/// <summary>
/// constructor
/// </summary>
/// <param name="credential">the client credential contains the user information</param>
/// <param name="contextAttribute">the client Context Attribute</param>
/// <exception cref="ArgumentNullException">the previousContext must be null</exception>
public NlmpClientSecurityContext(NlmpClientCredential credential, ClientSecurityContextAttribute contextAttribute)
: this(credential)
{
this.contextAttribute = contextAttribute;
this.Context.Integrity = contextAttribute.HasFlag(ClientSecurityContextAttribute.Integrity);
this.Context.ReplayDetect = contextAttribute.HasFlag(ClientSecurityContextAttribute.ReplayDetect);
this.Context.SequenceDetect = contextAttribute.HasFlag(ClientSecurityContextAttribute.SequenceDetect);
this.Context.Confidentiality = contextAttribute.HasFlag(ClientSecurityContextAttribute.Confidentiality);
this.Context.Datagram = contextAttribute.HasFlag(ClientSecurityContextAttribute.Datagram);
this.Context.Identify = contextAttribute.HasFlag(ClientSecurityContextAttribute.Identify);
}