Java — How to read an unknown number of bytes from an inputStream (socket/socketServer)?

Question

Looking to read in some bytes over a socket using an inputStream. The bytes sent by the server may be of variable quantity, and the client doesn\'t know in advance the lengt

Answer 1

Stream all Input data into Output stream. Here is working example:

    InputStream inputStream = null;
    byte[] tempStorage = new byte[1024];//try to read 1Kb at time
    int bLength;
    try{

        ByteArrayOutputStream outputByteArrayStream =  new ByteArrayOutputStream();     
        if (fileName.startsWith("http"))
            inputStream = new URL(fileName).openStream();
        else
            inputStream = new FileInputStream(fileName);            

        while ((bLength = inputStream.read(tempStorage)) != -1) {
                outputByteArrayStream.write(tempStorage, 0, bLength);
        }
        outputByteArrayStream.flush();
        //Here is the byte array at the end
        byte[] finalByteArray = outputByteArrayStream.toByteArray();
        outputByteArrayStream.close();
        inputStream.close();
    }catch(Exception e){
        e.printStackTrace();
        if (inputStream != null) inputStream.close();
    }