Java 类org.apache.http.client.CircularRedirectException 实例源码

@Test(expected=ClientProtocolException.class)
public void testCircularRedirect() throws Exception {
    this.serverBootstrap.registerHandler("*", new CircularRedirectService());

    final HttpHost target = start();

    final RequestConfig config = RequestConfig.custom()
        .setCircularRedirectsAllowed(false)
        .build();

    final HttpGet httpget = new HttpGet("/circular-oldlocation/");
    httpget.setConfig(config);
    try {
        this.httpclient.execute(target, httpget);
    } catch (final ClientProtocolException e) {
        Assert.assertTrue(e.getCause() instanceof CircularRedirectException);
        throw e;
    }
}

public URI getLocationURI(
        final HttpRequest request,
        final HttpResponse response,
        final HttpContext context) throws ProtocolException {
    Args.notNull(request, "HTTP request");
    Args.notNull(response, "HTTP response");
    Args.notNull(context, "HTTP context");

    final HttpClientContext clientContext = HttpClientContext.adapt(context);

    //get the location header to find out where to redirect to
    final Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine()
                + " but no location header");
    }
    final String location = locationHeader.getValue();
    if (Log.isLoggable(TAG, Log.DEBUG)) {
        Log.d(TAG, "Redirect requested to location '" + location + "'");
    }

    final RequestConfig config = clientContext.getRequestConfig();

    URI uri = createLocationURI(location);

    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        if (!uri.isAbsolute()) {
            if (!config.isRelativeRedirectsAllowed()) {
                throw new ProtocolException("Relative redirect location '"
                        + uri + "' not allowed");
            }
            // Adjust location URI
            final HttpHost target = clientContext.getTargetHost();
            Asserts.notNull(target, "Target host");
            final URI requestURI = new URI(request.getRequestLine().getUri());
            final URI absoluteRequestURI = URIUtilsHC4.rewriteURI(requestURI, target, false);
            uri = URIUtilsHC4.resolve(absoluteRequestURI, uri);
        }
    } catch (final URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocationsHC4 redirectLocations = (RedirectLocationsHC4) clientContext.getAttribute(
            HttpClientContext.REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocationsHC4();
        context.setAttribute(HttpClientContext.REDIRECT_LOCATIONS, redirectLocations);
    }
    if (!config.isCircularRedirectsAllowed()) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}

public URI getLocationURI(
        final HttpRequest request,
        final HttpResponse response,
        final HttpContext context) throws ProtocolException {
    Args.notNull(request, "HTTP request");
    Args.notNull(response, "HTTP response");
    Args.notNull(context, "HTTP context");

    final HttpClientContext clientContext = HttpClientContext.adapt(context);

    //get the location header to find out where to redirect to
    final Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine()
                + " but no location header");
    }
    final String location = locationHeader.getValue();
    if (this.log.isDebugEnabled()) {
        this.log.debug("Redirect requested to location '" + location + "'");
    }

    final RequestConfig config = clientContext.getRequestConfig();

    URI uri = createLocationURI(location);

    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        if (!uri.isAbsolute()) {
            if (!config.isRelativeRedirectsAllowed()) {
                throw new ProtocolException("Relative redirect location '"
                        + uri + "' not allowed");
            }
            // Adjust location URI
            final HttpHost target = clientContext.getTargetHost();
            Asserts.notNull(target, "Target host");
            final URI requestURI = new URI(request.getRequestLine().getUri());
            final URI absoluteRequestURI = URIUtils.rewriteURI(requestURI, target, false);
            uri = URIUtils.resolve(absoluteRequestURI, uri);
        }
    } catch (final URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocations redirectLocations = (RedirectLocations) clientContext.getAttribute(
            HttpClientContext.REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocations();
        context.setAttribute(HttpClientContext.REDIRECT_LOCATIONS, redirectLocations);
    }
    if (!config.isCircularRedirectsAllowed()) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}

public URI getLocationURI(
        final HttpRequest request,
        final HttpResponse response,
        final HttpContext context) throws ProtocolException {
    if (request == null) {
        throw new IllegalArgumentException("HTTP request may not be null");
    }
    if (response == null) {
        throw new IllegalArgumentException("HTTP response may not be null");
    }
    if (context == null) {
        throw new IllegalArgumentException("HTTP context may not be null");
    }
    //get the location header to find out where to redirect to
    Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine()
                + " but no location header");
    }
    String location = locationHeader.getValue();
    if (this.log.isDebugEnabled()) {
        this.log.debug("Redirect requested to location '" + location + "'");
    }

    URI uri = createLocationURI(location);

    HttpParams params = request.getParams();
    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        // Drop fragment
        uri = URIUtils.rewriteURI(uri);
        if (!uri.isAbsolute()) {
            if (params.isParameterTrue(ClientPNames.REJECT_RELATIVE_REDIRECT)) {
                throw new ProtocolException("Relative redirect location '"
                        + uri + "' not allowed");
            }
            // Adjust location URI
            HttpHost target = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
            if (target == null) {
                throw new IllegalStateException("Target host not available " +
                        "in the HTTP context");
            }
            URI requestURI = new URI(request.getRequestLine().getUri());
            URI absoluteRequestURI = URIUtils.rewriteURI(requestURI, target, true);
            uri = URIUtils.resolve(absoluteRequestURI, uri);
        }
    } catch (URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocations redirectLocations = (RedirectLocations) context.getAttribute(
            REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocations();
        context.setAttribute(REDIRECT_LOCATIONS, redirectLocations);
    }
    if (params.isParameterFalse(ClientPNames.ALLOW_CIRCULAR_REDIRECTS)) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}

public URI getLocationURI(
        final HttpRequest request,
        final HttpResponse response,
        final HttpContext context) throws ProtocolException {
    Args.notNull(request, "HTTP request");
    Args.notNull(response, "HTTP response");
    Args.notNull(context, "HTTP context");

    final HttpClientContext clientContext = HttpClientContext.adapt(context);

    //get the location header to find out where to redirect to
    final Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine()
                + " but no location header");
    }
    final String location = locationHeader.getValue();
    if (Log.isLoggable(TAG, Log.DEBUG)) {
        Log.d(TAG, "Redirect requested to location '" + location + "'");
    }

    final RequestConfig config = clientContext.getRequestConfig();

    URI uri = createLocationURI(location);

    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        if (!uri.isAbsolute()) {
            if (!config.isRelativeRedirectsAllowed()) {
                throw new ProtocolException("Relative redirect location '"
                        + uri + "' not allowed");
            }
            // Adjust location URI
            final HttpHost target = clientContext.getTargetHost();
            Asserts.notNull(target, "Target host");
            final URI requestURI = new URI(request.getRequestLine().getUri());
            final URI absoluteRequestURI = URIUtilsHC4.rewriteURI(requestURI, target, false);
            uri = URIUtilsHC4.resolve(absoluteRequestURI, uri);
        }
    } catch (final URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocationsHC4 redirectLocations = (RedirectLocationsHC4) clientContext.getAttribute(
            HttpClientContext.REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocationsHC4();
        context.setAttribute(HttpClientContext.REDIRECT_LOCATIONS, redirectLocations);
    }
    if (!config.isCircularRedirectsAllowed()) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}

public URI getLocationURI(
        final HttpRequest request,
        final HttpResponse response,
        final HttpContext context) throws ProtocolException {
    Args.notNull(request, "HTTP request");
    Args.notNull(response, "HTTP response");
    Args.notNull(context, "HTTP context");

    final HttpClientContext clientContext = HttpClientContext.adapt(context);

    //get the location header to find out where to redirect to
    final Header locationHeader = response.getFirstHeader("location");
    if (locationHeader == null) {
        // got a redirect response, but no location header
        throw new ProtocolException(
                "Received redirect response " + response.getStatusLine()
                + " but no location header");
    }
    final String location = locationHeader.getValue();
    if (Log.isLoggable(TAG, Log.DEBUG)) {
        Log.d(TAG, "Redirect requested to location '" + location + "'");
    }

    final RequestConfig config = clientContext.getRequestConfig();

    URI uri = createLocationURI(location);

    // rfc2616 demands the location value be a complete URI
    // Location       = "Location" ":" absoluteURI
    try {
        if (!uri.isAbsolute()) {
            if (!config.isRelativeRedirectsAllowed()) {
                throw new ProtocolException("Relative redirect location '"
                        + uri + "' not allowed");
            }
            // Adjust location URI
            final HttpHost target = clientContext.getTargetHost();
            Asserts.notNull(target, "Target host");
            final URI requestURI = new URI(request.getRequestLine().getUri());
            final URI absoluteRequestURI = URIUtilsHC4.rewriteURI(requestURI, target, false);
            uri = URIUtilsHC4.resolve(absoluteRequestURI, uri);
        }
    } catch (final URISyntaxException ex) {
        throw new ProtocolException(ex.getMessage(), ex);
    }

    RedirectLocationsHC4 redirectLocations = (RedirectLocationsHC4) clientContext.getAttribute(
            HttpClientContext.REDIRECT_LOCATIONS);
    if (redirectLocations == null) {
        redirectLocations = new RedirectLocationsHC4();
        context.setAttribute(HttpClientContext.REDIRECT_LOCATIONS, redirectLocations);
    }
    if (!config.isCircularRedirectsAllowed()) {
        if (redirectLocations.contains(uri)) {
            throw new CircularRedirectException("Circular redirect to '" + uri + "'");
        }
    }
    redirectLocations.add(uri);
    return uri;
}