fix: handle external timeout error with status code 531

Author: sathish Ramesh

http/src/main/java/com/mx/path/connect/http/HttpClientFilter.java

@@ -3,6 +3,7 @@
 import java.io.EOFException;
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.net.SocketTimeoutException;
 import java.net.URISyntaxException;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -42,6 +43,7 @@
 import org.apache.http.client.entity.UrlEncodedFormEntity;
 import org.apache.http.client.methods.RequestBuilder;
 import org.apache.http.client.utils.URIBuilder;
+import org.apache.http.conn.ConnectTimeoutException;
 import org.apache.http.conn.HttpHostConnectException;
 import org.apache.http.conn.ssl.NoopHostnameVerifier;
 import org.apache.http.entity.ByteArrayEntity;
@@ -65,6 +67,7 @@ public class HttpClientFilter extends RequestFilterBase {
    * instead of converting it to a String.
    */
   private static final List<String> RAW_BODY_CONTENT_TYPE_HINTS = Arrays.asList("image", "pdf", "msword");
+  private static final int HTTP_STATUS_EXTERNAL_TIMEOUT = 531;
 
   private static GsonBuilder gsonBuilder = new GsonBuilder();
   private static final Gson GSON = gsonBuilder
@@ -157,6 +160,12 @@ public final void execute(Request request, Response response) {
           } finally {
             response.finish();
           }
+        } catch (ConnectTimeoutException e) {
+          httpResponse.setStatus(HttpStatus.valueOf(HTTP_STATUS_EXTERNAL_TIMEOUT));
+          throw new ConnectException("Connection timeout: " + e.getMessage(), e);
+        } catch (SocketTimeoutException e) {
+          httpResponse.setStatus(HttpStatus.valueOf(HTTP_STATUS_EXTERNAL_TIMEOUT));
+          throw new ConnectException("Read timeout: " + e.getMessage(), e);
         } catch (SSLHandshakeException e) {
           throw new HttpClientConnectException("SSL handshake failed", e);
         } catch (SSLException e) {