/// <summary>
///
/// </summary>
/// <param name="netWorkStream"></param>
/// <param name="data"></param>
/// <returns></returns>
protected override bool DataTransfer(NetworkStream netWorkStream, FileMSG data)
{
this.SendData(netWorkStream, data, "开始上传文件...");
Answer answer = this.ReciveAnswer(netWorkStream);
if (answer != null) this.RaiseChanged(answer.Message);
this.RaiseChanged(DateTime.Now + @"【与教师机客户端断开连接】");
return true;
}
/// <summary>
/// 上传文件。
/// </summary>
/// <param name="data"></param>
public bool Upload(FileMSG data)
{
bool result = false;
if (data == null) return result;
int dataSize = 0;
if (this.maxDataSize > 0 && !this.ValidDataSize(this.maxDataSize, data, out dataSize))
{
string msg = string.Format("数据过大({0}M，超过了规定传输的{1:N2}M)!", dataSize, dataSize - this.maxDataSize);
MessageBox.Show(msg, "上传文件", MessageBoxButtons.OK, MessageBoxIcon.Information);
return result;
}
try
{
using (TcpClient client = new TcpClient())
{
if (!client.Connected)
{
client.Connect(this.host);
this.RaiseChanged(string.Format("{0}【与{1}:{2}建立连接...】", DateTime.Now, this.host.Address, this.host.Port));
}
data.UIP = string.Format("{0}", this.host.Address);
NetworkStream stream = client.GetStream();
if (stream != null)
{
try
{
result = this.DataTransfer(stream, data);
}
catch (Exception e)
{
this.SendAnswer(stream, MSGKind.UploadFile, "上传文件异常：" + e.Message);
throw e;
}
finally
{
client.Close();
}
}
}
}
catch (SocketException e)
{
this.RaiseChanged(string.Format("{0}【发生网络故障，{1}】", DateTime.Now, e.SocketErrorCode));
this.OnExceptionRecord(e, typeof(TcpClientService));
}
catch (Exception e)
{
this.OnExceptionRecord(e, typeof(TcpClientService));
if (this.uploadFileMaxCount-- > 0)
{
result = this.Upload(data);
}
}
return result;
}
/// <summary>
///
/// </summary>
/// <param name="netWorkStream"></param>
/// <param name="data"></param>
/// <returns></returns>
protected override bool DataTransfer(NetworkStream netWorkStream, FileMSG data)
{
IssueWorkFile file = data as IssueWorkFile;
this.RaiseChanged(string.Format("{0}【准备下发文件{1}...】", DateTime.Now, file.WorkName));
this.SendData(netWorkStream, file, string.Format("开始下发文件{0}...", file.WorkName));
this.RaiseChanged(string.Format("{0}【下发文件{1}完毕！】", DateTime.Now, file.WorkName));
Answer answer = this.ReciveAnswer(netWorkStream);
if (answer != null && answer.SourceKind == MSGKind.IssueWorkFile)
{
this.RaiseChanged(answer.Message);
}
this.RaiseChanged(DateTime.Now + @"【将与学生机客户端断开连接】");
return true;
}
/// <summary>
///
/// </summary>
/// <param name="maxDataSize"></param>
/// <param name="data"></param>
/// <param name="dataSize"></param>
/// <returns></returns>
protected override bool ValidDataSize(int maxDataSize, FileMSG data, out int dataSize)
{
dataSize = 0;
UploadFileMSG file = data as UploadFileMSG;
if (file != null && file.Files != null && file.Files.Count > 0)
{
foreach (StudentWorkFile swf in file.Files)
{
dataSize += (int)swf.Size;
}
dataSize = dataSize / 1024 / 1024;
return maxDataSize - dataSize > 0;
}
return true;
}
/// <summary> /// 验证最大数据大小。 /// </summary> /// <param name="maxDataSize"></param> /// <param name="data"></param> /// <param name="dataSize"></param> /// <returns></returns> protected abstract bool ValidDataSize(int maxDataSize, FileMSG data, out int dataSize);
/// <summary> /// 数据传输。 /// </summary> /// <param name="netWorkStream"></param> /// <param name="data"></param> protected abstract bool DataTransfer(NetworkStream netWorkStream, FileMSG data);
/// <summary>
///
/// </summary>
/// <param name="maxDataSize"></param>
/// <param name="data"></param>
/// <param name="dataSize"></param>
/// <returns></returns>
protected override bool ValidDataSize(int maxDataSize, FileMSG data, out int dataSize)
{
dataSize = 0;
return true;
}
/// <summary>
///
/// </summary>
/// <param name="data"></param>
protected void OnDataArrival(FileMSG data)
{
SocketDataArrivalEventHandler<FileMSG> handler = this.DataArrival;
if (handler != null && data != null)
handler(data);
}
/// <summary>
///
/// </summary>
/// <param name="data"></param>
private void ReceiveIssueWorkFile(FileMSG data)
{
try
{
IssueWorkFile file = data as IssueWorkFile;
if (file != null)
{
lock (this)
{
string hostIP = string.Format("{0}", this["host_ip"]);
Student stu = this["student"] as Student;
if ((hostIP == file.UIP) && (stu != null && stu.StudentID == file.StudentID) && (file.Data != null))
{
string path = this.CreateFilePath(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), file.WorkName, string.Empty, ".zip", 1);
using (FileStream stream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))
{
byte[] buf = file.Data;
stream.Write(buf, 0, buf.Length);
}
}
}
}
}
catch (Exception x)
{
MessageBox.Show(x.Message, "接收下发数据时发生异常");
Program.GlobalExceptionHandler(x);
}
}
