rest - java.io.IOException: unexpected end of stream on Connection in android

Question

I have web service URL, it working fine. It gives the JSON data.

When I am using HttpURLConnection and InputStream, I am getting this error:

java.io.IOException: unexpected end of stream on
Connection{comenius-api.sabacloud.com:443, proxy=DIRECT
hostAddress=12.130.57.1
cipherSuite=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 protocol=http/1.1}
(recycle count=0)

My code:

try {
    URL url = new URL("https://comenius-api.sabacloud.com/v1/people/username=" + username + ":(internalWorkHistory)?type=internal&SabaCertificate=" + certificate);

    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    InputStream ist = con.getInputStream();
    BufferedReader reader = new BufferedReader(new InputStreamReader(ist));

    while ((singleLine = reader.readLine()) != null) {
        data = data + singleLine;
        Log.e("Response", data);
    }

} catch (Exception e) {
    e.printStackTrace();
}

How to fix this?

Answer 1

I had the same problem using OKHttp3. The problem was that I didn't close the connection for each request and for the client the same connection was available and for the server not, for this reason the server returns a error.

The solution is indicating to each request to close the connection when it is finished. You have to add a flag in the header to indicate this. In OKHttp3 is like this:

Request request = new Request.Builder()
                             .url(URL)
                             .header("Connection", "close")
                             ...