WebCore/loader/PingLoader.cpp

/*
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#include "config.h"
#include "PingLoader.h"

#include "Frame.h"
#include "ResourceHandle.h"
#include "SecurityOrigin.h"
#include <wtf/OwnPtr.h>
#include <wtf/UnusedParam.h>

namespace WebCore {

void PingLoader::loadImage(Frame* frame, const KURL& url)
{
    if (!frame->document()->securityOrigin()->canDisplay(url)) {
        FrameLoader::reportLocalLoadFailed(frame, url);
        return;
    }

    ResourceRequest request(url);
    request.setTargetType(ResourceRequest::TargetIsImage);
    request.setHTTPHeaderField("Cache-Control", "max-age=0");
    if (!SecurityOrigin::shouldHideReferrer(request.url(), frame->loader()->outgoingReferrer()))
        request.setHTTPReferrer(frame->loader()->outgoingReferrer());
    frame->loader()->addExtraFieldsToSubresourceRequest(request);
    OwnPtr<PingLoader> pingLoader = adoptPtr(new PingLoader(frame, request));
    
    // Leak the ping loader, since it will kill itself as soon as it receives a response.
    PingLoader* leakedPingLoader = pingLoader.leakPtr();
    UNUSED_PARAM(leakedPingLoader);
}

PingLoader::PingLoader(Frame* frame, const ResourceRequest& request)
{
    m_handle = ResourceHandle::create(frame->loader()->networkingContext(), request, this, false, false);
}

PingLoader::~PingLoader()
{
    m_handle->cancel();
}

}