private static unsafe Uri SafeDetectAutoProxyUrl(
UnsafeNclNativeMethods.WinHttp.AutoDetectType discoveryMethod)
{
Uri autoProxy = null;
#if !FEATURE_PAL
string url = null;
GlobalLog.Print("NetWebProxyFinder::SafeDetectAutoProxyUrl() Using WinHttp.");
SafeGlobalFree autoProxyUrl;
bool success = UnsafeNclNativeMethods.WinHttp.WinHttpDetectAutoProxyConfigUrl(discoveryMethod, out autoProxyUrl);
if (!success)
{
if (autoProxyUrl != null)
{
autoProxyUrl.SetHandleAsInvalid();
}
}
else
{
url = new string((char *)autoProxyUrl.DangerousGetHandle());
autoProxyUrl.Close();
}
if (url != null)
{
bool parsed = Uri.TryCreate(url, UriKind.Absolute, out autoProxy);
if (!parsed)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_proxy_autodetect_script_location_parse_error, ValidationHelper.ToString(url)));
}
GlobalLog.Print("NetWebProxyFinder::SafeDetectAutoProxyUrl() Uri.TryParse() failed url:" + ValidationHelper.ToString(url));
}
}
else
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_proxy_autodetect_failed));
}
GlobalLog.Print("NetWebProxyFinder::SafeDetectAutoProxyUrl() DetectAutoProxyUrl() returned false");
}
#endif // !FEATURE_PAL
return(autoProxy);
}
private static unsafe Uri SafeDetectAutoProxyUrl(UnsafeNclNativeMethods.WinHttp.AutoDetectType discoveryMethod)
{
Uri result = null;
string uriString = null;
if (ComNetOS.IsWinHttp51)
{
SafeGlobalFree free;
if (!UnsafeNclNativeMethods.WinHttp.WinHttpDetectAutoProxyConfigUrl(discoveryMethod, out free))
{
if (free != null)
{
free.SetHandleAsInvalid();
}
}
else
{
uriString = new string((char *)free.DangerousGetHandle());
free.Close();
}
}
else
{
StringBuilder autoProxyUrl = new StringBuilder(0x80a);
if (UnsafeNclNativeMethods.WinInet.DetectAutoProxyUrl(autoProxyUrl, 0x80a, (int)discoveryMethod))
{
uriString = autoProxyUrl.ToString();
}
}
if (uriString == null)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString("net_log_proxy_autodetect_failed"));
}
return(result);
}
if (!Uri.TryCreate(uriString, UriKind.Absolute, out result) && Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString("net_log_proxy_autodetect_script_location_parse_error", new object[] { ValidationHelper.ToString(uriString) }));
}
return(result);
}
