Fell into infinite loop while receiving file using datainputstream and bufferedinputstream

Question

I am trying to build a server program that receives file from client using DataInputStream and BufferedInputStream.

Here's my code and it falls into infinite loop, I think it's because of not using available() but I am not really sure.

DataInputStream din = new DataInputStream(new BufferedInputStream(s.getInputStream()));
//s is socket that connects fine
fos = new FileOutputStream(directory+"/"+filename);

byte b[] = new byte[512]; 
int readByte = din.read(b);
while(readByte != 1){
    fos.write(b);
    readByte = din.read(b);
    //System.out.println("infinite loop...");
}

Can anyone tell me why it falls into infinite loop? if it is because of not using available , would you please tell me how to use it? I actually googled, but I was confused with the usage. Thank you very much

Answer 1

I think you want to do while(readByte != -1). See the documentation (-1 means there is nothing more to read).

Response to Comment

This works for me:

FileInputStream in = new FileInputStream(new File("C:\\Users\\Rachel\\Desktop\\Test.txt"));
DataInputStream din = new DataInputStream(new BufferedInputStream(in));
FileOutputStream fos = new FileOutputStream("C:\\Users\\Rachel\\Desktop\\MyOtherFile.txt");

byte b[] = new byte[512]; 
while(din.read(b) != -1){
    fos.write(b);
}

System.out.println("Got out");