public bool IsSameSession(SessionDescription sd)
{
if (sd == null)
{
return(false);
}
return(Origin.IsSameSession(sd.Origin));
}
public bool IsUpdateOf(SessionDescription sd)
{
if (sd == null)
{
return(false);
}
return(Origin.IsUpdateOf(sd.Origin));
}
public SessionAnnouncement(SessionDescription sessionDescription, NetworkInterface inter)
{
if (sessionDescription.Announcement != null)
{
throw new ArgumentException("sessionDescription");
}
SessionDescription = sessionDescription;
SessionDescription.Announcement = this;
NetworkInterface = inter;
}
public SessionAnnouncement(SessionDescription sessionDescription, NetworkInterface inter)
{
if (sessionDescription.Announcement != null)
{
throw new ArgumentException("sessionDescription");
}
SessionDescription = sessionDescription;
SessionDescription.Announcement = this;
NetworkInterface = inter;
}
public SdpSession(Origin o, NetworkInterface inter)
{
SessionDescription = new SessionDescription();
SessionDescription.Origin = o;
NetworkInterface = inter;
}
internal AttributeDictionary(SessionDescription sd)
{
SessionDescription = sd;
Media = null;
}
public bool IsUpdateOf(SessionDescription sd)
{
if (sd == null)
{
return false;
}
return Origin.IsUpdateOf(sd.Origin);
}
public bool IsSameSession(SessionDescription sd)
{
if (sd == null)
{
return false;
}
return Origin.IsSameSession(sd.Origin);
}
public static SessionDescription Load(TextReader reader, LoadOptions loadOptions)
{
SessionDescription sd = new SessionDescription(false);
Media media = null;
string line = reader.ReadLine();
while (line != null)
{
if ((line.Length == 0) && ((loadOptions & LoadOptions.IgnoreEmptyLines) != 0))
{
goto nextline;
}
if (line.Length < 3)
{
goto invalidline;
}
if (line[1] != '=')
{
goto invalidline;
}
string value = line.Substring(2);
string[] parts = null;
int sep = -1;
try
{
switch (line[0])
{
case 'v':
if (media != null)
{
goto invalidline;
}
int version = -1;
Grammar.ValidateDigits(value, false);
if (!int.TryParse(value, out version))
{
goto invalidline;
}
if ((loadOptions & LoadOptions.IgnoreUnsupportedVersion) == 0)
{
if (version != 0)
{
goto notsupported;
}
}
sd.Version = version;
break;
case 'o':
if (media != null)
{
goto invalidline;
}
sd.Origin = Origin.Parse(value);
break;
case 's':
if (media != null)
{
goto invalidline;
}
sd.Name = value;
break;
case 'i':
if (media == null)
{
sd.Information = value;
}
else
{
media.Information = value;
}
break;
case 'u':
if (media != null)
{
goto invalidline;
}
sd.Uri = new Uri(value);
break;
case 'e':
if (media != null)
{
goto invalidline;
}
sd.EMails.Add(value);
break;
case 'p':
if (media != null)
{
goto invalidline;
}
sd.PhoneNumbers.Add(value);
break;
case 'c':
if (media == null)
{
if (sd.HasConnection)
{
goto invalidline;
}
}
Connection conn = new Connection();
parts = value.Split(' ');
if (parts.Length != 3)
{
goto invalidline;
}
string networkType = parts[0];
string addressType = parts[1];
parts = parts[2].Split('/');
if (parts.Length > 3)
{
goto invalidline;
}
conn.SetAddress(networkType, addressType, parts[0]);
conn.Address = parts[0];
conn.AddressCount = 1;
if (parts.Length >= 2)
{
uint ttl = 0;
if (!uint.TryParse(parts[1], out ttl))
{
goto invalidline;
}
conn.Ttl = ttl;
if (parts.Length == 3)
{
uint addressCount = 0;
if (!uint.TryParse(parts[2], out addressCount))
{
goto invalidline;
}
conn.AddressCount = addressCount;
}
if (conn.AddressType == "IP6")
{
if (parts.Length == 3)
{
goto invalidline;
}
conn.AddressCount = conn.Ttl;
conn.Ttl = 0;
}
}
if (media != null)
{
media.Connections.Add(conn);
}
else
{
sd.Connection = conn;
}
break;
case 'b':
sep = value.IndexOf(':');
if (sep == -1)
{
goto invalidline;
}
string type = value.Substring(0, sep);
string bw = value.Substring(sep + 1);
Grammar.ValidateDigits(bw, false);
uint bwValue = 0;
if (!uint.TryParse(bw, out bwValue))
{
goto invalidline;
}
if (media != null)
{
media.Bandwidths.Add(new Bandwidth(type, bwValue));
}
else
{
sd.Bandwidths.Add(new Bandwidth(type, bwValue));
}
break;
case 'a':
sep = value.IndexOf(':');
string attrName;
string attrValue;
if (sep != -1)
{
attrName = value.Substring(0, sep);
attrValue = value.Substring(sep + 1);
}
else
{
attrName = value;
attrValue = null;
}
if (media != null)
{
media.Attributes.Add(attrName, attrValue);
}
else
{
sd.Attributes.Add(attrName, attrValue);
}
break;
case 't':
if (media != null)
{
goto invalidline;
}
parts = value.Split(' ');
if (parts.Length != 2)
{
goto invalidline;
}
Grammar.ValidateTime(parts[0]);
double startTime = 0;
if (!double.TryParse(parts[0], out startTime))
{
goto invalidline;
}
Grammar.ValidateTime(parts[1]);
double stopTime = 0;
if (!double.TryParse(parts[1], out stopTime))
{
goto invalidline;
}
DateTime startDateTime = Time.Zero;
DateTime stopDateTime = Time.Zero;
if (startTime != 0)
{
startDateTime = Time.Zero + TimeSpan.FromSeconds(startTime);
}
if (stopTime != 0)
{
stopDateTime = Time.Zero + TimeSpan.FromSeconds(stopTime);
}
sd.Times.Add(new Time(startDateTime, stopDateTime));
break;
case 'm':
parts = value.Split(' ');
if (parts.Length < 4)
{
goto invalidline;
}
string mediaType = parts[0];
string protocol = parts[2];
var formats = parts.Skip(3).ToList();
parts = parts[1].Split('/');
if (parts.Length > 2)
{
goto invalidline;
}
uint port = 0;
uint portCount = 1;
Grammar.ValidateDigits(parts[0], false);
if (!uint.TryParse(parts[0], out port))
{
goto invalidline;
}
if (parts.Length == 2)
{
Grammar.ValidateDigits(parts[1], true);
if (!uint.TryParse(parts[1], out portCount))
{
goto invalidline;
}
}
media = new Media(mediaType, port, portCount, protocol, formats);
sd.Medias.Add(media);
break;
case 'z':
case 'k':
case 'r':
if ((loadOptions & LoadOptions.IgnoreUnsupportedLines) == 0)
{
goto notsupported;
}
break;
default:
if ((loadOptions & LoadOptions.IgnoreUnknownLines) == 0)
{
goto invalidline;
}
break;
}
}
catch
{
goto invalidline;
}
nextline:
line = reader.ReadLine();
continue;
invalidline:
throw new SdpException(string.Format("Invalid Line {0}", line));
notsupported:
throw new SdpException(string.Format("Unsupported line {0}", line));
}
if (sd.Version == -1)
{
throw new SdpException("Version ('v=') is required");
}
if (!sd.HasOrigin)
{
throw new SdpException("Origin ('o=') is required");
}
if (sd.Name == null)
{
throw new SdpException("Name ('s=') is required");
}
if (!sd.HasTimes)
{
throw new SdpException("Time ('t=') is required");
}
return sd;
}
public SdpSession(Origin o, NetworkInterface inter)
{
SessionDescription = new SessionDescription();
SessionDescription.Origin = o;
NetworkInterface = inter;
}
public MediaCollection(SessionDescription sd)
{
SessionDescription = sd;
}
internal void OnSessionAnnounce(NetworkInterfaceHandler interfaceHandler, Announcement announcement)
{
lock (_sessionData)
{
AnnouncementIdentifier id = new AnnouncementIdentifier(interfaceHandler.NetworkInterface, announcement);
SessionData sessionData = null;
bool knownAnnouncement = _announcements.TryGetValue(id, out sessionData);
if (!knownAnnouncement)
{
announcement.Decompress();
Stream stream = new MemoryStream(announcement.Payload.Array, announcement.Payload.Offset, announcement.Payload.Count);
SessionDescription description = SessionDescription.Load(stream);
description.SetReadOnly();
SdpSession session = new SdpSession(description, interfaceHandler.NetworkInterface);
SessionAnnouncement sessionAnnouncement = null;
if (_sessionData.TryGetValue(session, out sessionData))
{
sessionAnnouncement = sessionData.Session;
}
if (sessionData != null)
{
if (description.IsUpdateOf(sessionAnnouncement.SessionDescription))
{
sessionAnnouncement = new SessionAnnouncement(description, interfaceHandler.NetworkInterface);
SessionAnnouncement oldAnnouncement = sessionData.Session;
sessionData.Session = sessionAnnouncement;
_announcements.Remove(sessionData.Id);
sessionData.Id = id;
SynchronizationContextPost(o =>
{
lock (Sessions)
{
Sessions.Replace(oldAnnouncement, sessionAnnouncement);
}
});
}
}
else
{
sessionAnnouncement = new SessionAnnouncement(description, interfaceHandler.NetworkInterface);
sessionData = new SessionData()
{
Session = sessionAnnouncement,
Timer = new Timer(OnTimeOut, session, System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite),
Id = id
};
_sessionData.Add(session, sessionData);
_announcements.Add(id, sessionData);
SynchronizationContextPost(o =>
{
lock (Sessions)
{
Sessions.Add(sessionAnnouncement);
}
});
}
}
sessionData.TimeOutTime = DateTime.Now + DefaultTimeOut;
sessionData.Timer.Change(DefaultTimeOut, TimeSpan.FromMilliseconds(-1));
}
}
public BandwidthCollection(SessionDescription sessionDescription)
{
SessionDescription = sessionDescription;
}
public static SessionDescription Load(TextReader reader, LoadOptions loadOptions)
{
SessionDescription sd = new SessionDescription(false);
Media media = null;
string line = reader.ReadLine();
while (line != null)
{
if ((line.Length == 0) && ((loadOptions & LoadOptions.IgnoreEmptyLines) != 0))
{
goto nextline;
}
if (line.Length < 3)
{
goto invalidline;
}
if (line[1] != '=')
{
goto invalidline;
}
string value = line.Substring(2);
string[] parts = null;
int sep = -1;
try
{
switch (line[0])
{
case 'v':
if (media != null)
{
goto invalidline;
}
int version = -1;
Grammar.ValidateDigits(value, false);
if (!int.TryParse(value, out version))
{
goto invalidline;
}
if ((loadOptions & LoadOptions.IgnoreUnsupportedVersion) == 0)
{
if (version != 0)
{
goto notsupported;
}
}
sd.Version = version;
break;
case 'o':
if (media != null)
{
goto invalidline;
}
sd.Origin = Origin.Parse(value);
break;
case 's':
if (media != null)
{
goto invalidline;
}
sd.Name = value;
break;
case 'i':
if (media == null)
{
sd.Information = value;
}
else
{
media.Information = value;
}
break;
case 'u':
if (media != null)
{
goto invalidline;
}
sd.Uri = new Uri(value);
break;
case 'e':
if (media != null)
{
goto invalidline;
}
sd.EMails.Add(value);
break;
case 'p':
if (media != null)
{
goto invalidline;
}
sd.PhoneNumbers.Add(value);
break;
case 'c':
if (media == null)
{
if (sd.HasConnection)
{
goto invalidline;
}
}
Connection conn = new Connection();
parts = value.Split(' ');
if (parts.Length != 3)
{
goto invalidline;
}
string networkType = parts[0];
string addressType = parts[1];
parts = parts[2].Split('/');
if (parts.Length > 3)
{
goto invalidline;
}
conn.SetAddress(networkType, addressType, parts[0]);
conn.Address = parts[0];
conn.AddressCount = 1;
if (parts.Length >= 2)
{
uint ttl = 0;
if (!uint.TryParse(parts[1], out ttl))
{
goto invalidline;
}
conn.Ttl = ttl;
if (parts.Length == 3)
{
uint addressCount = 0;
if (!uint.TryParse(parts[2], out addressCount))
{
goto invalidline;
}
conn.AddressCount = addressCount;
}
if (conn.AddressType == "IP6")
{
if (parts.Length == 3)
{
goto invalidline;
}
conn.AddressCount = conn.Ttl;
conn.Ttl = 0;
}
}
if (media != null)
{
media.Connections.Add(conn);
}
else
{
sd.Connection = conn;
}
break;
case 'b':
sep = value.IndexOf(':');
if (sep == -1)
{
goto invalidline;
}
string type = value.Substring(0, sep);
string bw = value.Substring(sep + 1);
Grammar.ValidateDigits(bw, false);
uint bwValue = 0;
if (!uint.TryParse(bw, out bwValue))
{
goto invalidline;
}
if (media != null)
{
media.Bandwidths.Add(new Bandwidth(type, bwValue));
}
else
{
sd.Bandwidths.Add(new Bandwidth(type, bwValue));
}
break;
case 'a':
sep = value.IndexOf(':');
string attrName;
string attrValue;
if (sep != -1)
{
attrName = value.Substring(0, sep);
attrValue = value.Substring(sep + 1);
}
else
{
attrName = value;
attrValue = null;
}
if (media != null)
{
media.Attributes.Add(attrName, attrValue);
}
else
{
sd.Attributes.Add(attrName, attrValue);
}
break;
case 't':
if (media != null)
{
goto invalidline;
}
parts = value.Split(' ');
if (parts.Length != 2)
{
goto invalidline;
}
Grammar.ValidateTime(parts[0]);
double startTime = 0;
if (!double.TryParse(parts[0], out startTime))
{
goto invalidline;
}
Grammar.ValidateTime(parts[1]);
double stopTime = 0;
if (!double.TryParse(parts[1], out stopTime))
{
goto invalidline;
}
DateTime startDateTime = Time.Zero;
DateTime stopDateTime = Time.Zero;
if (startTime != 0)
{
startDateTime = Time.Zero + TimeSpan.FromSeconds(startTime);
}
if (stopTime != 0)
{
stopDateTime = Time.Zero + TimeSpan.FromSeconds(stopTime);
}
sd.Times.Add(new Time(startDateTime, stopDateTime));
break;
case 'm':
parts = value.Split(' ');
if (parts.Length < 4)
{
goto invalidline;
}
string mediaType = parts[0];
string protocol = parts[2];
var formats = parts.Skip(3).ToList();
parts = parts[1].Split('/');
if (parts.Length > 2)
{
goto invalidline;
}
uint port = 0;
uint portCount = 1;
Grammar.ValidateDigits(parts[0], false);
if (!uint.TryParse(parts[0], out port))
{
goto invalidline;
}
if (parts.Length == 2)
{
Grammar.ValidateDigits(parts[1], true);
if (!uint.TryParse(parts[1], out portCount))
{
goto invalidline;
}
}
media = new Media(mediaType, port, portCount, protocol, formats);
sd.Medias.Add(media);
break;
case 'z':
case 'k':
case 'r':
if ((loadOptions & LoadOptions.IgnoreUnsupportedLines) == 0)
{
goto notsupported;
}
break;
default:
if ((loadOptions & LoadOptions.IgnoreUnknownLines) == 0)
{
goto invalidline;
}
break;
}
}
catch
{
goto invalidline;
}
nextline:
line = reader.ReadLine();
continue;
invalidline:
throw new SdpException(string.Format("Invalid Line {0}", line));
notsupported:
throw new SdpException(string.Format("Unsupported line {0}", line));
}
if (sd.Version == -1)
{
throw new SdpException("Version ('v=') is required");
}
if (!sd.HasOrigin)
{
throw new SdpException("Origin ('o=') is required");
}
if (sd.Name == null)
{
throw new SdpException("Name ('s=') is required");
}
if (!sd.HasTimes)
{
throw new SdpException("Time ('t=') is required");
}
return(sd);
}
public override bool Equals(object obj)
{
SessionDescription sd = obj as SessionDescription;
return(this == sd);
}
public SdpSession(SessionDescription sd, NetworkInterface inter)
{
SessionDescription = sd;
NetworkInterface = inter;
}
public TimeCollection(SessionDescription sessionDescription)
{
SessionDescription = sessionDescription;
}
internal AttributeDictionary(SessionDescription sd)
{
SessionDescription = sd;
Media = null;
}
public SdpSession(SessionDescription sd, NetworkInterface inter)
{
SessionDescription = sd;
NetworkInterface = inter;
}
public StringCollection(Type type, SessionDescription sessionDescription)
{
_type = type;
SessionDescription = sessionDescription;
}