Innovenergy_trunk/csharp/lib/Victron/VictronVRM/FlurlExtensions.cs

49 lines
1.4 KiB
C#

using System.Net;
using System.Text.Json.Nodes;
using Flurl.Http;
using Flurl.Http.Content;
using static System.Net.Http.HttpMethod;
namespace InnovEnergy.Lib.Victron.VictronVRM;
public static class FlurlExtensions
{
public static async Task<JsonNode> TryGetJson(this IFlurlRequest request)
{
var stream = await TryRequest(request, Get).ReceiveStream();
return JsonNode.Parse(stream)!;
}
public static async Task<JsonNode> TryPostJson(this IFlurlRequest request, JsonObject? content = null)
{
var stream = await TryRequest(request, Post, content).ReceiveStream();
return JsonNode.Parse(stream)!;
}
private static async Task<IFlurlResponse> TryRequest(this IFlurlRequest request, HttpMethod verb, JsonObject? data = null)
{
var jsonContent = data is null
? null
: new CapturedJsonContent(data.ToJsonString());
var delayMs = 50;
while (true)
{
try
{
return await request.SendAsync(verb, jsonContent);
}
catch (FlurlHttpException e) when (e.StatusCode == (Int32)HttpStatusCode.TooManyRequests)
{
if (delayMs > 2000)
throw;
await Task.Delay(delayMs);
delayMs = delayMs * 2 + Random.Shared.Next() % 4;
}
}
}
}