| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.coyote; |
| |
| public enum ErrorState { |
| |
| /** |
| * Not in an error state. |
| */ |
| NONE(false, 0, true, true), |
| |
| /** |
| * The current request/response is in an error state and while it is safe to |
| * complete the current response it is not safe to continue to use the |
| * existing connection which must be closed once the response has been |
| * completed. For multiplexed protocols, the channel must be closed when the |
| * current request/response completes but the connection may continue. |
| */ |
| CLOSE_CLEAN(true, 1, true, true), |
| |
| /** |
| * The current request/response is in an error state and it is not safe to |
| * continue to use them. For multiplexed protocols (such as HTTP/2) the |
| * stream/channel must be closed immediately but the connection may |
| * continue. For non-multiplexed protocols (AJP, HTTP/1.x) the current |
| * connection must be closed. |
| */ |
| CLOSE_NOW(true, 2, false, true), |
| |
| /** |
| * An error has been detected that impacts the underlying network |
| * connection. It is not safe to continue using the network connection which |
| * must be closed immediately. For multiplexed protocols (such as HTTP/2) |
| * this impacts all multiplexed channels. |
| */ |
| CLOSE_CONNECTION_NOW(true, 3, false, false); |
| |
| private final boolean error; |
| private final int severity; |
| private final boolean ioAllowed; |
| private final boolean connectionIoAllowed; |
| |
| private ErrorState(boolean error, int severity, boolean ioAllowed, |
| boolean connectionIoAllowed) { |
| this.error = error; |
| this.severity = severity; |
| this.ioAllowed = ioAllowed; |
| this.connectionIoAllowed = connectionIoAllowed; |
| } |
| |
| public boolean isError() { |
| return error; |
| } |
| |
| /** |
| * Compare this ErrorState with the provided ErrorState and return the most |
| * severe. |
| * |
| * @param input The error state to compare to this one |
| * |
| * @return The most severe error state from the the provided error state and |
| * this one |
| */ |
| public ErrorState getMostSevere(ErrorState input) { |
| if (input.severity > this.severity) { |
| return input; |
| } else { |
| return this; |
| } |
| } |
| |
| public boolean isIoAllowed() { |
| return ioAllowed; |
| } |
| |
| public boolean isConnectionIoAllowed() { |
| return connectionIoAllowed; |
| } |
| } |