// Token: 0x06000073 RID: 115 RVA: 0x00004148 File Offset: 0x00002348
public static CallerRequestedCapabilities GetInstance(HttpContext requestHttpContext)
{
if (requestHttpContext == null)
{
throw new ArgumentNullException("requestHttpContext", "You must call this GetInstance method only in the cases where an HttpContext is available");
}
Version requestingClientVersion = null;
Version windowsVersion = null;
string text = Common.SafeGetUserAgent(requestHttpContext.Request);
bool canFollowRedirect = !AutodiscoverProxy.CanRedirectOutlookClient(text);
bool canHandleExHttpNodesInResponse = UserAgentHelper.IsWindowsClient(text);
bool flag = UserAgentHelper.ValidateClientSoftwareVersions(text, delegate(int major, int minor)
{
windowsVersion = new Version(major, minor);
return(true);
}, delegate(int major, int minor, int buildMajor)
{
requestingClientVersion = new Version(major, minor, buildMajor, 0);
return(true);
}) && windowsVersion != null && requestingClientVersion != null;
bool isCallerCrossForestAvailabilityService = !string.IsNullOrWhiteSpace(text) && text.StartsWith("ASAutoDiscover/CrossForest", StringComparison.OrdinalIgnoreCase) && requestHttpContext.User != null && requestHttpContext.User.Identity is ExternalIdentity;
bool flag2 = flag && UserAgentHelper.IsClientWin7OrGreater(text);
bool flag3 = false;
bool flag4 = false;
if (flag2 && CallerRequestedCapabilities.CheckIfClientSupportsNegotiate(requestingClientVersion, out flag3))
{
flag4 = true;
}
OptInCapabilities optInCapabilities;
if (CallerRequestedCapabilities.TryParseOptInCapabillitiesHeader(requestHttpContext, out optInCapabilities))
{
if ((optInCapabilities & OptInCapabilities.Negotiate) != OptInCapabilities.None)
{
flag4 = true;
}
if ((optInCapabilities & OptInCapabilities.ExHttpInfo) != OptInCapabilities.None)
{
canHandleExHttpNodesInResponse = true;
}
}
return(new CallerRequestedCapabilities(canFollowRedirect, canHandleExHttpNodesInResponse, requestingClientVersion, isCallerCrossForestAvailabilityService, flag2, flag4, flag4 && flag3));
}