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package sun.net.www.protocol.gopher;

import java.io.*;
import java.util.*;
import sun.net.NetworkClient;
import java.net.URL;
import java.net.URLStreamHandler;
import java.net.Proxy;
import java.net.InetSocketAddress;
import java.net.SocketPermission;
import java.security.Permission;
import sun.net.www.protocol.http.HttpURLConnection;

A class to handle the gopher protocol.
/** * A class to handle the gopher protocol. */
public class Handler extends java.net.URLStreamHandler { protected int getDefaultPort() { return 70; } public java.net.URLConnection openConnection(URL u) throws IOException { return openConnection(u, null); } public java.net.URLConnection openConnection(URL u, Proxy p) throws IOException { /* if set for proxy usage then go through the http code to get */ /* the url connection. */ if (p == null && GopherClient.getUseGopherProxy()) { String host = GopherClient.getGopherProxyHost(); if (host != null) { InetSocketAddress saddr = InetSocketAddress.createUnresolved(host, GopherClient.getGopherProxyPort()); p = new Proxy(Proxy.Type.HTTP, saddr); } } if (p != null) { return new HttpURLConnection(u, p); } return new GopherURLConnection(u); } } class GopherURLConnection extends sun.net.www.URLConnection { Permission permission; GopherURLConnection(URL u) { super(u); } public void connect() throws IOException { } public InputStream getInputStream() throws IOException { return new GopherClient(this).openStream(url); } public Permission getPermission() { if (permission == null) { int port = url.getPort(); port = port < 0 ? 70 : port; String host = url.getHost() + ":" + url.getPort(); permission = new SocketPermission(host, "connect"); } return permission; } }