public DeserializationState ReadValue(ReadOnlySpan <byte> data, DeserializationSession session)
{
if (session.ParsedValue.Uri != null)
{
throw new DeserializationException("No more than one URI field is allowed per session description");
}
if (session.ParsedValue.MediaDescriptions != null && session.ParsedValue.MediaDescriptions.Any())
{
throw new DeserializationException($"Uri MUST be specified before the first media field");
}
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Uri field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
//uri
var uriString =
SerializationHelpers.ParseRequiredString("Uri field",
SerializationHelpers.NextRequiredField("Uri field", remainingSlice));
if (Uri.TryCreate(uriString, UriKind.RelativeOrAbsolute, out var parsedUri))
{
session.ParsedValue.Uri = parsedUri;
}
else
{
throw new DeserializationException($"Invalid Uri field value: {uriString}");
}
return(OptionalValueDeSerializer.Instance.ReadValue);
}
public EncriptionKey ReadValue(ReadOnlySpan <byte> data)
{
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Encription key field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
var encKey = new EncriptionKey();
// Type
var indexOfEnd = remainingSlice.IndexOf(SDPSerializer.ByteColon);
// Only method must be present
if (indexOfEnd == -1)
{
encKey.Method = SerializationHelpers.ParseRequiredString("Encription key field: method", remainingSlice);
return(encKey);
}
else
{
encKey.Method = SerializationHelpers.ParseRequiredString("Encription key field: method", remainingSlice.Slice(0, indexOfEnd));
encKey.Value = SerializationHelpers.ParseRequiredString("Encription key field: value", remainingSlice.Slice(indexOfEnd + 1));
}
return(encKey);
}
public ConnectionData ReadValue(ReadOnlySpan <byte> data)
{
var remainingSlice = data;
// header
SerializationHelpers.ParseRequiredHeader("Connection Data field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
var connData = new ConnectionData();
// nettype
connData.Nettype =
SerializationHelpers.ParseRequiredString("Connection Data field: nettype",
SerializationHelpers.NextRequiredDelimitedField("Connection Data field: nettype", SDPSerializer.ByteSpace, remainingSlice, out var consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// addrtype
connData.AddrType =
SerializationHelpers.ParseRequiredString("Connection Data field: addrtype",
SerializationHelpers.NextRequiredDelimitedField("Connection Data field: addrtype", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// connection-address
connData.ConnectionAddress =
SerializationHelpers.ParseRequiredString("Connection Data field: connection-address", remainingSlice);
return(connData);
}
public string ReadValue(ReadOnlySpan <byte> data)
{
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Attribute field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
var value = SerializationHelpers.ParseRequiredString("Attribute field", remainingSlice);
return(value);
}
public DeserializationState ReadValue(ReadOnlySpan <byte> data, DeserializationSession session)
{
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Origin field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
session.ParsedValue.Origin = new Origin();
//username
session.ParsedValue.Origin.UserName =
SerializationHelpers.ParseRequiredString("Origin field: username",
SerializationHelpers.NextRequiredDelimitedField("Origin field: username", SDPSerializer.ByteSpace, remainingSlice, out var consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
//sess-id
session.ParsedValue.Origin.SessionId = SerializationHelpers.ParseLong("Origin field: sess-id",
SerializationHelpers.NextRequiredDelimitedField("Origin field: sess-id", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
//sess-version
session.ParsedValue.Origin.SessionVersion = SerializationHelpers.ParseLong("Origin field: sess-version",
SerializationHelpers.NextRequiredDelimitedField("Origin field: sess-version", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
//nettype
session.ParsedValue.Origin.Nettype =
SerializationHelpers.ParseRequiredString("Origin field: nettype",
SerializationHelpers.NextRequiredDelimitedField("Origin field: nettype", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
//addrtype
session.ParsedValue.Origin.AddrType =
SerializationHelpers.ParseRequiredString("Origin field: addrtype",
SerializationHelpers.NextRequiredDelimitedField("Origin field: addrtype", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// unicast-address
session.ParsedValue.Origin.UnicastAddress =
SerializationHelpers.ParseRequiredString("Origin field: unicast-address", remainingSlice);
return(SessionNameSerializer.Instance.ReadValue);
}
public MediaDescription ReadValue(ReadOnlySpan <byte> data)
{
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Media field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
var mDescr = new MediaDescription();
// Media
mDescr.Media =
SerializationHelpers.ParseRequiredString("Media field: Media",
SerializationHelpers.NextRequiredDelimitedField("Media field: Media", SDPSerializer.ByteSpace, remainingSlice, out var consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// port
mDescr.Port =
SerializationHelpers.ParseRequiredString("Media field: Port",
SerializationHelpers.NextRequiredDelimitedField("Media field: Port", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// Proto
mDescr.Proto =
SerializationHelpers.ParseRequiredString("Media field: Proto",
SerializationHelpers.NextRequiredDelimitedField("Media field: Proto", SDPSerializer.ByteSpace, remainingSlice, out consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// fmt
if (remainingSlice.Length == 0)
{
throw new DeserializationException("Invalid Media field: fmt, expected required values");
}
else
{
mDescr.Fmts = Encoding.UTF8.GetString(remainingSlice).Split((char)SDPSerializer.ByteSpace);
}
return(mDescr);
}
public DeserializationState ReadValue(ReadOnlySpan <byte> data, DeserializationSession session)
{
if (session.ParsedValue.MediaDescriptions != null && session.ParsedValue.MediaDescriptions.Any())
{
throw new DeserializationException("Email address MUST be specified before the first media field");
}
var remainingSlice = data;
//header
SerializationHelpers.ParseRequiredHeader("Email field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
//uri
var emailString =
SerializationHelpers.ParseRequiredString("Email field",
SerializationHelpers.NextRequiredField("Email field", remainingSlice));
session.ParsedValue.EmailNumbers = session.ParsedValue.EmailNumbers ?? new List <string>();
session.ParsedValue.EmailNumbers.Add(emailString);
return(OptionalValueDeSerializer.Instance.ReadValue);
}
public Bandwidth ReadValue(ReadOnlySpan <byte> data)
{
var remainingSlice = data;
// header
SerializationHelpers.ParseRequiredHeader("Bandwith field", remainingSlice, HeaderBytes);
remainingSlice = remainingSlice.Slice(HeaderBytes.Length);
var bandwith = new Bandwidth();
// type
bandwith.Type =
SerializationHelpers.ParseRequiredString("Bandwith field: Type",
SerializationHelpers.NextRequiredDelimitedField("Bandwith field: Type", SDPSerializer.ByteColon, remainingSlice, out var consumed));
remainingSlice = remainingSlice.Slice(consumed + 1);
// value
bandwith.Value =
SerializationHelpers.ParseRequiredString("Bandwith field: value", remainingSlice);
return(bandwith);
}