public static void postFile(Socket clientSocket, string sourceFilePath)
{
try
{
VerifyHandler.postMessage(clientSocket, CommonStaticVariables.messageBeginEncrypted);
VerifyHandler.verify(clientSocket);
FileStream fileToSend = new FileStream(sourceFilePath, FileMode.Open, FileAccess.Read); //注意与receive的filestream的区别
BinaryReader binaryreader = new BinaryReader(fileToSend);
byte[] fileBytes = new byte[CommonStaticVariables.constSize];
int count;
while ((count = binaryreader.Read(fileBytes, 0, CommonStaticVariables.constSize)) != 0) //这个注意是将文件写成流的形式
{
byte[] fileFragmentToSend = EncryptionDecryptionHandler.messageEncrypt(fileBytes);
clientSocket.Send(fileFragmentToSend, count, SocketFlags.None); //发送文件流到目标机器
}
binaryreader.Close();
fileToSend.Close();
System.Threading.Thread.Sleep(200);
VerifyHandler.postMessage(clientSocket, CommonStaticVariables.messageOverEncrypted);
}
catch (Exception ex)
{
}
}
public static void receiveFile(string fullPath, DateTime lastWriteTime, Socket clientSocket)
{
try
{
byte[] receiveBytes = new byte[CommonStaticVariables.constSize];
// 接收从客户端传来的文件
if (File.Exists(fullPath))
{
File.Delete(fullPath);
}
FileStream fileToReceive = new FileStream(fullPath, FileMode.Append, FileAccess.Write);
BinaryWriter binarywrite = new BinaryWriter(fileToReceive);
while (true)
{
if (clientSocket.Poll(100, SelectMode.SelectRead))
{
Array.Clear(receiveBytes, 0, CommonStaticVariables.constSize);
int count = clientSocket.Receive(receiveBytes);
if (VerifyHandler.verify(receiveBytes, CommonStaticVariables.messageBeginEncrypted, count))
{
VerifyHandler.postMessage(clientSocket, CommonStaticVariables.messageDoneEncrypted);
continue;
}
else if (VerifyHandler.verify(receiveBytes, CommonStaticVariables.messageOverEncrypted, count))
{
binarywrite.Flush();
binarywrite.Close();
fileToReceive.Close();
break;
}
else
{
//将接收的流用写成文件
byte[] fileFragmentToWrite = EncryptionDecryptionHandler.messageDecrypt(receiveBytes);
binarywrite.Write(fileFragmentToWrite, 0, count);
}
}
else
{
if (clientSocket.Poll(100, SelectMode.SelectError))
{
break;
}
}
}
File.SetLastWriteTime(fullPath, lastWriteTime);
}
catch (Exception ex)
{
}
}