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FinnhubDotNet - clean and efficient C# websocket wrapper for Finnhub

Disclaimer

  • This is not an official C# SDK of Finnhub. This is a personal project aimed to contribute to the open-source community.

Installation

  • .NET CLI: dotnet add package FinnhubDotNet
  • Or search FinnhubDotNet in Visual Studio using NugetPackageManager.
  • Or download the ./FinnhubDotNet folder and build the class library locally.

Sample Usage

namespace Test {
    internal class Program {
        static async Task Main(string[] args) {
            string yourKey = "";
            var ws = new FinnhubDotNet.Websocket.FinnhubStreamingClient(yourKey);
            await ws.ConnectAsync();
            await ws.SubscribeTradeAsync("BINANCE:BTCUSDT");
            await ws.SubscribeTradeAsync("BINANCE:ETHUSDT");
            ws.tradeUpdate += (trades) => {
                foreach (var trade in trades) {
                    Console.WriteLine(trade);
                }
            };

            while (true) {
                await Task.Delay(5000);
            }
        }
    }
}

Advantages

  • Efficient data handling: The data receiving logic is implemented with a pipe and a two-thread producer-consumer pattern, minimizing memory overheads and ensuring low latency.
  • Minimalistic interfaces.