(Unicode C++) Get Response Header for Method that does not Return HttpResponse Object

Demonstrates how to get the response header and individual response header fields for a method that does not return an HTTP response object. (If a method returns an HHTTP response object, then the response header information should be obtained from the response object.)

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#include <CkHttpW.h>
#include <CkMimeW.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttpW http;

    const wchar_t *strHtml = http.quickGetStr(L"https://www.duckduckgo.com/");
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    wprintf(L"%s\n",http.lastResponseHeader());

    // Here's a sample HTTP response header:

    // Server: nginx
    // Date: Wed, 30 Sep 2020 13:13:02 GMT
    // Content-Type: text/html; charset=UTF-8
    // Transfer-Encoding: chunked
    // Connection: keep-alive
    // Vary: Accept-Encoding
    // ETag: W/"5f7371f4-1683"
    // Strict-Transport-Security: max-age=31536000
    // X-Frame-Options: SAMEORIGIN
    // Content-Security-Policy: default-src https: blob: data: 'unsafe-inline' 'unsafe-eval'; frame-ancestors 'self'
    // X-XSS-Protection: 1;mode=block
    // X-Content-Type-Options: nosniff
    // Referrer-Policy: origin
    // Expect-CT: max-age=0
    // Expires: Wed, 30 Sep 2020 13:13:01 GMT
    // Cache-Control: no-cache
    // Content-Encoding: gzip

    // We can load it into a Chilkat MIME object to get header field values:
    CkMimeW mime;

    bool success = mime.LoadMime(http.lastResponseHeader());
    if (success == false) {
        wprintf(L"%s\n",mime.lastErrorText());
        return;
    }

    // Get MIME header field values using Chilkat MIME...
    wprintf(L"----\n");
    wprintf(L"ETag: %s\n",mime.getHeaderField(L"ETag"));
    }