I was going through this post in stack exchange How can I code a Bitcoin JSON-RPC “getwork” request in Java?

I tried to write a simple snippet for just the getwork json rpc.

public static void main(String[] args) throws Exception {      String request = "{\"method\": \"getwork\", \"params\": [], \"id\":0}";     URL url = new URL("https://de01.supportxmr.com:7777");      HttpURLConnection conn = (HttpURLConnection) url.openConnection();     if (conn .getConnectTimeout() == 0)         conn.setConnectTimeout(1000);     if (conn.getReadTimeout() == 0)         conn.setReadTimeout(1000);     conn.setRequestMethod("POST");     String encoded = Base64.getEncoder().encodeToString(("<my_wallet_addr>:x").getBytes(StandardCharsets.UTF_8));  //Java 8     conn.setRequestProperty("Authorization", "Basic "+encoded);     conn.setRequestProperty("Accept", "application/json");     conn.setRequestProperty("Content-Type", "application/json");     conn.setRequestProperty("Content-Length", Integer.toString(request.getBytes().length));     conn.setRequestProperty("X-Mining-Extensions", "midstate");     conn.setAllowUserInteraction(false);     conn.setUseCaches(false);     conn.setDoOutput(true);      DataOutputStream wr = new DataOutputStream(conn.getOutputStream());     wr.writeBytes(request);     wr.close();      InputStream is = conn.getInputStream();     ByteArrayOutputStream bos = new ByteArrayOutputStream();     int len;     byte[] buffer = new byte[4096];     while ((len = is.read(buffer)) != -1) {         bos.write(buffer, 0, len);     }     String content = bos.toString();     is.close();      System.out.println(content);  } 

when I run this code, I get an error

Exception in thread "main" java.net.SocketException: Unexpected end of file from server at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:792) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:647) at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:789) at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:647) at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1536) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441) at org.litecoinpool.miner.Test.main(Test.java:42) 

What am I missing here? Is stratum proxy necessary to be running on the machine? If so how do I specify the parameters to run in the java code?