static void preconnectIfNeeded(
const LinkRelAttribute& relAttribute,
const KURL& href,
Document& document,
const CrossOriginAttributeValue crossOrigin,
const NetworkHintsInterface& networkHintsInterface,
LinkCaller caller) {
if (relAttribute.isPreconnect() && href.isValid() &&
href.protocolIsInHTTPFamily()) {
UseCounter::count(document, UseCounter::LinkRelPreconnect);
if (caller == LinkCalledFromHeader)
UseCounter::count(document, UseCounter::LinkHeaderPreconnect);
Settings* settings = document.settings();
if (settings && settings->logDnsPrefetchAndPreconnect()) {
document.addConsoleMessage(ConsoleMessage::create(
OtherMessageSource, DebugMessageLevel,
String("Preconnect triggered for ") + href.getString()));
if (crossOrigin != CrossOriginAttributeNotSet) {
document.addConsoleMessage(ConsoleMessage::create(
OtherMessageSource, DebugMessageLevel,
String("Preconnect CORS setting is ") +
String((crossOrigin == CrossOriginAttributeAnonymous)
? "anonymous"
: "use-credentials")));
}
}
networkHintsInterface.preconnectHost(href, crossOrigin);
}
}
static void dnsPrefetchIfNeeded(
const LinkRelAttribute& relAttribute,
const KURL& href,
Document& document,
const NetworkHintsInterface& networkHintsInterface,
LinkCaller caller) {
if (relAttribute.isDNSPrefetch()) {
UseCounter::count(document, UseCounter::LinkRelDnsPrefetch);
if (caller == LinkCalledFromHeader)
UseCounter::count(document, UseCounter::LinkHeaderDnsPrefetch);
Settings* settings = document.settings();
// FIXME: The href attribute of the link element can be in "//hostname"
// form, and we shouldn't attempt to complete that as URL
// <https://bugs.webkit.org/show_bug.cgi?id=48857>.
if (settings && settings->dnsPrefetchingEnabled() && href.isValid() &&
!href.isEmpty()) {
if (settings->logDnsPrefetchAndPreconnect()) {
document.addConsoleMessage(ConsoleMessage::create(
OtherMessageSource, DebugMessageLevel,
String("DNS prefetch triggered for " + href.host())));
}
networkHintsInterface.dnsPrefetchHost(href.host());
}
}
}
static void preconnectHost(PreloadRequest* request, const NetworkHintsInterface& networkHintsInterface)
{
ASSERT(request);
ASSERT(request->isPreconnect());
KURL host(request->baseURL(), request->resourceURL());
if (!host.isValid() || !host.protocolIsInHTTPFamily())
return;
networkHintsInterface.preconnectHost(host, request->crossOrigin());
}