public override void WritePacketHeader(Stream stream, AmfHeaderDescriptor descriptor)
{
var writer = new AmfStreamWriter(stream);
WriteUtf8(writer, descriptor.Name);
writer.Write((byte)(descriptor.MustUnderstand ? 1 : 0));
writer.Write(-1);
}
public override sealed AmfHeaderDescriptor ReadPacketHeader(Stream stream)
{
var reader = new AmfStreamReader(stream);
var context = CreateDefaultContext();
try
{
var descriptor = new AmfHeaderDescriptor
{
Name = ReadString(reader),
MustUnderstand = reader.ReadBoolean()
};
reader.ReadInt32(); //Header length
context.ResetReferences();
return descriptor;
}
catch (Exception e)
{
throw new FormatException(Errors.Amf0Deserializer_ReadPacketHeaders_InvalidFormat, e);
}
}
/// <summary>
/// Encode an AMF packet from an AMFX format.
/// </summary>
/// <exception cref="FormatException">Error during encoding.</exception>
public void Encode(Stream stream, XmlReader input)
{
if (stream == null) throw new ArgumentNullException("stream");
if (!stream.CanWrite) throw new ArgumentException(Errors.AmfPacketWriter_Write_StreamNotWriteable, "stream");
if (input == null) throw new ArgumentNullException("input");
try
{
#region Encode data
var encoder = CreateEncoder(_options);
var amfStreamWriter = new AmfStreamWriter(stream);
WriteAmfVersion(amfStreamWriter, _options.AmfVersion);
input.MoveToContent();
var headerCount = Convert.ToInt32(input.GetAttribute(AmfxContent.PacketHeaderCount));
var bodyCount = Convert.ToInt32(input.GetAttribute(AmfxContent.PacketBodyCount));
while (input.Read())
{
if (input.NodeType != XmlNodeType.Element) continue;
if (headerCount != -1)
{
WriteHeaderCount(amfStreamWriter, headerCount);
headerCount = -1;
}
#region Read packet header
if (input.Name == AmfxContent.PacketHeader)
{
var header = new AmfHeaderDescriptor
{
Name = input.GetAttribute(AmfxContent.PacketHeaderName),
MustUnderstand =
(input.GetAttribute(AmfxContent.PacketHeaderMustUnderstand) ==
AmfxContent.True)
};
encoder.WritePacketHeader(stream, header);
while (input.Read())
{
//Skip until header content is found, if any
if (input.NodeType != XmlNodeType.Element || input.Name == AmfxContent.PacketHeader)
continue;
encoder.Encode(stream, input);
break;
}
continue;
}
#endregion
if (bodyCount != -1)
{
WriteMessageCount(amfStreamWriter, bodyCount);
bodyCount = -1;
}
#region Read packet body
if (input.Name == AmfxContent.PacketBody)
{
var message = new AmfMessageDescriptor
{
Target = input.GetAttribute(AmfxContent.PacketBodyTarget),
Response = input.GetAttribute(AmfxContent.PacketBodyResponse)
};
encoder.WritePacketBody(stream, message);
while (input.Read())
{
//Skip until body content is found, if any
if (input.NodeType != XmlNodeType.Element || input.Name == AmfxContent.PacketBody)
continue;
encoder.Encode(stream, input);
break;
}
continue;
}
#endregion
}
#endregion
}
catch (Exception e)
{
throw new FormatException(Errors.AmfPacketReader_DecodingError, e);
}
}
public abstract void WritePacketHeader(Stream stream, AmfHeaderDescriptor descriptor);
