csharp_rest

gistfile1.txt

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


/*
OKX API

	OKX REST API addresses:
			REST: https://www.okx.com/
			Public WebSocket: wss://ws.okx.com:8443/ws/v5/public
			Private WebSocket: wss://ws.okx.com:8443/ws/v5/private
			Business WebSocket: wss://ws.okx.com:8443/ws/v5/business

	GET Orderbooks endpoint:
		GET /api/v5/market/books?instId=BTC-USDT

REF: 
	https://www.okx.com/docs-v5/en/
	https://www.okx.com/docs-v5/en/#order-book-trading-market-data-get-order-book
	https://www.okx.com/docs-v5/en/#overview-websocket-subscribe
	https://www.okx.com/docs-v5/en/#order-book-trading-market-data-ws-order-book-channel
*/
class Program
{
    static async Task Main(string[] args)
    {
        // Define the trading pairs
        string[] tradingPairs = { "BTC-USDT", "ETH-USDT", "SOL-USDT", "MATIC-USDT", "LTC-USDT" };

        // Initialize HttpClient
        using (HttpClient client = new HttpClient())
        {
            // Base URL for OKX REST API
            string baseUrl = "https://www.okx.com";

            foreach (string pair in tradingPairs)
            {
                try
                {
                    // Form the request URL
                    string endpoint = $"/api/v5/market/books?instId={pair}";
                    string requestUrl = baseUrl + endpoint;

                    // Make GET request to fetch order book
                    HttpResponseMessage response = await client.GetAsync(requestUrl);

                    // Check if request was successful
                    if (response.IsSuccessStatusCode)
                    {
                        // Read response content as string
                        string responseContent = await response.Content.ReadAsStringAsync();

                        // Print the response
                        Console.WriteLine($"Order Book for {pair}:");
                        Console.WriteLine(responseContent);
                    }
                    else
                    {
                        Console.WriteLine($"Failed to fetch order book for {pair}. Status code: {response.StatusCode}");
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"An error occurred while fetching order book for {pair}: {ex.Message}");
                }
            }
        }
    }
}