| // HttpURLConnection.java - Subclass of communications links using |
| // Hypertext Transfer Protocol. |
| |
| /* Copyright (C) 1999, 2000 Free Software Foundation |
| |
| This file is part of libgcj. |
| |
| This software is copyrighted work licensed under the terms of the |
| Libgcj License. Please consult the file "LIBGCJ_LICENSE" for |
| details. */ |
| |
| package java.net; |
| |
| import java.io.*; |
| |
| /** |
| * @author Warren Levy <warrenl@cygnus.com> |
| * @date March 29, 1999. |
| */ |
| |
| /** |
| * Written using on-line Java Platform 1.2 API Specification, as well |
| * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998). |
| * Status: Believed complete and correct. |
| */ |
| |
| public abstract class HttpURLConnection extends URLConnection |
| { |
| /* HTTP Success Response Codes */ |
| public static final int HTTP_OK = 200; |
| public static final int HTTP_CREATED = 201; |
| public static final int HTTP_ACCEPTED = 202; |
| public static final int HTTP_NOT_AUTHORITATIVE = 203; |
| public static final int HTTP_NO_CONTENT = 204; |
| public static final int HTTP_RESET = 205; |
| public static final int HTTP_PARTIAL = 206; |
| |
| /* HTTP Redirection Response Codes */ |
| public static final int HTTP_MULT_CHOICE = 300; |
| public static final int HTTP_MOVED_PERM = 301; |
| public static final int HTTP_MOVED_TEMP = 302; |
| public static final int HTTP_SEE_OTHER = 303; |
| public static final int HTTP_NOT_MODIFIED = 304; |
| public static final int HTTP_USE_PROXY = 305; |
| |
| /* HTTP Client Error Response Codes */ |
| public static final int HTTP_BAD_REQUEST = 400; |
| public static final int HTTP_UNAUTHORIZED = 401; |
| public static final int HTTP_PAYMENT_REQUIRED = 402; |
| public static final int HTTP_FORBIDDEN = 403; |
| public static final int HTTP_NOT_FOUND = 404; |
| public static final int HTTP_BAD_METHOD = 405; |
| public static final int HTTP_NOT_ACCEPTABLE = 406; |
| public static final int HTTP_PROXY_AUTH = 407; |
| public static final int HTTP_CLIENT_TIMEOUT = 408; |
| public static final int HTTP_CONFLICT = 409; |
| public static final int HTTP_GONE = 410; |
| public static final int HTTP_LENGTH_REQUIRED = 411; |
| public static final int HTTP_PRECON_FAILED = 412; |
| public static final int HTTP_ENTITY_TOO_LARGE = 413; |
| public static final int HTTP_REQ_TOO_LONG = 414; |
| public static final int HTTP_UNSUPPORTED_TYPE = 415; |
| |
| /* HTTP Server Error Response Codes */ |
| public static final int HTTP_SERVER_ERROR = 500; |
| public static final int HTTP_INTERNAL_ERROR = 501; |
| public static final int HTTP_BAD_GATEWAY = 502; |
| public static final int HTTP_UNAVAILABLE = 503; |
| public static final int HTTP_GATEWAY_TIMEOUT = 504; |
| public static final int HTTP_VERSION = 505; |
| |
| static boolean followRedirects = true; |
| |
| protected String method = "GET"; |
| protected int responseCode = -1; |
| protected String responseMessage; |
| protected boolean instanceFollowRedirects = followRedirects; |
| |
| private boolean gotResponseVals = false; |
| |
| protected HttpURLConnection(URL url) |
| { |
| super(url); |
| } |
| |
| public abstract void disconnect(); |
| |
| public abstract boolean usingProxy(); |
| |
| public static void setFollowRedirects(boolean set) |
| { |
| // Throw an exception if an extant security mgr precludes |
| // setting the factory. |
| SecurityManager s = System.getSecurityManager(); |
| if (s != null) |
| s.checkSetFactory(); |
| |
| followRedirects = set; |
| } |
| |
| public static boolean getFollowRedirects() |
| { |
| return followRedirects; |
| } |
| |
| public void setRequestMethod(String method) throws ProtocolException |
| { |
| if (connected) |
| throw new ProtocolException("Already connected"); |
| |
| if (method.equals("GET") || method.equals("POST") || |
| method.equals("HEAD") || method.equals("OPTIONS") || |
| method.equals("PUT") || method.equals("DELETE") || |
| method.equals("TRACE")) |
| this.method = method; |
| else |
| throw new ProtocolException("Invalid HTTP request method"); |
| } |
| |
| public String getRequestMethod() |
| { |
| return method; |
| } |
| |
| public int getResponseCode() throws IOException |
| { |
| if (!gotResponseVals) |
| getResponseVals(); |
| return responseCode; |
| } |
| |
| public String getResponseMessage() throws IOException |
| { |
| if (!gotResponseVals) |
| getResponseVals(); |
| return responseMessage; |
| } |
| |
| private void getResponseVals() throws IOException |
| { |
| // getHeaderField() will connect for us, but do it here first in |
| // order to pick up IOExceptions. |
| if (!connected) |
| connect(); |
| |
| gotResponseVals = true; |
| // Response is the first header received from the connection. |
| String respField = getHeaderField(0); |
| |
| if (respField == null || ! respField.startsWith("HTTP/")) |
| { |
| // Set to default values on failure. |
| responseCode = -1; |
| responseMessage = null; |
| return; |
| } |
| |
| int firstSpc, nextSpc; |
| firstSpc = respField.indexOf(' '); |
| nextSpc = respField.indexOf(' ', firstSpc + 1); |
| responseMessage = respField.substring(nextSpc + 1); |
| String codeStr = respField.substring(firstSpc + 1, nextSpc); |
| try |
| { |
| responseCode = Integer.parseInt(codeStr); |
| } |
| catch (NumberFormatException e) |
| { |
| // Set to default values on failure. |
| responseCode = -1; |
| responseMessage = null; |
| } |
| } |
| |
| // TODO12: public Permission getPermission() throws IOException |
| // { |
| // } |
| |
| // TODO12: public InputStream getErrorStream() |
| // { |
| // } |
| } |