1/* 2 * Copyright (C) 2015 Square, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package com.squareup.okhttp.internal.http; 17 18import java.io.IOException; 19import java.lang.reflect.InvocationTargetException; 20import java.lang.reflect.Method; 21 22/** 23 * An exception thrown to indicate a problem connecting via a single Route. Multiple attempts may 24 * have been made with alternative protocols, none of which were successful. 25 */ 26public final class RouteException extends Exception { 27 private static final Method addSuppressedExceptionMethod; 28 static { 29 Method m; 30 try { 31 m = Throwable.class.getDeclaredMethod("addSuppressed", Throwable.class); 32 } catch (Exception e) { 33 m = null; 34 } 35 addSuppressedExceptionMethod = m; 36 } 37 private IOException lastException; 38 39 public RouteException(IOException cause) { 40 super(cause); 41 lastException = cause; 42 } 43 44 public IOException getLastConnectException() { 45 return lastException; 46 } 47 48 public void addConnectException(IOException e) { 49 addSuppressedIfPossible(e, lastException); 50 lastException = e; 51 } 52 53 private void addSuppressedIfPossible(IOException e, IOException suppressed) { 54 if (addSuppressedExceptionMethod != null) { 55 try { 56 addSuppressedExceptionMethod.invoke(e, suppressed); 57 } catch (InvocationTargetException | IllegalAccessException ignored) { 58 } 59 } 60 } 61} 62