Examples of java.net.ProxySelector

java.net.ProxySelector
Selects the proxy server to use, if any, when connecting to the network resource referenced by a URL. A proxy selector is a concrete sub-class of this class and is registered by invoking the {@link java.net.ProxySelector#setDefault setDefault} method. Thecurrently registered proxy selector can be retrieved by calling {@link java.net.ProxySelector#getDefault getDefault} method.
When a proxy selector is registered, for instance, a subclass of URLConnection class should call the {@link #select select}method for each URL request so that the proxy selector can decide if a direct, or proxied connection should be used. The {@link #select select} method returns an iterator over a collection withthe preferred connection approach.
If a connection cannot be established to a proxy (PROXY or SOCKS) servers then the caller should call the proxy selector's {@link #connectFailed connectFailed} method to notify the proxyselector that the proxy server is unavailable.
@version 1.3, 03/08/09 @author Yingxian Wang @author Jean-Christophe Collet @since 1.5

    assertThat(HttpDownloader.BaseHttpDownloader.getProxySynthesis(new URI("http://an_url"), proxySelector)).isEqualTo("no proxy");
  }


  @Test
  public void shouldGetProxySynthesis() throws URISyntaxException {
    ProxySelector proxySelector = mock(ProxySelector.class);
    when(proxySelector.select(any(URI.class))).thenReturn(Arrays.<Proxy>asList(new FakeProxy()));
    assertThat(HttpDownloader.BaseHttpDownloader.getProxySynthesis(new URI("http://an_url"), proxySelector)).isEqualTo("HTTP proxy: /123.45.67.89:4040");
  }

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        } catch (URISyntaxException e) {
            LOGGER.log(Level.WARNING, String.format("Invalid proxy '%s'.", proxyString), e);
        }


        // ProxySelector
        final ProxySelector proxySelector = ProxySelector.getDefault();


        // see WebSocket Protocol RFC, chapter 4.1.3: http://tools.ietf.org/html/rfc6455#section-4.1
        addProxies(proxySelector, uri, "socket", proxies);
        addProxies(proxySelector, uri, "https", proxies);
        addProxies(proxySelector, uri, "http", proxies);

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        }
    }


    // @Test(groups = { "standalone", "default_provider" })
    public void testUseProxySelector() throws IOException, ExecutionException, TimeoutException, InterruptedException {
        ProxySelector originalProxySelector = ProxySelector.getDefault();
        try {
            ProxySelector.setDefault(new ProxySelector() {
                public List<Proxy> select(URI uri) {
                    if (uri.getHost().equals("127.0.0.1")) {
                        return Arrays.asList(new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", port1)));
                    } else {
                        return Arrays.asList(Proxy.NO_PROXY);

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                                new SSLSocketFactory(SslUtil.createGullibleSslContext(),
                                        SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER)));
            }


            // set proxy uri
            ProxySelector proxySelector;
            // first look in config
            URI proxyUri = config.getProxyUri();
            if (proxyUri != null) {
                proxySelector = new ConfigProxySelector(config);
            } else {

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        GitProxyService proxyService = gitProxyService.get();
        defaultProxySelector = ProxySelector.getDefault();
        
        // authenticator disabled, until properly tested it does not affect others, as Authenticator is static in the JVM
        // Authenticator.setDefault(new FabricGitLocalHostAuthenticator(proxyService));
        ProxySelector fabricProxySelector = new FabricGitLocalHostProxySelector(defaultProxySelector, proxyService);
        ProxySelector.setDefault(fabricProxySelector);
        LOGGER.debug("Setting up FabricProxySelector: {}", fabricProxySelector);


        if (gitRemoteUrl != null) {
            gitListener.runRemoteUrlChanged(gitRemoteUrl);

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      if (proxySettings == null)
      {
         // There is no proxy configured
         return;
      }
      ProxySelector defaultSelector = ProxySelector.getDefault();
      if (defaultSelector instanceof ForgeProxySelector)
      {
         defaultSelector = ((ForgeProxySelector) defaultSelector).getDefaultProxySelector();
      }
      ForgeProxySelector selector = new ForgeProxySelector(defaultSelector, proxySettings);

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            throw new WebServiceException("Illegal endpoint address: "+url,e);
        }
    }


    private Proxy chooseProxy() {
        ProxySelector sel =
            java.security.AccessController.doPrivileged(
                new java.security.PrivilegedAction<ProxySelector>() {
                    public ProxySelector run() {
                        return ProxySelector.getDefault();
                    }
                });


        if(sel==null)
            return Proxy.NO_PROXY;




        if(!sel.getClass().getName().equals("sun.net.spi.DefaultProxySelector"))
            // user-defined proxy. may return a different proxy for each invocation
            return null;


        Iterator<Proxy> it = sel.select(uri).iterator();
        if(it.hasNext())
            return it.next();


        return Proxy.NO_PROXY;
    }

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        Main.pref.put(PROXY_HTTP_PORT, tfProxyHttpPort.getText());
        Main.pref.put(PROXY_SOCKS_HOST, tfProxySocksHost.getText());
        Main.pref.put(PROXY_SOCKS_PORT, tfProxySocksPort.getText());


        // update the proxy selector
        ProxySelector selector = ProxySelector.getDefault();
        if (selector instanceof DefaultProxySelector) {
            ((DefaultProxySelector)selector).initFromPreferences();
        }


        CredentialsAgent cm = CredentialsManager.getInstance();

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                                      HttpRequest request,
                                      HttpContext context)
        throws HttpException {


        // the proxy selector can be 'unset', so we better deal with null here
        ProxySelector psel = this.proxySelector;
        if (psel == null)
            psel = ProxySelector.getDefault();
        if (psel == null)
            return null;


        URI targetURI = null;
        try {
            targetURI = new URI(target.toURI());
        } catch (URISyntaxException usx) {
            throw new HttpException
                ("Cannot convert host to URI: " + target, usx);
        }
        List<Proxy> proxies = psel.select(targetURI);


        Proxy p = chooseProxy(proxies, target, request, context);


        HttpHost result = null;
        if (p.type() == Proxy.Type.HTTP) {

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            throw new WebServiceException("Illegal endpoint address: "+url,e);
        }
    }


    private Proxy chooseProxy() {
        ProxySelector sel =
            java.security.AccessController.doPrivileged(
                new java.security.PrivilegedAction<ProxySelector>() {
                    @Override
                    public ProxySelector run() {
                        return ProxySelector.getDefault();
                    }
                });


        if(sel==null)
            return Proxy.NO_PROXY;




        if(!sel.getClass().getName().equals("sun.net.spi.DefaultProxySelector"))
            // user-defined proxy. may return a different proxy for each invocation
            return null;


        Iterator<Proxy> it = sel.select(uri).iterator();
        if(it.hasNext())
            return it.next();


        return Proxy.NO_PROXY;
    }

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