package com.github.davidmoten.aws.lw.client.internal.auth;
   
   import java.io.BufferedReader;
   import java.io.IOException;
   import java.io.InputStream;
   import java.io.InputStreamReader;
   import java.net.HttpURLConnection;
   import java.net.URL;
   import java.nio.charset.StandardCharsets;
  import java.util.Map;
  
  import com.github.davidmoten.aws.lw.client.internal.util.Util;
  
  /**
   * Various Http helper routines
   */
  public class HttpUtils {
  
      private static final int CONNECT_TIMEOUT_MS = 30000;
      private static final int READ_TIMEOUT_MS = 5 * 60000;
  
      public static String executeHttpRequest(HttpURLConnection connection) {
          try {
              // Get Response
              InputStream is;
              try {
                  is = connection.getInputStream();
              } catch (IOException e) {
                  is = connection.getErrorStream();
              }
  
              try (BufferedReader rd = new BufferedReader(
                      new InputStreamReader(is, StandardCharsets.UTF_8))) {
                  String line;
                  StringBuffer response = new StringBuffer();
                  while ((line = rd.readLine()) != null) {
                      response.append(line);
                      response.append('\r');
                  }
                  return response.toString();
              }
          } catch (IOException | RuntimeException e) {
              throw new RuntimeException("Request failed. " + e.getMessage(), e);
          } finally {
              if (connection != null) {
                  connection.disconnect();
              }
          }
      }
  
      public static HttpURLConnection createHttpConnection(URL endpointUrl, String httpMethod,
              Map<String, String> headers) throws IOException {
          return Util.createHttpConnection(endpointUrl, httpMethod, headers, CONNECT_TIMEOUT_MS,
                  READ_TIMEOUT_MS);
      }
  
  }