0
我试图创建一个TFTP服务器,但当它收到一个文件似乎并不是所有的都保存到服务器上(有些字节丢失)。该文件创建正常,大部分数据被写入,但由于文件不完整,它被归类为腐败和无法打开。有谁知道如何解决这个问题?BufferedOutputStream不写入所有文件
主类
WRQ WRQ = new WRQ();
ACK ACK = new ACK();
DatagramPacket outPacket;
BufferedOutputStream bufferedOutput = new BufferedOutputStream(new FileOutputStream(filename));
byte[] bytes;
byte[] fileOut;
outPacket = WRQ.firstPacket(packet);
socket.send(outPacket);
socket.receive(packet);
while (packet.getLength() == 516){
bytes = WRQ.doWRQ(packet);
bufferedOutput.write(bytes);
outPacket = ACK.doACK(packet);
socket.send(outPacket);
socket.receive(packet);
}
bytes = WRQ.doWRQ(packet);
bufferedOutput.write(bytes);
bufferedOutput.close();
outPacket = ACK.doACK(packet);
socket.send(outPacket);
WRQ类
public class WRQ {
public DatagramPacket firstPacket(DatagramPacket packet) throws IOException{
ACK ACK = new ACK();
DatagramPacket ACKpacket = ACK.doACK(packet);
//takes ACK packet and sets block # as 0 to signal that this is the first packet in a WRQ
byte[] ACKcontents = new byte[3];
ACKcontents = ACKpacket.getData();
ACKcontents[2] = 0;
ACKcontents[3] = 0;
ACKpacket.setData(ACKcontents);
return ACKpacket;
}
public byte[] doWRQ(DatagramPacket packet){
int length = packet.getLength();
byte[] packetData = packet.getData();
byte[] data = new byte[length - 4];
data = Arrays.copyOfRange(packetData, 4, length - 4);
return data;
}
}
您可以编辑您的上一个问题。 –
感谢您的帮助。下次我会记住这一点。你能帮助解决这个问题吗? – DMo
问题可能出在您没有向我们显示的代码中。例如WRQ.doWRQ()方法。尝试记录在客户端上发送的字节,并写入服务器上的文件,并对它们进行比较。 –