41 lines
1.3 KiB
C#
41 lines
1.3 KiB
C#
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using System.Globalization;
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using System.Net.WebSockets;
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using System.Text;
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using System.Text.Json;
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using Wickra;
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// Stream live BTCUSDT 1-minute klines from Binance and feed each close through EMA(20).
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// Requires network access (build-only in CI). Runs for up to 60 seconds.
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var uri = new Uri("wss://stream.binance.com:9443/ws/btcusdt@kline_1m");
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Console.WriteLine($"Connecting to {uri} (up to 60s)...");
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using var ws = new ClientWebSocket();
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using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(60));
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using var ema = new Ema(20);
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var buffer = new byte[8192];
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try
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{
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await ws.ConnectAsync(uri, cts.Token);
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while (ws.State == WebSocketState.Open && !cts.IsCancellationRequested)
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{
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var result = await ws.ReceiveAsync(buffer, cts.Token);
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if (result.MessageType == WebSocketMessageType.Close)
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{
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break;
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}
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using var doc = JsonDocument.Parse(Encoding.UTF8.GetString(buffer, 0, result.Count));
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if (doc.RootElement.TryGetProperty("k", out var k))
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{
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var close = double.Parse(k.GetProperty("c").GetString()!, CultureInfo.InvariantCulture);
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var value = ema.Update(close);
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Console.WriteLine($"close={close:F2} EMA(20)={value:F2}");
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}
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}
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}
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catch (OperationCanceledException)
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{
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Console.WriteLine("Done (time limit reached).");
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}
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