HttpURLConnection does not read the whole response

Question

I use HttpURLConnection to do HTTP POST but I dont always get back the full response. I wanted to debug the problem, but when I step through each line it worked. I thought it mu

Answer 1

If you are reading the whole Message at once you can compare the isr.available() to the expected content lenght. This is how I did it:

public byte[] readData(HttpURLConnection conn)
        throws IOException, InterruptedException {
    String _connlen = conn.getHeaderField("Content-Length");
    int connlen = Integer.parseInt(_connlen);
    InputStream isr = null;
    byte[] bytes = new byte[connlen];

    try {
        isr = conn.getInputStream();

        //security count that it doesn't begin to hang
        int maxcounter = 0;
        //wait till all data is avalibal, max 5sec
        while((isr.available() != connlen) && (maxcounter  < 5000)){
            Thread.sleep(1);
            maxcounter++;
        }
        //Throw if not all data could be read
        if(maxcounter >= 5000)
            throw new IllegalAccessError(); 

        //read the data         
        if(isr.read(bytes, 0, connlen) < 0)
            throw new IllegalAccessError();     


    } finally {
        if (isr != null)
            isr.close();
    }

    return bytes;
}