/// <summary>
/// Constructs a MappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="attribute">Base StunAttribute used to construct this specialized attribute</param>
public ErrorCode(StunAttribute attribute)
: base(StunAttributeType.ErrorCode, attribute.Value)
{
if (attribute.Type != StunAttributeType.ErrorCode)
{
throw new ArgumentException("is not a valid ERROR-CODE attribute", "attribute");
}
}
public static bool TryParse(StunAttribute attribute, out StunMappedAddressAttribute result)
{
result = new StunMappedAddressAttribute();
if (attribute.Type != StunAttributeType.MappedAddress)
{
return(false);
}
if (!StunIPEndPoint.TryParse(attribute.Content, out var stunEndPoint))
{
return(false);
}
result = new StunMappedAddressAttribute(stunEndPoint);
return(true);
}
public void InitializeAttributeList()
{
var firstAttribute = new StunAttribute(StunAttributeType.ChangedAddress, new byte[] { 1, 2, 3 });
var secondAttribute = new StunAttribute(StunAttributeType.MappedAddress, new byte[] { 4, 5, 6 });
var message = new StunBuilderStep().AddAttributes(new StunAttribute[] { firstAttribute, secondAttribute })
.Build();
var result = StunMessage.TryParse(message, out var parsedMessage);
var parsedAttributes = parsedMessage.Attributes.GetEnumerator();
Assert.True(result);
Assert.True(parsedAttributes.MoveNext());
Assert.Equal(firstAttribute.Type, parsedAttributes.Current.Type);
Assert.True(firstAttribute.Content.Span.SequenceEqual(parsedAttributes.Current.Content.Span));
Assert.True(parsedAttributes.MoveNext());
Assert.Equal(secondAttribute.Type, parsedAttributes.Current.Type);
Assert.True(secondAttribute.Content.Span.SequenceEqual(parsedAttributes.Current.Content.Span));
}
/// <summary>
/// Constructs a UnknownAttributes based on an existing StunAttribute
/// </summary>
/// <param name="attribute">The StunAttribute base for this UnknownAttributes</param>
public UnknownAttributes(StunAttribute attribute)
: base(StunAttributeType.UnknownAttributes, attribute.Value)
{
if (attribute.Type != StunAttributeType.UnknownAttributes)
throw new ArgumentException("is not a valid UNKNOWN-ATTRIBUTES attribute", "attribute");
Int32 offset = 0;
while (offset < this.ValueLength)
{
byte[] unknownAttrBytes = StunUtilities.SubArray(this.Value, offset, 2);
UInt16 unknownAttrValue = StunUtilities.ReverseBytes(BitConverter.ToUInt16(unknownAttrBytes, 0));
this.attributes.Add(unknownAttrValue);
offset += 2;
}
}
/// <summary>
/// Constructs a UnknownAttributes based on an existing StunAttribute
/// </summary>
/// <param name="attribute">The StunAttribute base for this UnknownAttributes</param>
public UnknownAttributes(StunAttribute attribute)
: base(StunAttributeType.UnknownAttributes, attribute.Value)
{
if (attribute.Type != StunAttributeType.UnknownAttributes)
{
throw new ArgumentException("is not a valid UNKNOWN-ATTRIBUTES attribute", "attribute");
}
Int32 offset = 0;
while (offset < this.ValueLength)
{
byte[] unknownAttrBytes = StunUtilities.SubArray(this.Value, offset, 2);
UInt16 unknownAttrValue = StunUtilities.ReverseBytes(BitConverter.ToUInt16(unknownAttrBytes, 0));
this.attributes.Add(unknownAttrValue);
offset += 2;
}
}
/// <summary>
/// Constructs an HexAttribute based on an existing StunAttribute
/// </summary>
/// <param name="attribute">The StunAttribute base for this HexAttribute</param>
public HexAttribute(StunAttributeType type, StunAttribute attribute)
: base(type, attribute.Value)
{
}
/// <summary>
/// Constructs a MappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="attribute">Base StunAttribute used to construct this specialized attribute</param>
public ErrorCode(StunAttribute attribute)
: base(StunAttributeType.ErrorCode, attribute.Value)
{
if (attribute.Type != StunAttributeType.ErrorCode)
throw new ArgumentException("is not a valid ERROR-CODE attribute", "attribute");
}
/// <summary>
/// Constructs a XorMappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="type">The StunAttributeType associated with the attribute parameter</param>
/// <param name="attribute">The StunAttribute base for this XorMappedAddress</param>
/// <param name="transactionID">
/// The transaction ID of the message from where the attribute parameter originates
/// It may be used by this XorMappedAddress to decode an IPV6 address
/// </param>
public XorMappedAddress(StunAttributeType type, StunAttribute attribute, byte[] transactionID)
: base(type, attribute)
{
this.TransactionID = transactionID;
}
/// <summary>
/// Constructs a MappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="type">The StunAttributeType associated with the attribute parameter</param>
/// <param name="attribute">The StunAttribute base for this MappedAddress</param>
public MappedAddress(StunAttributeType type, StunAttribute attribute)
: base(type, attribute.Value)
{ }
/// <summary>
/// Constructs an HexAttribute based on an existing StunAttribute
/// </summary>
/// <param name="attribute">The StunAttribute base for this HexAttribute</param>
public HexAttribute(StunAttributeType type, StunAttribute attribute)
: base(type, attribute.Value)
{ }
/// <summary>
/// Constructs a XorMappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="type">The StunAttributeType associated with the attribute parameter</param>
/// <param name="attribute">The StunAttribute base for this XorMappedAddress</param>
/// <param name="transactionID">
/// The transaction ID of the message from where the attribute parameter originates
/// It may be used by this XorMappedAddress to decode an IPV6 address
/// </param>
public XorMappedAddress(StunAttributeType type, StunAttribute attribute, byte[] transactionID)
: base(type, attribute)
{
this.TransactionID = transactionID;
}
/// <summary>
/// Constructs a MappedAddress based on an existing StunAttribute
/// </summary>
/// <param name="type">The StunAttributeType associated with the attribute parameter</param>
/// <param name="attribute">The StunAttribute base for this MappedAddress</param>
public MappedAddress(StunAttributeType type, StunAttribute attribute)
: base(type, attribute.Value)
{
}
