4c64c98f34
Motivation: We can replace some "hand-rolled" integer checks with our own static utility method to simplify the code. Modifications: Use methods provided by `ObjectUtil`. Result: Cleaner code and less duplication
648 lines
20 KiB
Java
648 lines
20 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufUtil;
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import io.netty.util.AsciiString;
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import io.netty.util.CharsetUtil;
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import static io.netty.handler.codec.http.HttpConstants.SP;
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import static io.netty.util.ByteProcessor.FIND_ASCII_SPACE;
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import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
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import static java.lang.Integer.parseInt;
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/**
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* The response code and its description of HTTP or its derived protocols, such as
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* <a href="http://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol">RTSP</a> and
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* <a href="http://en.wikipedia.org/wiki/Internet_Content_Adaptation_Protocol">ICAP</a>.
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*/
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public class HttpResponseStatus implements Comparable<HttpResponseStatus> {
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/**
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* 100 Continue
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*/
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public static final HttpResponseStatus CONTINUE = newStatus(100, "Continue");
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/**
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* 101 Switching Protocols
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*/
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public static final HttpResponseStatus SWITCHING_PROTOCOLS = newStatus(101, "Switching Protocols");
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/**
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* 102 Processing (WebDAV, RFC2518)
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*/
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public static final HttpResponseStatus PROCESSING = newStatus(102, "Processing");
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/**
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* 200 OK
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*/
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public static final HttpResponseStatus OK = newStatus(200, "OK");
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/**
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* 201 Created
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*/
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public static final HttpResponseStatus CREATED = newStatus(201, "Created");
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/**
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* 202 Accepted
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*/
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public static final HttpResponseStatus ACCEPTED = newStatus(202, "Accepted");
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/**
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* 203 Non-Authoritative Information (since HTTP/1.1)
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*/
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public static final HttpResponseStatus NON_AUTHORITATIVE_INFORMATION =
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newStatus(203, "Non-Authoritative Information");
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/**
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* 204 No Content
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*/
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public static final HttpResponseStatus NO_CONTENT = newStatus(204, "No Content");
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/**
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* 205 Reset Content
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*/
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public static final HttpResponseStatus RESET_CONTENT = newStatus(205, "Reset Content");
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/**
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* 206 Partial Content
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*/
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public static final HttpResponseStatus PARTIAL_CONTENT = newStatus(206, "Partial Content");
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/**
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* 207 Multi-Status (WebDAV, RFC2518)
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*/
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public static final HttpResponseStatus MULTI_STATUS = newStatus(207, "Multi-Status");
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/**
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* 300 Multiple Choices
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*/
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public static final HttpResponseStatus MULTIPLE_CHOICES = newStatus(300, "Multiple Choices");
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/**
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* 301 Moved Permanently
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*/
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public static final HttpResponseStatus MOVED_PERMANENTLY = newStatus(301, "Moved Permanently");
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/**
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* 302 Found
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*/
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public static final HttpResponseStatus FOUND = newStatus(302, "Found");
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/**
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* 303 See Other (since HTTP/1.1)
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*/
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public static final HttpResponseStatus SEE_OTHER = newStatus(303, "See Other");
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/**
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* 304 Not Modified
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*/
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public static final HttpResponseStatus NOT_MODIFIED = newStatus(304, "Not Modified");
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/**
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* 305 Use Proxy (since HTTP/1.1)
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*/
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public static final HttpResponseStatus USE_PROXY = newStatus(305, "Use Proxy");
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/**
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* 307 Temporary Redirect (since HTTP/1.1)
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*/
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public static final HttpResponseStatus TEMPORARY_REDIRECT = newStatus(307, "Temporary Redirect");
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/**
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* 308 Permanent Redirect (RFC7538)
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*/
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public static final HttpResponseStatus PERMANENT_REDIRECT = newStatus(308, "Permanent Redirect");
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/**
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* 400 Bad Request
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*/
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public static final HttpResponseStatus BAD_REQUEST = newStatus(400, "Bad Request");
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/**
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* 401 Unauthorized
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*/
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public static final HttpResponseStatus UNAUTHORIZED = newStatus(401, "Unauthorized");
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/**
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* 402 Payment Required
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*/
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public static final HttpResponseStatus PAYMENT_REQUIRED = newStatus(402, "Payment Required");
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/**
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* 403 Forbidden
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*/
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public static final HttpResponseStatus FORBIDDEN = newStatus(403, "Forbidden");
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/**
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* 404 Not Found
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*/
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public static final HttpResponseStatus NOT_FOUND = newStatus(404, "Not Found");
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/**
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* 405 Method Not Allowed
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*/
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public static final HttpResponseStatus METHOD_NOT_ALLOWED = newStatus(405, "Method Not Allowed");
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/**
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* 406 Not Acceptable
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*/
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public static final HttpResponseStatus NOT_ACCEPTABLE = newStatus(406, "Not Acceptable");
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/**
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* 407 Proxy Authentication Required
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*/
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public static final HttpResponseStatus PROXY_AUTHENTICATION_REQUIRED =
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newStatus(407, "Proxy Authentication Required");
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/**
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* 408 Request Timeout
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*/
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public static final HttpResponseStatus REQUEST_TIMEOUT = newStatus(408, "Request Timeout");
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/**
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* 409 Conflict
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*/
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public static final HttpResponseStatus CONFLICT = newStatus(409, "Conflict");
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/**
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* 410 Gone
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*/
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public static final HttpResponseStatus GONE = newStatus(410, "Gone");
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/**
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* 411 Length Required
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*/
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public static final HttpResponseStatus LENGTH_REQUIRED = newStatus(411, "Length Required");
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/**
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* 412 Precondition Failed
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*/
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public static final HttpResponseStatus PRECONDITION_FAILED = newStatus(412, "Precondition Failed");
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/**
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* 413 Request Entity Too Large
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*/
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public static final HttpResponseStatus REQUEST_ENTITY_TOO_LARGE =
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newStatus(413, "Request Entity Too Large");
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/**
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* 414 Request-URI Too Long
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*/
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public static final HttpResponseStatus REQUEST_URI_TOO_LONG = newStatus(414, "Request-URI Too Long");
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/**
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* 415 Unsupported Media Type
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*/
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public static final HttpResponseStatus UNSUPPORTED_MEDIA_TYPE = newStatus(415, "Unsupported Media Type");
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/**
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* 416 Requested Range Not Satisfiable
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*/
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public static final HttpResponseStatus REQUESTED_RANGE_NOT_SATISFIABLE =
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newStatus(416, "Requested Range Not Satisfiable");
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/**
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* 417 Expectation Failed
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*/
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public static final HttpResponseStatus EXPECTATION_FAILED = newStatus(417, "Expectation Failed");
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/**
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* 421 Misdirected Request
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*
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* <a href="https://tools.ietf.org/html/draft-ietf-httpbis-http2-15#section-9.1.2">421 Status Code</a>
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*/
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public static final HttpResponseStatus MISDIRECTED_REQUEST = newStatus(421, "Misdirected Request");
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/**
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* 422 Unprocessable Entity (WebDAV, RFC4918)
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*/
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public static final HttpResponseStatus UNPROCESSABLE_ENTITY = newStatus(422, "Unprocessable Entity");
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/**
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* 423 Locked (WebDAV, RFC4918)
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*/
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public static final HttpResponseStatus LOCKED = newStatus(423, "Locked");
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/**
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* 424 Failed Dependency (WebDAV, RFC4918)
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*/
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public static final HttpResponseStatus FAILED_DEPENDENCY = newStatus(424, "Failed Dependency");
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/**
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* 425 Unordered Collection (WebDAV, RFC3648)
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*/
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public static final HttpResponseStatus UNORDERED_COLLECTION = newStatus(425, "Unordered Collection");
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/**
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* 426 Upgrade Required (RFC2817)
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*/
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public static final HttpResponseStatus UPGRADE_REQUIRED = newStatus(426, "Upgrade Required");
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/**
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* 428 Precondition Required (RFC6585)
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*/
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public static final HttpResponseStatus PRECONDITION_REQUIRED = newStatus(428, "Precondition Required");
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/**
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* 429 Too Many Requests (RFC6585)
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*/
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public static final HttpResponseStatus TOO_MANY_REQUESTS = newStatus(429, "Too Many Requests");
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/**
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* 431 Request Header Fields Too Large (RFC6585)
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*/
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public static final HttpResponseStatus REQUEST_HEADER_FIELDS_TOO_LARGE =
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newStatus(431, "Request Header Fields Too Large");
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/**
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* 500 Internal Server Error
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*/
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public static final HttpResponseStatus INTERNAL_SERVER_ERROR = newStatus(500, "Internal Server Error");
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/**
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* 501 Not Implemented
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*/
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public static final HttpResponseStatus NOT_IMPLEMENTED = newStatus(501, "Not Implemented");
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/**
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* 502 Bad Gateway
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*/
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public static final HttpResponseStatus BAD_GATEWAY = newStatus(502, "Bad Gateway");
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/**
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* 503 Service Unavailable
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*/
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public static final HttpResponseStatus SERVICE_UNAVAILABLE = newStatus(503, "Service Unavailable");
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/**
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* 504 Gateway Timeout
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*/
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public static final HttpResponseStatus GATEWAY_TIMEOUT = newStatus(504, "Gateway Timeout");
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/**
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* 505 HTTP Version Not Supported
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*/
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public static final HttpResponseStatus HTTP_VERSION_NOT_SUPPORTED =
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newStatus(505, "HTTP Version Not Supported");
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/**
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* 506 Variant Also Negotiates (RFC2295)
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*/
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public static final HttpResponseStatus VARIANT_ALSO_NEGOTIATES = newStatus(506, "Variant Also Negotiates");
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/**
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* 507 Insufficient Storage (WebDAV, RFC4918)
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*/
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public static final HttpResponseStatus INSUFFICIENT_STORAGE = newStatus(507, "Insufficient Storage");
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/**
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* 510 Not Extended (RFC2774)
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*/
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public static final HttpResponseStatus NOT_EXTENDED = newStatus(510, "Not Extended");
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/**
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* 511 Network Authentication Required (RFC6585)
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*/
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public static final HttpResponseStatus NETWORK_AUTHENTICATION_REQUIRED =
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newStatus(511, "Network Authentication Required");
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private static HttpResponseStatus newStatus(int statusCode, String reasonPhrase) {
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return new HttpResponseStatus(statusCode, reasonPhrase, true);
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}
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/**
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* Returns the {@link HttpResponseStatus} represented by the specified code.
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* If the specified code is a standard HTTP status code, a cached instance
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* will be returned. Otherwise, a new instance will be returned.
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*/
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public static HttpResponseStatus valueOf(int code) {
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HttpResponseStatus status = valueOf0(code);
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return status != null ? status : new HttpResponseStatus(code);
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}
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private static HttpResponseStatus valueOf0(int code) {
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switch (code) {
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case 100:
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return CONTINUE;
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case 101:
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return SWITCHING_PROTOCOLS;
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case 102:
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return PROCESSING;
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case 200:
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return OK;
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case 201:
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return CREATED;
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case 202:
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return ACCEPTED;
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case 203:
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return NON_AUTHORITATIVE_INFORMATION;
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case 204:
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return NO_CONTENT;
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case 205:
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return RESET_CONTENT;
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case 206:
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return PARTIAL_CONTENT;
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case 207:
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return MULTI_STATUS;
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case 300:
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return MULTIPLE_CHOICES;
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case 301:
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return MOVED_PERMANENTLY;
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case 302:
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return FOUND;
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case 303:
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return SEE_OTHER;
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case 304:
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return NOT_MODIFIED;
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case 305:
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return USE_PROXY;
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case 307:
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return TEMPORARY_REDIRECT;
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case 308:
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return PERMANENT_REDIRECT;
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case 400:
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return BAD_REQUEST;
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case 401:
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return UNAUTHORIZED;
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case 402:
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return PAYMENT_REQUIRED;
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case 403:
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return FORBIDDEN;
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case 404:
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return NOT_FOUND;
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case 405:
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return METHOD_NOT_ALLOWED;
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case 406:
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return NOT_ACCEPTABLE;
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case 407:
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return PROXY_AUTHENTICATION_REQUIRED;
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case 408:
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return REQUEST_TIMEOUT;
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case 409:
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return CONFLICT;
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case 410:
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return GONE;
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case 411:
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return LENGTH_REQUIRED;
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case 412:
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return PRECONDITION_FAILED;
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case 413:
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return REQUEST_ENTITY_TOO_LARGE;
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case 414:
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return REQUEST_URI_TOO_LONG;
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case 415:
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return UNSUPPORTED_MEDIA_TYPE;
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case 416:
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return REQUESTED_RANGE_NOT_SATISFIABLE;
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case 417:
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return EXPECTATION_FAILED;
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case 421:
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return MISDIRECTED_REQUEST;
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case 422:
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return UNPROCESSABLE_ENTITY;
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case 423:
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return LOCKED;
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case 424:
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return FAILED_DEPENDENCY;
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case 425:
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return UNORDERED_COLLECTION;
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case 426:
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return UPGRADE_REQUIRED;
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case 428:
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return PRECONDITION_REQUIRED;
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case 429:
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return TOO_MANY_REQUESTS;
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case 431:
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return REQUEST_HEADER_FIELDS_TOO_LARGE;
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case 500:
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return INTERNAL_SERVER_ERROR;
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case 501:
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return NOT_IMPLEMENTED;
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case 502:
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return BAD_GATEWAY;
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case 503:
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return SERVICE_UNAVAILABLE;
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case 504:
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return GATEWAY_TIMEOUT;
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case 505:
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return HTTP_VERSION_NOT_SUPPORTED;
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case 506:
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return VARIANT_ALSO_NEGOTIATES;
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case 507:
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return INSUFFICIENT_STORAGE;
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case 510:
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return NOT_EXTENDED;
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case 511:
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return NETWORK_AUTHENTICATION_REQUIRED;
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}
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return null;
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}
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/**
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* Returns the {@link HttpResponseStatus} represented by the specified {@code code} and {@code reasonPhrase}.
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* If the specified code is a standard HTTP status {@code code} and {@code reasonPhrase}, a cached instance
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* will be returned. Otherwise, a new instance will be returned.
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* @param code The response code value.
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* @param reasonPhrase The response code reason phrase.
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* @return the {@link HttpResponseStatus} represented by the specified {@code code} and {@code reasonPhrase}.
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*/
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public static HttpResponseStatus valueOf(int code, String reasonPhrase) {
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HttpResponseStatus responseStatus = valueOf0(code);
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return responseStatus != null && responseStatus.reasonPhrase().contentEquals(reasonPhrase) ? responseStatus :
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new HttpResponseStatus(code, reasonPhrase);
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}
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/**
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* Parses the specified HTTP status line into a {@link HttpResponseStatus}. The expected formats of the line are:
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* <ul>
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* <li>{@code statusCode} (e.g. 200)</li>
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* <li>{@code statusCode} {@code reasonPhrase} (e.g. 404 Not Found)</li>
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* </ul>
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*
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* @throws IllegalArgumentException if the specified status line is malformed
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*/
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public static HttpResponseStatus parseLine(CharSequence line) {
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return (line instanceof AsciiString) ? parseLine((AsciiString) line) : parseLine(line.toString());
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}
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/**
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* Parses the specified HTTP status line into a {@link HttpResponseStatus}. The expected formats of the line are:
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* <ul>
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* <li>{@code statusCode} (e.g. 200)</li>
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* <li>{@code statusCode} {@code reasonPhrase} (e.g. 404 Not Found)</li>
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* </ul>
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*
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* @throws IllegalArgumentException if the specified status line is malformed
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*/
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public static HttpResponseStatus parseLine(String line) {
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try {
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int space = line.indexOf(' ');
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return space == -1 ? valueOf(parseInt(line)) :
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valueOf(parseInt(line.substring(0, space)), line.substring(space + 1));
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} catch (Exception e) {
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throw new IllegalArgumentException("malformed status line: " + line, e);
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}
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}
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/**
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* Parses the specified HTTP status line into a {@link HttpResponseStatus}. The expected formats of the line are:
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* <ul>
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* <li>{@code statusCode} (e.g. 200)</li>
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* <li>{@code statusCode} {@code reasonPhrase} (e.g. 404 Not Found)</li>
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* </ul>
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*
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* @throws IllegalArgumentException if the specified status line is malformed
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*/
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public static HttpResponseStatus parseLine(AsciiString line) {
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try {
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int space = line.forEachByte(FIND_ASCII_SPACE);
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return space == -1 ? valueOf(line.parseInt()) : valueOf(line.parseInt(0, space), line.toString(space + 1));
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} catch (Exception e) {
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throw new IllegalArgumentException("malformed status line: " + line, e);
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}
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}
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private final int code;
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private final AsciiString codeAsText;
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private HttpStatusClass codeClass;
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private final String reasonPhrase;
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private final byte[] bytes;
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/**
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* Creates a new instance with the specified {@code code} and the auto-generated default reason phrase.
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*/
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private HttpResponseStatus(int code) {
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this(code, HttpStatusClass.valueOf(code).defaultReasonPhrase() + " (" + code + ')', false);
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}
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/**
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* Creates a new instance with the specified {@code code} and its {@code reasonPhrase}.
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*/
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public HttpResponseStatus(int code, String reasonPhrase) {
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this(code, reasonPhrase, false);
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}
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private HttpResponseStatus(int code, String reasonPhrase, boolean bytes) {
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checkPositiveOrZero(code, "code");
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if (reasonPhrase == null) {
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throw new NullPointerException("reasonPhrase");
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}
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|
|
|
for (int i = 0; i < reasonPhrase.length(); i ++) {
|
|
char c = reasonPhrase.charAt(i);
|
|
// Check prohibited characters.
|
|
switch (c) {
|
|
case '\n': case '\r':
|
|
throw new IllegalArgumentException(
|
|
"reasonPhrase contains one of the following prohibited characters: " +
|
|
"\\r\\n: " + reasonPhrase);
|
|
}
|
|
}
|
|
|
|
this.code = code;
|
|
String codeString = Integer.toString(code);
|
|
codeAsText = new AsciiString(codeString);
|
|
this.reasonPhrase = reasonPhrase;
|
|
if (bytes) {
|
|
this.bytes = (codeString + ' ' + reasonPhrase).getBytes(CharsetUtil.US_ASCII);
|
|
} else {
|
|
this.bytes = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the code of this {@link HttpResponseStatus}.
|
|
*/
|
|
public int code() {
|
|
return code;
|
|
}
|
|
|
|
/**
|
|
* Returns the status code as {@link AsciiString}.
|
|
*/
|
|
public AsciiString codeAsText() {
|
|
return codeAsText;
|
|
}
|
|
|
|
/**
|
|
* Returns the reason phrase of this {@link HttpResponseStatus}.
|
|
*/
|
|
public String reasonPhrase() {
|
|
return reasonPhrase;
|
|
}
|
|
|
|
/**
|
|
* Returns the class of this {@link HttpResponseStatus}
|
|
*/
|
|
public HttpStatusClass codeClass() {
|
|
HttpStatusClass type = this.codeClass;
|
|
if (type == null) {
|
|
this.codeClass = type = HttpStatusClass.valueOf(code);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return code();
|
|
}
|
|
|
|
/**
|
|
* Equality of {@link HttpResponseStatus} only depends on {@link #code()}. The
|
|
* reason phrase is not considered for equality.
|
|
*/
|
|
@Override
|
|
public boolean equals(Object o) {
|
|
if (!(o instanceof HttpResponseStatus)) {
|
|
return false;
|
|
}
|
|
|
|
return code() == ((HttpResponseStatus) o).code();
|
|
}
|
|
|
|
/**
|
|
* Equality of {@link HttpResponseStatus} only depends on {@link #code()}. The
|
|
* reason phrase is not considered for equality.
|
|
*/
|
|
@Override
|
|
public int compareTo(HttpResponseStatus o) {
|
|
return code() - o.code();
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return new StringBuilder(reasonPhrase.length() + 4)
|
|
.append(codeAsText)
|
|
.append(' ')
|
|
.append(reasonPhrase)
|
|
.toString();
|
|
}
|
|
|
|
void encode(ByteBuf buf) {
|
|
if (bytes == null) {
|
|
ByteBufUtil.copy(codeAsText, buf);
|
|
buf.writeByte(SP);
|
|
buf.writeCharSequence(reasonPhrase, CharsetUtil.US_ASCII);
|
|
} else {
|
|
buf.writeBytes(bytes);
|
|
}
|
|
}
|
|
}
|