Question

我正在尝试使用EWS获取忙/闲我已经安装了最新的nuget包Microsoft.Exchange.WebServices

我也设置了我所知道的忽略证书的一切。错误：

    ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
    ServicePointManager.Expect100Continue = true;
    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 |  SecurityProtocolType.Ssl3;

我用来获取约会的代码：

 //Set up the service with correct credentials.
var service = new ExchangeService(ExchangeVersion.Exchange2007_SP1)
{
    Credentials = new WebCredentials(Account, Password, Domain), 
    TraceEnabled = true, 
    EnableScpLookup = false
};
service.Url = new Uri(ServiceUrl);

// Create a list of attendees.
var attendees = Contacts.Select(contact => new AttendeeInfo { SmtpAddress = contact.Email, AttendeeType = MeetingAttendeeType.Required }).ToList();

// Specify availability options.
var myOptions = new AvailabilityOptions
                {
                    MeetingDuration = 30, 
                    RequestedFreeBusyView = FreeBusyViewType.DetailedMerged,
                    DetailedSuggestionsWindow = new TimeWindow(DateTime.Now, DateTime.Now.AddDays(Days))

                };

// Return a set of free/busy times.
var freeBusyResults = service.GetUserAvailability(attendees, new TimeWindow(DateTime.Now, DateTime.Now.AddDays(Days)),AvailabilityData.FreeBusyAndSuggestions, myOptions);

此代码适用于我拥有的6台交换服务器中的5台，但其中一台提供“请求失败。请求已中止：无法创建SSL / TLS安全通道。”错误信息。

如果我设置fiddler作为呼叫的代理，并告诉fiddler解密，一切正常。

我只想忽略所有ssl错误并获取数据，我该怎么做？

Answer 1

Managed API只是使用HTTPWebRequest作为执行请求/响应的基础类。如果它与小提琴手一起工作，那么你的问题很可能与环境/客户有关。我建议您启用跟踪https://blogs.msdn.microsoft.com/dgorti/2005/09/18/using-system-net-tracing/，然后您应该能够看到失败时在较低级别发生的情况。

EWS无法创建SSL / TLS安全通道

1 个答案: