
}

TCHAR header[] = TEXT("Content-Type: application/x-www-form-urlencoded");
TCHAR data[] = TEXT("txtsomething1=something&txtsomething2=something");

if (HttpSendRequest(hHTTPRequest, header, strlen(header), data, strlen(data))) {
cout << "Send Request successful." << endl;
} else {
cout << "HttpSendRequest() Failed - " << GetLastError() << endl;
return;
}


InternetCloseHandle(hHTTPRequest);
InternetCloseHandle(hHTTPSession);
InternetCloseHandle(hinternet);

}


That will send the request as POST'ed data to a specific page.

Thanks again for getting us going in the right direction.