async Task SendLoopAsync()
{
try
{
CancellationToken cancel = this.GrandCancel;
LocalTimer timer = new LocalTimer();
long nextPingTick = timer.AddTimeout(0);
while (true)
{
await LowerStream.WaitReadyToSendAsync(cancel, Timeout.Infinite);
await UpperStream.WaitReadyToReceiveAsync(cancel, timer.GetNextInterval(), noTimeoutException : true, cancelEvent : this.SendPongEvent);
MemoryBuffer <byte> sendBuffer = new MemoryBuffer <byte>();
IReadOnlyList <ReadOnlyMemory <byte> > userDataList = UpperStream.FastReceiveNonBlock(out int totalRecvSize, maxSize: Options.MaxBufferSize);
if (totalRecvSize >= 1)
{
// Send data
if (Options.RespectMessageDelimiter == false)
{
userDataList = Util.DefragmentMemoryArrays(userDataList, Options.SendSingleFragmentSize);
}
foreach (ReadOnlyMemory <byte> userData in userDataList)
{
if (userData.Length >= 1)
{
BuildAndAppendFrame(sendBuffer, true, WebSocketOpcode.Bin, userData);
}
}
}
if (timer.Now >= nextPingTick)
{
// Send ping
nextPingTick = timer.AddTimeout(Util.GenRandInterval(Options.SendPingInterval));
BuildAndAppendFrame(sendBuffer, true, WebSocketOpcode.Ping, "[WebSocketPing]"._GetBytes_Ascii());
}
lock (this.PongQueueLock)
{
// Send pong
while (true)
{
if (this.PongQueue.TryDequeue(out ReadOnlyMemory <byte> data) == false)
{
break;
}
BuildAndAppendFrame(sendBuffer, true, WebSocketOpcode.Pong, data);
}
}
if (sendBuffer.Length >= 1)
{
LowerStream.FastSendNonBlock(sendBuffer.Memory);
}
}
}
catch (Exception ex)
{
this.UpperStream.Disconnect();
this.Cancel(ex);
}
}
async Task SendLoopAsync(int keepaliveInterval)
{
try
{
CancellationToken cancel = this.GrandCancel;
LocalTimer timer = new LocalTimer();
long nextPingTick = timer.AddTimeout(0);
bool initialFourZeroSent = false;
bool localFlag_C2S_SwitchToWebSocket_Requested = false;
while (true)
{
MemoryBuffer <byte> sendBuffer = new MemoryBuffer <byte>();
if (initialFourZeroSent == false)
{
// 最初の 0x00000000 (4 バイト) を送信
initialFourZeroSent = true;
sendBuffer.WriteSInt32(4);
sendBuffer.WriteSInt32(0x00000000);
}
// 上位ストリームからのデータを送信
IReadOnlyList <ReadOnlyMemory <byte> > userDataList = UpperStream.FastReceiveNonBlock(out int totalSendSize, maxSize: Consts.WideTunnelConsts.MaxBlockSize);
if (totalSendSize >= 1)
{
// Send data
foreach (var mem in userDataList)
{
//$"Send: {mem.Length}"._Debug();
//$"SendData: {mem._GetHexString()}"._Debug();
sendBuffer.WriteSInt32(mem.Length);
sendBuffer.Write(mem);
}
}
if (timer.Now >= nextPingTick)
{
// Send ping
sendBuffer.WriteSInt32(0);
nextPingTick = timer.AddTimeout(Util.GenRandInterval(keepaliveInterval));
}
if (localFlag_C2S_SwitchToWebSocket_Requested == false && this.C2S_SwitchToWebSocket_Requested)
{
// Web socket switch request invoked (only once)
$"Web socket switch request invoked"._Debug();
localFlag_C2S_SwitchToWebSocket_Requested = true;
sendBuffer.WriteSInt32(Consts.WideTunnelConsts.SpecialOpCode_C2S_SwitchToWebSocket_Request_Guacd);
}
if (sendBuffer.IsThisEmpty() == false)
{
//$"RawSendData: {sendBuffer.Span._GetHexString()}"._Debug();
LowerStream.FastSendNonBlock(sendBuffer);
}
await LowerStream.WaitReadyToSendAsync(cancel, Timeout.Infinite);
await UpperStream.WaitReadyToReceiveAsync(cancel, timer.GetNextInterval(), noTimeoutException : true, cancelEvent : C2S_SpecialOp_Event);
}
}
catch (Exception ex)
{
// ex._Debug();
this.UpperStream.Disconnect();
await this.CleanupAsync(ex);
}
}