public bool Connect()
{
PingReply pingReply = null;
try
{
pingReply = new Ping().Send("live.bilibili.com");
}
catch (Exception)
{
}
if (pingReply == null || pingReply.Status != IPStatus.Success)
{
ConnectionFailed?.Invoke("网络连接失败");
return(false);
}
DanmakuServer danmakuServer = GetDanmakuServer(RoomId);
if (danmakuServer == null)
{
return(false);
}
switch (Protocol)
{
case Protocols.Tcp:
DanmakuTcpClient = GetTcpConnection(danmakuServer);
Stream stream = DanmakuTcpClient.GetStream();
stream.ReadTimeout = 30 * 1000 + 1000;
stream.WriteTimeout = 30 * 1000 + 1000;
PackReader = new BiliPackReader(stream);
PackWriter = new BiliPackWriter(stream);
break;
case Protocols.Ws:
DanmakuWebSocket = GetWsConnection(danmakuServer);
PackReader = new BiliPackReader(DanmakuWebSocket);
PackWriter = new BiliPackWriter(DanmakuWebSocket);
break;
case Protocols.Wss:
DanmakuWebSocket = GetWssConnection(danmakuServer);
PackReader = new BiliPackReader(DanmakuWebSocket);
PackWriter = new BiliPackWriter(DanmakuWebSocket);
break;
}
if (!InitConnection(danmakuServer))
{
Disconnect();
return(false);
}
StartEventListener();
StartHeartbeatSender();
Connected?.Invoke();
return(true);
}
public IPack[] ReadPacksAsync()
{
if (BaseWebSocket != null)
{
ArraySegment <byte> buffer = new ArraySegment <byte>(new byte[4096]);
WebSocketReceiveResult webSocketReceiveResult = BaseWebSocket.ReceiveAsync(buffer, CancellationToken.None).GetAwaiter().GetResult();
BaseStream.Position = 0;
BaseStream.Write(buffer.Array, 0, webSocketReceiveResult.Count);
BaseStream.Position = 0;
}
// Pack length (4)
byte[] packLengthBuffer = ReadTcpStream(BaseStream, 4);
int packLength = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(packLengthBuffer, 0));
if (packLength < 16)
{
BaseStream.Flush();
// TODO : 包长度过短
throw new Exception();
}
// Header length (2)
byte[] headerLengthBuffer = ReadTcpStream(BaseStream, 2);
int headerLength = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(headerLengthBuffer, 0));
if (headerLength != 16)
{
BaseStream.Flush();
// TODO : 头部长度异常
throw new Exception();
}
// Data type (2)
byte[] dataTypeBuffer = ReadTcpStream(BaseStream, 2);
int dataTypeCode = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(dataTypeBuffer, 0));
DataTypes dataType;
if (Enum.IsDefined(typeof(DataTypes), dataTypeCode))
{
dataType = (DataTypes)Enum.ToObject(typeof(DataTypes), dataTypeCode);
}
else
{
dataType = DataTypes.Unknow;
}
// Read pack type (4)
byte[] packTypeBuffer = ReadTcpStream(BaseStream, 4);
int packTypeCode = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(packTypeBuffer, 0));
PackTypes packType;
if (Enum.IsDefined(typeof(PackTypes), packTypeCode))
{
packType = (PackTypes)Enum.ToObject(typeof(PackTypes), packTypeCode);
}
else
{
packType = PackTypes.Unknow;
}
// Read split (4)
byte[] splitBuffer = ReadTcpStream(BaseStream, 4);
// Read payload
int payloadLength = packLength - headerLength;
byte[] payloadBuffer = ReadTcpStream(BaseStream, payloadLength);
// Return
switch (dataType)
{
case DataTypes.Plain:
switch (packType)
{
case PackTypes.Command:
return(new CommandPack[] { new CommandPack(payloadBuffer) });
default:
// TODO : 未知包类型
throw new Exception();
}
case DataTypes.Bin:
switch (packType)
{
case PackTypes.Popularity:
return(new PopularityPack[] { new PopularityPack(payloadBuffer) });
case PackTypes.Heartbeat:
return(new HeartbeatPack[] { new HeartbeatPack(payloadBuffer) });
default:
// TODO : 未知包类型
throw new Exception();
}
case DataTypes.Gz:
List <IPack> packs = new List <IPack>();
using (MemoryStream compressedStream = new MemoryStream(payloadBuffer))
{
using (GZipStream gZipStream = new GZipStream(compressedStream, CompressionMode.Decompress))
{
using (MemoryStream decompressedStream = new MemoryStream())
{
gZipStream.CopyTo(decompressedStream);
decompressedStream.Position = 0;
while (decompressedStream.Position != decompressedStream.Length)
{
IPack[] innerPackes = new BiliPackReader(decompressedStream).ReadPacksAsync();
packs.AddRange(innerPackes);
}
}
}
}
return(packs.ToArray());
default:
// TODO : 未知数据类型
throw new Exception();
}
}