public void Sendfile()
{
if (!string.IsNullOrEmpty(FilePath))
{
double fileLength = new FileInfo(FilePath).Length;
//先发文件名和文件长度确认信息
string totalMsg = string.Format("{0}/{1}/", FileName, fileLength);
SendMsg(totalMsg, 2);
Thread.Sleep(200);
byte[] buffer = new byte[SendBufferSize];
using (FileStream fs = new FileStream(FilePath, FileMode.Open, FileAccess.Read))
{
int readLength = 0;
bool firstRead = true;
double sentFileLength = 0;
while ((readLength = fs.Read(buffer, 0, buffer.Length)) > 0 && sentFileLength < fileLength)
{
sentFileLength += readLength;
//在第一次发送的字节流上加个前缀1
if (firstRead)
{
byte[] firstBuffer = new byte[readLength + 1];
firstBuffer[0] = 1; //告诉机器该发送的字节数组为文件
Buffer.BlockCopy(buffer, 0, firstBuffer, 1, readLength);
socketClient.Send(firstBuffer, 0, readLength + 1, SocketFlags.None);
//Stream.Write(firstBuffer, 0, readLength+1);
firstRead = false;
continue;
}
try
{
//之后发送的均为直接读取的字节流
socketClient.Send(buffer, 0, readLength, SocketFlags.None);
//Stream.Write(buffer, 0, readLength);
}
catch
{
}
if (fp != null)
{
fp.Dispatcher.BeginInvoke(new Action(delegate
{
fp.Update(sentFileLength / fileLength * 100);
}));
}
}
fs.Close();
socketClient.Close();
}
}
}
private void ServerRecMsg(object socketClientPara)
{
Socket socketServer = socketClientPara as Socket;
double fileLength = 0;
double receivedTotalFilelength = 0;
while (true)
{
int firstReceived = 0;
byte[] buffer = new byte[ReceiveBufferSize];
try
{
//获取接收的数据,并存入内存缓冲区 返回一个字节数组的长度
if (socketServer != null)
{
firstReceived = socketServer.Receive(buffer);
}
if (firstReceived > 0) //接受到的长度大于0 说明有信息或文件传来
{
if (buffer[0] == 0) //0为文字信息
{
strSRecMsg = Encoding.UTF8.GetString(buffer, 1, firstReceived - 1); //真实有用的文本信息要比接收到的少1(标识符)
}
if (buffer[0] == 2) //2为文件名字和长度
{
string fileNameWithLength = Encoding.UTF8.GetString(buffer, 1, firstReceived - 1);
string [] tokens = fileNameWithLength.Split(new char [] { '/' });
strSRecMsg = tokens[0]; //文件名
fileLength = Convert.ToInt64(tokens[1]); //文件长度
}
if (buffer[0] == 1) //1为文件
{
//string fileNameSuffix = strSRecMsg.Substring(strSRecMsg.LastIndexOf('.')); //文件后缀
string savePath = FilePath; //获取文件的全路径
//保存文件
int received = 0;
receivedTotalFilelength = 0;
bool firstWrite = true;
using (FileStream fs = new FileStream(savePath, FileMode.Create, FileAccess.Write))
{
while (receivedTotalFilelength < fileLength) //之后收到的文件字节数组
{
if (firstWrite)
{
fs.Write(buffer, 1, firstReceived - 1); //第一次收到的文件字节数组 需要移除标识符1 后写入文件
fs.Flush();
receivedTotalFilelength += firstReceived - 1;
firstWrite = false;
continue;
}
received = socketServer.Receive(buffer); //之后每次收到的文件字节数组 可以直接写入文件
fs.Write(buffer, 0, received);
fs.Flush();
receivedTotalFilelength += received;
try
{
if (fp != null)
{
fp.Dispatcher.BeginInvoke(new Action(delegate
{
fp.Update(receivedTotalFilelength / fileLength * 100);
}));
}
}
catch { }
}
Finish = true;
fs.Close();
socketWatch.Close();
FileRecv.ServiceFlag = false;
threadWatch.Abort();
}
string fName = savePath.Substring(savePath.LastIndexOf("\\") + 1); //文件名 不带路径
string fPath = savePath.Substring(0, savePath.LastIndexOf("\\")); //文件路径 不带文件名
}
}
if (receivedTotalFilelength == fileLength)
{
socketWatch.Close();
ServiceFlag = false;
threadWatch.Abort();
}
}
catch
{
break;
}
}
}