本文整理汇总了C#中System.Net.Security.SslStream.IsNullOrDefault方法的典型用法代码示例。如果您正苦于以下问题：C# SslStream.IsNullOrDefault方法的具体用法？C# SslStream.IsNullOrDefault怎么用？C# SslStream.IsNullOrDefault使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Net.Security.SslStream的用法示例。
在下文中一共展示了SslStream.IsNullOrDefault方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: _Connect
/// <summary>
/// Sets up a connection to APNS and initializes the thread for sending notifications
/// </summary>
void _Connect()
{
var configuration = ApnsServiceConfiguration.GetConfiguration ();
_certificate = new X509Certificate2 (File.ReadAllBytes (configuration.Certificate), configuration.Password,
X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
try {
if (!_connection.IsNullOrDefault ())
_connection.Close ();
#if DEBUG
NSLogger.Log (NSLogLevel.Info, "Connecting to APNS...");
#endif
_connection = new TcpClient (apnsHostName, 2195);
if (!_sslStream.IsNullOrDefault ())
_sslStream.Close ();
_sslStream = new SslStream (_connection.GetStream (), false,
new RemoteCertificateValidationCallback ((sender, cert, chain, sslPolicyErrors) => { return true; }),
new LocalCertificateSelectionCallback ((sender, targetHost, localCerts, remoteCert, acceptableIssuers) => {
return _certificate;
}));
var certificates = new X509CertificateCollection { _certificate };
_sslStream.AuthenticateAsClient (apnsHostName, certificates, SslProtocols.Ssl3, false);
if (!_sslStream.IsMutuallyAuthenticated)
throw new ApplicationException ("SSL Stream Failed to Authenticate", null);
if (!_sslStream.CanWrite)
throw new ApplicationException ("SSL Stream is not Writable", null);
#if DEBUG
NSLogger.Log (NSLogLevel.Info, "Connected!");
#endif
} catch (Exception) {
if (_connection.Connected) {
_connection.Close ();
}
if (!_sslStream.IsNullOrDefault ()) {
_sslStream.Close ();
_sslStream.Dispose ();
}
throw;
}
}