private async Task ProcessGetFileCmd(CommandHeader cmdHeader) { var data = await NetworkHelperSequential.Read <GetFileCommandData>(_networkStream, cmdHeader.PayloadLength); var ret = new ServerResponse(); var session = SessionStorage.Instance.GetSession(data.SessionId); if (session == null) { ret.ErrorMsg = "Session does not exist"; } else if (session.Expired) { ret.ErrorMsg = "Session has expired"; //Log?.Invoke("Session has expired"); //return ret; } else { data.RelativeFilePath = PathHelpers.NormalizeRelative(data.RelativeFilePath); Msg?.Invoke($"Sending '{data.RelativeFilePath}'"); var filePath = Path.Combine(session.BaseDir, data.RelativeFilePath); var fileLength = new FileInfo(filePath).Length; var fileLengthBytes = BitConverter.GetBytes(fileLength); await NetworkHelperSequential.WriteCommandHeader(_networkStream, Commands.GetFileCmd, sizeof(long)); await NetworkHelperSequential.WriteBytes(_networkStream, fileLengthBytes); await NetworkHelperSequential.WriteFromFileAndHashAsync(_networkStream, filePath, (int)fileLength); } }
private async Task <bool> SendFiles(NetworkStream networkStream, List <SyncFileInfo> dataToUpload, SyncDatabase syncDb) { foreach (var fileInfo in dataToUpload) { var filePath = Path.Combine(_baseDir, fileInfo.RelativePath); var fileLength = new FileInfo(filePath).Length; var data = new SendFileCommandData { FileLength = fileLength, SessionId = _sessionId, RelativeFilePath = fileInfo.RelativePath, HashStr = syncDb.Files.First(x => x.RelativePath == fileInfo.RelativePath).HashStr, }; var dataBytes = Serializer.Serialize(data); await NetworkHelperSequential.WriteCommandHeader(networkStream, Commands.SendFileCmd, dataBytes.Length); await NetworkHelperSequential.WriteBytes(networkStream, dataBytes); await NetworkHelperSequential.WriteFromFileAndHashAsync(networkStream, filePath, (int)fileLength); } return(true); }
private async Task <ServerResponse> FinishSession(Stream networkStream, Guid sessionId) { var cmdDataBytes = Serializer.Serialize(sessionId); await NetworkHelperSequential.WriteCommandHeader(networkStream, Commands.FinishSessionCmd, cmdDataBytes.Length); await NetworkHelperSequential.WriteBytes(networkStream, cmdDataBytes); var cmdHeader = await NetworkHelperSequential.ReadCommandHeader(networkStream); if (cmdHeader.Command != Commands.FinishSessionCmd) { return new ServerResponseWithData <SyncInfo> { ErrorMsg = "Wrong command received" } } ; if (cmdHeader.PayloadLength == 0) { return new ServerResponseWithData <SyncInfo> { ErrorMsg = "No data received" } } ; var responseBytes = await NetworkHelperSequential.ReadBytes(networkStream, cmdHeader.PayloadLength); var response = Serializer.Deserialize <ServerResponse>(responseBytes); return(response); }
public static async Task WriteCommandResponse <T>(NetworkStream stream, byte command, T data) { var responseBytes = Serializer.Serialize(data); var length = responseBytes.Length; await NetworkHelperSequential.WriteCommandHeader(stream, command, length); await NetworkHelperSequential.WriteBytes(stream, responseBytes); }
private async Task <bool> ReceiveFiles(Stream networkStream, IEnumerable <SyncFileInfo> dataToDownload, SyncDatabase syncDb) { foreach (var fileInfo in dataToDownload) { var data = new GetFileCommandData { SessionId = _sessionId, RelativeFilePath = fileInfo.RelativePath, }; var dataBytes = Serializer.Serialize(data); await NetworkHelperSequential.WriteCommandHeader(networkStream, Commands.GetFileCmd, dataBytes.Length); await NetworkHelperSequential.WriteBytes(networkStream, dataBytes); var cmdHeader = await NetworkHelperSequential.ReadCommandHeader(networkStream); if (cmdHeader.Command != Commands.GetFileCmd) { return(false); } if (cmdHeader.PayloadLength == 0) { return(false); } var fileLengthBytes = await NetworkHelperSequential.ReadBytes(networkStream, cmdHeader.PayloadLength); var fileLength = BitConverter.ToInt64(fileLengthBytes, 0); var tmpFilePath = Path.Combine(_newDir, fileInfo.RelativePath); var newHash = await NetworkHelperSequential.ReadToFileAndHashAsync(networkStream, tmpFilePath, (int)fileLength); if (!string.Equals(newHash.ToHashString(), fileInfo.HashStr, StringComparison.OrdinalIgnoreCase)) { throw new InvalidOperationException("File copy error: hash mismatch"); } _sessionFileHelper.AddNew(fileInfo.RelativePath); var fi = syncDb.Files.FirstOrDefault(x => x.RelativePath == fileInfo.RelativePath); if (fi == null) { fi = new SyncFileInfo { RelativePath = fileInfo.RelativePath, }; syncDb.Files.Add(fi); } fi.HashStr = newHash.ToHashString(); fi.State = SyncFileState.NotChanged; } return(true); }
private async Task <ServerResponseWithData <SyncInfo> > GetSyncList(Stream networkStream, Guid sessionId, List <SyncFileInfo> syncDbFiles) { var cmdData = new GetSyncListCommandData { SessionId = sessionId, Files = syncDbFiles, }; var cmdDataBytes = Serializer.Serialize(cmdData); await NetworkHelperSequential.WriteCommandHeader(networkStream, Commands.GetSyncListCmd, cmdDataBytes.Length); await NetworkHelperSequential.WriteBytes(networkStream, cmdDataBytes); var cmdHeader = await NetworkHelperSequential.ReadCommandHeader(networkStream); if (cmdHeader.Command != Commands.GetSyncListCmd) { return new ServerResponseWithData <SyncInfo> { ErrorMsg = "Wrong command received" } } ; if (cmdHeader.PayloadLength == 0) { return new ServerResponseWithData <SyncInfo> { ErrorMsg = "No data received" } } ; var responseBytes = await NetworkHelperSequential.ReadBytes(networkStream, cmdHeader.PayloadLength); var response = Serializer.Deserialize <ServerResponseWithData <SyncInfo> >(responseBytes); return(response); }