private async Task <string> RequestStringAsync(Uri uri, bool checkCached)
{
Logger.Debug($"[{nameof(TumOnlineRequest)}] Request: {uri}");
if (checkCached && (SERVICE.VALIDITY != TumOnlineService.VALIDITY_NONE))
{
string result = CacheDbContext.GetCacheLine(uri.ToString());
if (!string.IsNullOrEmpty(result))
{
Logger.Debug($"Loaded cached request for: '{uri}'");
return(result);
}
Logger.Debug($"No cached request found for: '{uri}'");
}
if (!NetworkHelper.Instance.ConnectionInformation.IsInternetAvailable)
{
Logger.Warn("Unable to request string - no internet.");
return(null);
}
try
{
HttpClient client = new HttpClient();
client.DefaultRequestHeaders.TryAppendWithoutValidation("User-Agent", GetUserAgent());
HttpResponseMessage response = await client.GetAsync(uri);
IHttpContent content = response.Content;
IBuffer buffer = await content.ReadAsBufferAsync();
using (DataReader dataReader = DataReader.FromBuffer(buffer))
{
string result = dataReader.ReadString(buffer.Length);
if (SERVICE.VALIDITY != TumOnlineService.VALIDITY_NONE)
{
CacheDbContext.UpdateCacheLine(uri.ToString(), DateTime.Now.Add(SERVICE.VALIDITY), result);
}
Logger.Debug($"[{nameof(TumOnlineRequest)}] Response: {result}");
return(result);
}
}
catch (Exception e)
{
Logger.Error("Failed to request string from: " + uri, e);
}
return(null);
}