public async Task <bool> Send(string message, bool blockUntilSent = false)
{
// Queue the request.
SendQueueItem item = new SendQueueItem()
{
Message = message
};
if (blockUntilSent)
{
item.Mutex = new SemaphoreSlim(0);
}
m_sendQueue.Add(item);
if (blockUntilSent)
{
// Wait on the item to be sent.
await item.Mutex.WaitAsync(c_sendWaitTimeoutMs);
return(item.Sent);
}
return(true);
}
private async void SendThread()
{
while (State == SimpleWebySocketState.Connected)
{
// Wait on a message to send.
SendQueueItem item = null;
try
{
item = m_sendQueue.Take(m_cancelToken.Token);
}
catch (Exception)
{
// This throws when the cancel token if fired.
break;
}
// Grab the web socket locally for thread safety.
ClientWebSocket ws = m_ws;
if (ws == null)
{
item.Mutex?.Release();
break;
}
if (m_sendQueue.Count > 50)
{
Logger.Error($"Web socket send queue is looonnnggg {m_sendQueue.Count}.");
}
DateTime sendStart = DateTime.Now;
// Send the message.
try
{
byte[] buffer = Encoding.UTF8.GetBytes(item.Message);
await ws.SendAsync(new ArraySegment <byte>(buffer), WebSocketMessageType.Text, true, m_cancelToken.Token);
}
catch (Exception)
{
// If we failed to send, kill the connection.
await InternalDisconnect(WebSocketCloseStatus.NormalClosure);
item.Mutex?.Release();
break;
}
// Indicate the message was sent.
item.Sent = true;
item.Mutex?.Release();
double sleepyTimeMs = MinTimeBetweenSends.TotalMilliseconds - (DateTime.Now - sendStart).TotalMilliseconds;
if (sleepyTimeMs > 0)
{
Thread.Sleep((int)sleepyTimeMs);
}
}
}