覆盖Exchange请求的默认User-Agent标头

Question

我正在向EWS发送请求，如下所示：

var service = new ExchangeService(exchangeVersion)
                                  {
                                      KeepAlive = true,
                                      Url = new Uri("some autodiscovery url"),
                                      Credentials = new NetworkCredential(username, password),
                                      UserAgent = "myClient"
                                  };

var subscription = service.SubscribeToPushNotifications(
                                    new[] { inboxFolderFoldeID },
                                    new Uri("some post back url"),
                                    15,
                                    null,
                                    EventType.NewMail,
                                    EventType.Created,
                                    EventType.Deleted,
                                    EventType.Modified,
                                    EventType.Moved,
                                    EventType.Copied);

但是，它会导致请求将User-Agent标头设置为myClient (ExchangeServicesClient/15.00.0913.015)，其中字符串的其余部分来自使用此默认值的EWS库。有没有办法删除标题的默认部分，只是将其作为myClient？

编辑：我可以看到EWS库似乎只是在请求中传递的值前缀：https://github.com/OfficeDev/ews-managed-api/blob/master/Core/ExchangeServiceBase.cs

Answer 1

您需要从GitHub重新编译库，因为现有变量的范围不允许您以任何其他方式更改它们。例如，您需要做的就是修改UserAgent

    public string UserAgent
    {
        get { return this.userAgent; }
        set { this.userAgent = value + " (" + ExchangeService.defaultUserAgent + ")"; }
    }

并删除前缀，然后在ExchangeService类上设置属性时，它只是您的自定义值。