ArchiSteamFarm.ArchiWebHandler.GetTradeHoldDuration C# (CSharp) Метод

		internal async Task<byte?> GetTradeHoldDuration(ulong tradeID) {
			if (tradeID == 0) {
				Bot.ArchiLogger.LogNullError(nameof(tradeID));
				return null;
			}

			if (!await RefreshSessionIfNeeded().ConfigureAwait(false)) {
				return null;
			}

			string request = SteamCommunityURL + "/tradeoffer/" + tradeID + "?l=english";

			HtmlDocument htmlDocument = await WebBrowser.UrlGetToHtmlDocumentRetry(request).ConfigureAwait(false);

			HtmlNode htmlNode = htmlDocument?.DocumentNode.SelectSingleNode("//div[@class='pagecontent']/script");
			if (htmlNode == null) { // Trade can be no longer valid
				return null;
			}

			string text = htmlNode.InnerText;
			if (string.IsNullOrEmpty(text)) {
				Bot.ArchiLogger.LogNullError(nameof(text));
				return null;
			}

			int index = text.IndexOf("g_daysTheirEscrow = ", StringComparison.Ordinal);
			if (index < 0) {
				Bot.ArchiLogger.LogNullError(nameof(index));
				return null;
			}

			index += 20;
			text = text.Substring(index);

			index = text.IndexOf(';');
			if (index < 0) {
				Bot.ArchiLogger.LogNullError(nameof(index));
				return null;
			}

			text = text.Substring(0, index);

			byte holdDuration;
			if (byte.TryParse(text, out holdDuration)) {
				return holdDuration;
			}

			Bot.ArchiLogger.LogNullError(nameof(holdDuration));
			return null;
		}