/// <summary>
/// フレームに分割してエンキューする
/// </summary>
/// <param name="op"></param>
/// <param name="bytes"></param>
public void SendFrame(WebSocketFrameOpCode op, ArraySegment <Byte> bytes)
{
lock (m_lock)
{
var headerSize = GetHeaderSize();
if ((bytes.Count + headerSize) <= m_frameSize)
{
// 分割無し
var item = GetOrCreateBuffer();
var buffer = new ByteBuffer(item);
WriteHeader(buffer, op, bytes.Count, true);
buffer.Push(bytes);
m_sender.Enqueue(buffer.Bytes);
return;
}
int payloadSize = 0;
{
//Logger.LogFormat("first: {0}/{1}", payloadSize, bytes.Count);
// 先頭バッファ
var item = GetOrCreateBuffer();
var buffer = new ByteBuffer(item);
payloadSize = item.Length - headerSize;
WriteHeader(buffer, op, payloadSize, false);
var splited = Split(bytes, payloadSize);
buffer.Push(splited.First);
m_sender.Enqueue(buffer.Bytes);
bytes = splited.Second;
}
while (bytes.Count > 0)
{
var item = GetOrCreateBuffer();
var buffer = new ByteBuffer(item);
if (bytes.Count <= payloadSize)
{
//Logger.LogFormat("fin: {0}", bytes.Count);
// last
WriteHeader(buffer, WebSocketFrameOpCode.Continuours, bytes.Count, true);
buffer.Push(bytes);
m_sender.Enqueue(buffer.Bytes);
break;
}
else
{
//Logger.LogFormat("continue: {0}", payloadSize);
// 継続
WriteHeader(buffer, WebSocketFrameOpCode.Continuours, payloadSize, false);
var splited = Split(bytes, payloadSize);
buffer.Push(splited.First);
m_sender.Enqueue(buffer.Bytes);
bytes = splited.Second;
}
}
}
}
public static void WriteHeader(ByteBuffer buffer, WebSocketFrameOpCode op, int payloadSize, bool fin)
{
Byte b0 = (Byte)(fin ? 0x80 : 0x00);
b0 |= (Byte)op;
buffer.Push(b0);
if (payloadSize < 126)
{
Byte b1 = (Byte)payloadSize;
buffer.Push(b1);
}
else if (payloadSize < UInt16.MaxValue)
{
Byte b1 = 126;
buffer.Push(b1);
var count = (UInt16)payloadSize;
// network byte order(big endian)
buffer.Push((Byte)(count >> 8));
buffer.Push((Byte)(count & 0xFF));
}
else
{
Byte b1 = 127;
buffer.Push(b1);
var count = (UInt64)payloadSize;
// network byte order(big endian)
buffer.Push((Byte)(count >> 56));
buffer.Push((Byte)(count >> 48));
buffer.Push((Byte)(count >> 40));
buffer.Push((Byte)(count >> 32));
buffer.Push((Byte)(count >> 24));
buffer.Push((Byte)(count >> 16));
buffer.Push((Byte)(count >> 8));
buffer.Push((Byte)(count & 0xFF));
}
}
public void SendFrame(WebSocketFrameOpCode op, ArraySegment <byte> bytes)
{
var sessions = Sessions;
foreach (var session in sessions)
{
try
{
session.SendFrame(op, bytes);
}
catch (ObjectDisposedException)
{
session.Dispose();
}
catch (Exception ex)
{
//session.Dispose();
Logger.Exception(ex);
}
}
}
