MM2Client.cs

using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace workspace
{
    public class MM2Client
    {
        private static readonly HttpClient Client = new HttpClient();
        
        private static async Task<string> ProcessRequest(string req)
        {
            var response = await Client.PostAsync("http://127.0.0.1:7783",
                new StringContent(req, Encoding.UTF8, "application/json"));

            return await response.Content.ReadAsStringAsync();
            // return s;
        }
        
        public static async Task<string> ProcessElectrum(string ticker, Server[] servers)
        {
            var req = new ElectrumRequest
            {
                Coin = ticker,
                Servers = servers,
                Method = "electrum",
                Userpass = "root"
            };

            return await ProcessRequest(req.ToJson());
        }

        
        public static async Task<string> ProcessBalance(string ticker)
        {
            var req = new ElectrumRequest
            {
                Coin = ticker,
                Method = "my_balance",
                Userpass = "root"
            };

            return await ProcessRequest(req.ToJson());
        }

    
        public static async Task<string> ProcessOrderBook(string baseCoin, string rel)
        {
            var req = new OrderBookRequest
            {
                Base = baseCoin,
                Rel = rel,
                Method = "orderbook",
                Userpass = "root"
            };

            return await ProcessRequest(req.ToJson());
        }
        
    }
}

OrderBookRequest.cs

// <auto-generated />
//
// To parse this JSON data, add NuGet 'Newtonsoft.Json' then do:
//
//    using workspace;
//
//    var orderBookRequest = OrderBookRequest.FromJson(jsonString);

namespace workspace
{
    using System;
    using System.Collections.Generic;

    using System.Globalization;
    using Newtonsoft.Json;
    using Newtonsoft.Json.Converters;

    public partial class OrderBookRequest
    {
        [JsonProperty("userpass")]
        public string Userpass { get; set; }

        [JsonProperty("method")]
        public string Method { get; set; }

        [JsonProperty("base")]
        public string Base { get; set; }

        [JsonProperty("rel")]
        public string Rel { get; set; }
    }

    public partial class OrderBookRequest
    {
        public static OrderBookRequest FromJson(string json) => JsonConvert.DeserializeObject<OrderBookRequest>(json, Converter.Settings);
    }

    public static partial class Serialize
    {
        public static string ToJson(this OrderBookRequest self) => JsonConvert.SerializeObject(self, Converter.Settings);
    }

}

Program.cs

using System;
using System.Threading.Tasks;

namespace workspace
{
    class Program
    {
        static async Task Main(string[] args)
        {

            var responseBody = await MM2Client.ProcessElectrum("RICK", new Server[]
            {
                new Server {Url = "electrum1.cipig.net:10017"},
                new Server {Url = "electrum2.cipig.net:10017"},
                new Server {Url = "electrum3.cipig.net:10017"}
            });

            Console.WriteLine(responseBody);


            responseBody = await MM2Client.ProcessElectrum("MORTY", new Server[]
                {
                    new Server {Url = "electrum1.cipig.net:10018"},
                    new Server {Url = "electrum2.cipig.net:10018"},
                    new Server {Url = "electrum3.cipig.net:10018"}
                });
            Console.WriteLine(responseBody);

            responseBody = await MM2Client.ProcessBalance("RICK");
            Console.WriteLine(responseBody);
            
            responseBody = await MM2Client.ProcessOrderBook("RICK", "MORTY");
            Console.WriteLine(responseBody);
        }


    }
}