#define WINHTTP_ERROR_BASE 12000
#define ERROR_WINHTTP_LOGIN_FAILURE (WINHTTP_ERROR_BASE + 15)
+#define ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT (WINHTTP_ERROR_BASE + 167)
#define ERROR_WINHTTP_AUTODETECTION_FAILED (WINHTTP_ERROR_BASE + 180)
QT_BEGIN_NAMESPACE
isAutoConfig = true;
memset(&autoProxyOptions, 0, sizeof autoProxyOptions);
autoProxyOptions.fAutoLogonIfChallenged = false;
+ //Although it is possible to specify dwFlags = WINHTTP_AUTOPROXY_AUTO_DETECT | WINHTTP_AUTOPROXY_CONFIG_URL
+ //this has poor performance (WPAD is attempted for every url, taking 2.5 seconds per interface,
+ //before the configured pac file is used)
if (ieProxyConfig.fAutoDetect) {
autoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_AUTO_DETECT;
autoProxyOptions.dwAutoDetectFlags = WINHTTP_AUTO_DETECT_TYPE_DHCP |
DWORD getProxyError = GetLastError();
if (!getProxySucceeded
+ && (ERROR_WINHTTP_AUTODETECTION_FAILED == getProxyError)) {
+ // WPAD failed
+ if (sp->autoConfigUrl.isEmpty()) {
+ //No config file could be retrieved on the network.
+ //Don't search for it next time again.
+ sp->isAutoConfig = false;
+ } else {
+ //pac file URL is specified as well, try using that
+ sp->autoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_CONFIG_URL;
+ sp->autoProxyOptions.lpszAutoConfigUrl = (LPCWSTR)sp->autoConfigUrl.utf16();
+ getProxySucceeded = ptrWinHttpGetProxyForUrl(sp->hHttpSession,
+ (LPCWSTR)url.toString().utf16(),
+ &sp->autoProxyOptions,
+ &proxyInfo);
+ getProxyError = GetLastError();
+ }
+ }
+
+ if (!getProxySucceeded
&& (ERROR_WINHTTP_LOGIN_FAILURE == getProxyError)) {
// We first tried without AutoLogon, because this might prevent caching the result.
// But now we've to enable it (http://msdn.microsoft.com/en-us/library/aa383153%28v=VS.85%29.aspx)
getProxyError = GetLastError();
}
+ if (!getProxySucceeded
+ && (ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT == getProxyError)) {
+ // PAC file url is not connectable, or server returned error (e.g. http 404)
+ //Don't search for it next time again.
+ sp->isAutoConfig = false;
+ }
+
if (getProxySucceeded) {
// yes, we got a config for this URL
QString proxyBypass = QString::fromWCharArray(proxyInfo.lpszProxyBypass);
return parseServerList(query, proxyServerList);
}
- // GetProxyForUrl failed
-
- if (ERROR_WINHTTP_AUTODETECTION_FAILED == getProxyError) {
- //No config file could be retrieved on the network.
- //Don't search for it next time again.
- sp->isAutoConfig = false;
- }
+ // GetProxyForUrl failed, fall back to static configuration
}
// static configuration