(MFC) HTTP HEAD Request

Sends an HTTP HEAD request and gets the response.

Note: The response to an HTTP HEAD request is always just the response header. The reponse body is always 0 length (thus the reason it's called a "HEAD" request..)

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkHttpResponse.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;

    // If the URL uses "https://", then the connection will be TLS.
    // Otherwise it will be TCP.
    CkHttpResponse *resp = http.GetHead("https://example-code.com/");
    if (http.get_LastMethodSuccess() != true) {
        // A failure is when we don't get any response.  It could be a timeout, an inability to connect, etc.
        // For example, a "404 Not Found" response is still a response, and thus deemed success in terms of the API..
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Examine the response.
    strOut.append("Status Code = ");
    strOut.appendInt(resp->get_StatusCode());
    strOut.append("\r\n");
    strOut.append("Status Line = ");
    strOut.append(resp->statusLine());
    strOut.append("\r\n");
    strOut.append("Status Text = ");
    strOut.append(resp->statusText());
    strOut.append("\r\n");
    strOut.append("Full Response Header:");
    strOut.append("\r\n");
    strOut.append(resp->header());
    strOut.append("\r\n");
    strOut.append("----");
    strOut.append("\r\n");
    int numHeaderFields = resp->get_NumHeaderFields();
    strOut.append("Num Header Fields: ");
    strOut.appendInt(numHeaderFields);
    strOut.append("\r\n");
    int i;
    for (i = 0; i <= numHeaderFields - 1; i++) {
        strOut.append(resp->getHeaderName(i));
        strOut.append(": ");
        strOut.append(resp->getHeaderValue(i));
        strOut.append("\r\n");
    }

    delete resp;


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }