Android套接字java.io.EOFException。客户端写入文件，但0 KB

Question

我正在创建一个TCP文件发送者。 TCP服务器运行得很好，但是客户端获得了EOFException。如何解决该异常？我还授予了运行时权限，并将权限写入manifest.xml。

这是服务器代码：

ServerSocket ss = new ServerSocket(8899);
System.out.println("Searching...");
Socket soc = ss.accept();
System.out.println("Connected");
DataOutputStream dos = new DataOutputStream(soc.getOutputStream());
String filepath = "C:\\Users\\Nitesh Rathi\\Downloads\\Garena-v2.0.exe";

file = new File(filepath);
System.out.println("File Selected : " + file.getName());
fis = new FileInputStream(file);

fn = file.getName();
fl = (int) file.length();
b = new byte[fl];
System.out.println("Sending file...");
dos.writeUTF(fn);
dos.writeInt(fl);

BufferedInputStream bis = new BufferedInputStream(fis);
bis.read(b, 0, b.length);
bis.close();

dos.write(b, 0, b.length);
dos.flush();
dos.close();
soc.close();
ss.close();
System.out.println("file send");

这是我的客户代码：

try
{
    Socket soc = new Socket("192.168.1.6", 8899);
    str = "Status : connected";
    DataInputStream dis = new DataInputStream(soc.getInputStream());
    String fn = dis.readUTF();
    int fl = dis.readInt();

    File file = new File(Environment.getExternalStorageDirectory() + "/" + fn);
    if (!file.exists())
        file.createNewFile();

    str = "Status : File Receiving...";
    FileOutputStream fos = new FileOutputStream(file);
    byte[] b = new byte[fl];
    dis.readFully(b);
    dis.close();

    fos.write(b);
    fos.flush();
    fos.close();

    soc.close();
    str = "Status : File Received!";
}
catch (Exception e)
{
    err = e.toString();
}