public FileTransportErrorEventArgs(Errors error, string message, TransportFile file, Exception e)
: base(file)
{
Error = error;
Message = message;
Exception = e;
}
public void AddTransportFile(TransportFile file)
{
LoggerFactory.Debug("add ready send file={0}", file);
_transportFileDic.TryAdd(file.ID, file);
//TODO
//if(_transportFileDic.Count > MAX_COUNT)
//{
// //移除那些时间比较久的
//}
}
protected virtual void OnError(Errors error, string message, TransportFile file, Exception e)
{
LoggerFactory.Error("{0}, file={1}, exception={2}", message, file, e);
FileTransportErrorEventArgs args = new FileTransportErrorEventArgs(error, message, file, e);
if (_context == null)
{
ErrorSendOrPostCallBack(args);
}
else
{
//在指定线程上调用事件委托
_context.Post(ErrorSendOrPostCallBack, args);
}
}
protected virtual void OnCompleted(TransportFile file)
{
LoggerFactory.Debug("send file completed");
FileTransportEventArgs args = new FileTransportEventArgs(file);
if (_context == null)
{
CompletedSendOrPostCallBack(args);
}
else
{
//在指定线程上调用事件委托
_context.Post(CompletedSendOrPostCallBack, args);
}
}
protected virtual void OnProgressChanged(TransportFile file)
{
LoggerFactory.Debug("send file progress change: file={0}, progress={1}", file, file.Progress);
FileTransportEventArgs args = new FileTransportEventArgs(file);
if (_context == null)
{
ProgressChangedSendOrPostCallBack(args);
}
else
{
//在指定线程上调用事件委托
_context.Post(ProgressChangedSendOrPostCallBack, args);
}
}
public void Receive(TransportFile file)
{
TaskFactory taskFactory = new TaskFactory();
taskFactory.StartNew(() =>
{
LoggerFactory.Debug("start receive file:id={0}", file.ID);
string tmpPath = file.SavePath + "." + Path.GetRandomFileName().Replace(".", "") + ".lamim";
FileStream fs = null;
try
{
fs = new FileStream(tmpPath, FileMode.Create);
}
catch (Exception e)
{
OnError(Errors.FileOpenError, "打开文件失败:" + tmpPath, file, e);
return;
}
LoggerFactory.Debug("opened file:" + tmpPath);
LoggerFactory.Debug("try connect remote:remote={0}, port={1}", file.Remote, file.Port);
TcpClient tcpClient = null;
NetworkStream ns = null;
try
{
tcpClient = new TcpClient(AddressFamily.InterNetwork)
{
ReceiveBufferSize = this.ReceiveBufferSize
};
tcpClient.Connect(file.Remote, file.Port);
ns = tcpClient.GetStream();
}
catch (Exception e)
{
OnError(Errors.NetworkError, "连接失败", file, e);
return;
}
LoggerFactory.Debug("conneted remote:remote={0}, port={1}", file.Remote, file.Port);
LoggerFactory.Debug("encode packet, request file:id={0}", file.ID);
TcpPacket packet = null;
EncodeResult result = null;
try
{
//发送要接受的文件ID
TcpPacketRequestFileTransportExtend extend = new TcpPacketRequestFileTransportExtend
{
EncryptKey = file.PublicKey,
FileID = file.ID
};
packet = new TcpPacket
{
Command = TcpPacket.CMD_REQUEST_FILE_TRANSPORT,
Extend = extend
};
IPacketEncoder encoder = PacketEncoderFactory.CreateEncoder(packet);
result = encoder.Encode(null);
}
catch (Exception e)
{
OnError(Errors.EncodeError, "请求文件ID包加密失败。" + packet.ToString(), file, e);
return;
}
LoggerFactory.Debug("send packet, request file:id={0}", file.ID);
try
{
ns.Write(result.Fragments[0], 0, result.Fragments[0].Length);
}
catch (Exception e)
{
OnError(Errors.NetworkError, "请求文件ID包发送失败", file, e);
return;
}
LoggerFactory.Debug("receive file start:id={0}", file.ID);
try
{
int len = 0;
file.StartTransport();
long lastProgressTicks = file.NowTransportTicks;
byte[] buff = new byte[this.ReceiveBufferSize];
while ((len = ns.Read(buff, 0, buff.Length)) != 0)
{
fs.Write(buff, 0, len);
file.Transported(len);
if (file.TransportedLength == file.File.Length ||
(DateTime.Now.Ticks - lastProgressTicks) > this._progressChangeInterval) //避免进度太频繁，500ms一次
{
OnProgressChanged(file);
lastProgressTicks = file.NowTransportTicks;
}
}
LoggerFactory.Debug("receive file end:id={0}", file.ID);
}
catch (Exception e)
{
OnError(Errors.NetworkError, "文件接收失败", file, e);
}
finally
{
LoggerFactory.Debug("close connect and save file:id={0}", file.ID);
//关闭连接
ns.Close();
tcpClient.Close();
fs.Flush(true);
fs.Close();
if (LanFile.Rename(tmpPath, file.SavePath))
{
//发送接收完毕
OnCompleted(file);
}
else
{
OnError(Errors.FileWriteError, "文件写入失败", file, null);
}
}
LoggerFactory.Debug("end receive file:id={0}", file.ID);
});
}
public FileTransportEventArgs(TransportFile file)
{
File = file;
}
