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

I think your problem is in this line:

while (is.available() > 0) {

According to the javadoc, available does not block and wait until all data is available, so you might get the first packet and then it will return false. The proper way to read from an InputStream is like this:

int len;
byte[] buffer = new byte[4096];
while (-1 != (len = in.read(buffer))) {
  bos.write(buffer, 0, len);
}

Read will return -1 when there nothing left in the inputstream or the connection is closed, and it will block and wait for the network while doing so. Reading arrays is also much more performant than using single bytes.