private async Task <TransmissionResponse> SendRequestAsync(TransmissionRequest request)
{
TransmissionResponse result = new TransmissionResponse();
request.Tag = ++CurrentTag;
try
{
byte[] byteArray = Encoding.UTF8.GetBytes(request.ToJson());
//Prepare http web request
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(Url);
webRequest.ContentType = "application/json-rpc";
webRequest.Headers["X-Transmission-Session-Id"] = SessionID;
webRequest.Method = "POST";
if (_needAuthorization)
{
webRequest.Headers["Authorization"] = _authorization;
}
using (Stream dataStream = await webRequest.GetRequestStreamAsync())
{
dataStream.Write(byteArray, 0, byteArray.Length);
}
//Send request and prepare response
using (var webResponse = await webRequest.GetResponseAsync())
{
using (Stream responseStream = webResponse.GetResponseStream())
{
var reader = new StreamReader(responseStream, Encoding.UTF8);
var responseString = reader.ReadToEnd();
result = JsonConvert.DeserializeObject <TransmissionResponse>(responseString);
if (result.Result != "success")
{
throw new Exception(result.Result);
}
}
}
}
catch (WebException ex)
{
if (((HttpWebResponse)ex.Response).StatusCode == HttpStatusCode.Conflict)
{
if (ex.Response.Headers.Count > 0)
{
//If session id expiried, try get session id and send request
SessionID = ex.Response.Headers["X-Transmission-Session-Id"];
if (SessionID == null)
{
throw new Exception("Session ID Error");
}
result = await SendRequestAsync(request);
}
}
else
{
throw ex;
}
}
return(result);
}
/// <summary>
/// Add torrents (API: torrent-add)
/// </summary>
/// <param name="torrents"></param>
/// <returns>Torrent info (ID, Name and HashString)</returns>
public async Task <AddTorrentsResponse> TorrentsAddAsync(List <NewTorrent> torrents)
{
var successes = new List <AddTorrentSuccess>();
var failures = new List <AddTorrentFailure>();
foreach (var torrent in torrents)
{
try
{
var request = new TransmissionRequest("torrent-add", torrent.ToDictionary());
TransmissionResponse response = await SendRequestAsync(request);
if (!response.Result.Equals("success", StringComparison.OrdinalIgnoreCase))
{
failures.Add(new AddTorrentFailure
{
SubmittedData = torrent.Filename ?? torrent.MetaInfo,
SubmittedDataType = !string.IsNullOrEmpty(torrent.Filename) ? "file or url" : "meta info",
Error = response.Result
});
continue;
}
JObject jObject = response.Deserialize <JObject>();
if (jObject?.First == null)
{
failures.Add(new AddTorrentFailure
{
SubmittedData = torrent.Filename ?? torrent.MetaInfo,
SubmittedDataType = !string.IsNullOrEmpty(torrent.Filename) ? "file or url" : "meta info",
Error = "Deserialization error"
});
continue;
}
if (jObject.TryGetValue("torrent-duplicate", out JToken value))
{
successes.Add(new AddTorrentSuccess
{
SubmittedData = torrent.Filename ?? torrent.MetaInfo,
SubmittedDataType = !string.IsNullOrEmpty(torrent.Filename) ? "file or url" : "meta info",
TransmissionResponse = JsonConvert.DeserializeObject <CreatedTorrent>(value.ToString())
});
continue;
}
if (jObject.TryGetValue("torrent-added", out value))
{
successes.Add(new AddTorrentSuccess
{
SubmittedData = torrent.Filename ?? torrent.MetaInfo,
SubmittedDataType = !string.IsNullOrEmpty(torrent.Filename) ? "file or url" : "meta info",
TransmissionResponse = JsonConvert.DeserializeObject <CreatedTorrent>(value.ToString())
});
}
}
catch (Exception e)
{
failures.Add(new AddTorrentFailure
{
SubmittedData = torrent.Filename ?? torrent.MetaInfo,
SubmittedDataType = !string.IsNullOrEmpty(torrent.Filename) ? "file or url" : "meta info",
Error = $"Unknown error occurred: {e.Message}"
});
}
}
return(new AddTorrentsResponse
{
Successes = successes.Any() ? successes : null,
Failures = failures.Any() ? failures : null
});
}
private async Task <TransmissionResponse> SendRequestAsync(TransmissionRequest request, CancellationToken token)
{
var result = new TransmissionResponse();
request.Tag = ++CurrentTag;
var counter = 0;
var byteArray = Encoding.UTF8.GetBytes(request.ToJson());
//Prepare http web request
if (!CheckURLValid(Url))
{
throw new WebException("Host error", WebExceptionStatus.NameResolutionFailure);
}
while (counter < NumberOfAttempts)
{
try
{
var webRequest = (HttpWebRequest)WebRequest.Create(Url);
webRequest.ContentType = "application/json-rpc";
webRequest.Method = "POST";
if (_needAuthorization)
{
webRequest.Headers["Authorization"] = _authorization;
}
webRequest.Headers["X-Transmission-Session-Id"] = SessionId;
await using (var dataStream = await webRequest.GetRequestStreamAsync())
{
await dataStream.WriteAsync(byteArray, 0, byteArray.Length, token);
}
//Send request and prepare response
using var webResponse = await webRequest.GetResponseAsync(token);
await using var responseStream = await webResponse.GetResponseStream(token);
if (responseStream == null)
{
result.CustomException = new Exception("Stream resonse is null");
Log.Error(result.WebException);
return(result);
}
var reader = new StreamReader(responseStream, Encoding.UTF8);
var responseString = await reader.ReadToEndAsync(token);
result = JsonConvert.DeserializeObject <TransmissionResponse>(responseString);
if (result.Result != "success")
{
throw new Exception(result.Result);
}
break;
}
catch (TaskCanceledException)
{
result.Result = "canceled";
return(result);
}
}
