Examples with HttpRoute org.apache.http.conn.routing.HttpRoute used on opensource projects

Example 6 with HttpRoute

use of org.apache.http.conn.routing.HttpRoute in project robovm by robovm.

the class DefaultRequestDirector method handleResponse.

/**
     * Analyzes a response to check need for a followup.
     *
     * @param roureq    the request and route. 
     * @param response  the response to analayze
     * @param context   the context used for the current request execution
     *
     * @return  the followup request and route if there is a followup, or
     *          <code>null</code> if the response should be returned as is
     *
     * @throws HttpException    in case of a problem
     * @throws IOException      in case of an IO problem
     */
protected RoutedRequest handleResponse(RoutedRequest roureq, HttpResponse response, HttpContext context) throws HttpException, IOException {
    HttpRoute route = roureq.getRoute();
    HttpHost proxy = route.getProxyHost();
    RequestWrapper request = roureq.getRequest();
    HttpParams params = request.getParams();
    if (HttpClientParams.isRedirecting(params) && this.redirectHandler.isRedirectRequested(response, context)) {
        if (redirectCount >= maxRedirects) {
            throw new RedirectException("Maximum redirects (" + maxRedirects + ") exceeded");
        }
        redirectCount++;
        URI uri = this.redirectHandler.getLocationURI(response, context);
        HttpHost newTarget = new HttpHost(uri.getHost(), uri.getPort(), uri.getScheme());
        HttpGet redirect = new HttpGet(uri);
        HttpRequest orig = request.getOriginal();
        redirect.setHeaders(orig.getAllHeaders());
        RequestWrapper wrapper = new RequestWrapper(redirect);
        wrapper.setParams(params);
        HttpRoute newRoute = determineRoute(newTarget, wrapper, context);
        RoutedRequest newRequest = new RoutedRequest(wrapper, newRoute);
        if (this.log.isDebugEnabled()) {
            this.log.debug("Redirecting to '" + uri + "' via " + newRoute);
        }
        return newRequest;
    }
    CredentialsProvider credsProvider = (CredentialsProvider) context.getAttribute(ClientContext.CREDS_PROVIDER);
    if (credsProvider != null && HttpClientParams.isAuthenticating(params)) {
        if (this.targetAuthHandler.isAuthenticationRequested(response, context)) {
            HttpHost target = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
            if (target == null) {
                target = route.getTargetHost();
            }
            this.log.debug("Target requested authentication");
            Map<String, Header> challenges = this.targetAuthHandler.getChallenges(response, context);
            try {
                processChallenges(challenges, this.targetAuthState, this.targetAuthHandler, response, context);
            } catch (AuthenticationException ex) {
                if (this.log.isWarnEnabled()) {
                    this.log.warn("Authentication error: " + ex.getMessage());
                    return null;
                }
            }
            updateAuthState(this.targetAuthState, target, credsProvider);
            if (this.targetAuthState.getCredentials() != null) {
                // Re-try the same request via the same route
                return roureq;
            } else {
                return null;
            }
        } else {
            // Reset target auth scope
            this.targetAuthState.setAuthScope(null);
        }
        if (this.proxyAuthHandler.isAuthenticationRequested(response, context)) {
            this.log.debug("Proxy requested authentication");
            Map<String, Header> challenges = this.proxyAuthHandler.getChallenges(response, context);
            try {
                processChallenges(challenges, this.proxyAuthState, this.proxyAuthHandler, response, context);
            } catch (AuthenticationException ex) {
                if (this.log.isWarnEnabled()) {
                    this.log.warn("Authentication error: " + ex.getMessage());
                    return null;
                }
            }
            updateAuthState(this.proxyAuthState, proxy, credsProvider);
            if (this.proxyAuthState.getCredentials() != null) {
                // Re-try the same request via the same route
                return roureq;
            } else {
                return null;
            }
        } else {
            // Reset proxy auth scope
            this.proxyAuthState.setAuthScope(null);
        }
    }
    return null;
}

Example 7 with HttpRoute

use of org.apache.http.conn.routing.HttpRoute in project robolectric by robolectric.

the class DefaultRequestDirector method execute.

// non-javadoc, see interface ClientRequestDirector
public HttpResponse execute(HttpHost target, HttpRequest request, HttpContext context) throws HttpException, IOException {
    HttpRequest orig = request;
    RequestWrapper origWrapper = wrapRequest(orig);
    origWrapper.setParams(params);
    HttpRoute origRoute = determineRoute(target, origWrapper, context);
    virtualHost = (HttpHost) orig.getParams().getParameter(ClientPNames.VIRTUAL_HOST);
    RoutedRequest roureq = new RoutedRequest(origWrapper, origRoute);
    long timeout = ConnManagerParams.getTimeout(params);
    int execCount = 0;
    boolean reuse = false;
    boolean done = false;
    try {
        HttpResponse response = null;
        while (!done) {
            // In this loop, the RoutedRequest may be replaced by a
            // followup request and route. The request and route passed
            // in the method arguments will be replaced. The original
            // request is still available in 'orig'.
            RequestWrapper wrapper = roureq.getRequest();
            HttpRoute route = roureq.getRoute();
            response = null;
            // See if we have a user token bound to the execution context
            Object userToken = context.getAttribute(ClientContext.USER_TOKEN);
            // Allocate connection if needed
            if (managedConn == null) {
                ClientConnectionRequest connRequest = connManager.requestConnection(route, userToken);
                if (orig instanceof AbortableHttpRequest) {
                    ((AbortableHttpRequest) orig).setConnectionRequest(connRequest);
                }
                try {
                    managedConn = connRequest.getConnection(timeout, TimeUnit.MILLISECONDS);
                } catch (InterruptedException interrupted) {
                    InterruptedIOException iox = new InterruptedIOException();
                    iox.initCause(interrupted);
                    throw iox;
                }
                if (HttpConnectionParams.isStaleCheckingEnabled(params)) {
                    // validate connection
                    if (managedConn.isOpen()) {
                        this.log.debug("Stale connection check");
                        if (managedConn.isStale()) {
                            this.log.debug("Stale connection detected");
                            managedConn.close();
                        }
                    }
                }
            }
            if (orig instanceof AbortableHttpRequest) {
                ((AbortableHttpRequest) orig).setReleaseTrigger(managedConn);
            }
            // Reopen connection if needed
            if (!managedConn.isOpen()) {
                managedConn.open(route, context, params);
            } else {
                managedConn.setSocketTimeout(HttpConnectionParams.getSoTimeout(params));
            }
            try {
                establishRoute(route, context);
            } catch (TunnelRefusedException ex) {
                if (this.log.isDebugEnabled()) {
                    this.log.debug(ex.getMessage());
                }
                response = ex.getResponse();
                break;
            }
            // Reset headers on the request wrapper
            wrapper.resetHeaders();
            // Re-write request URI if needed
            rewriteRequestURI(wrapper, route);
            // Use virtual host if set
            target = virtualHost;
            if (target == null) {
                target = route.getTargetHost();
            }
            HttpHost proxy = route.getProxyHost();
            // Populate the execution context
            context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, target);
            context.setAttribute(ExecutionContext.HTTP_PROXY_HOST, proxy);
            context.setAttribute(ExecutionContext.HTTP_CONNECTION, managedConn);
            context.setAttribute(ClientContext.TARGET_AUTH_STATE, targetAuthState);
            context.setAttribute(ClientContext.PROXY_AUTH_STATE, proxyAuthState);
            // Run request protocol interceptors
            requestExec.preProcess(wrapper, httpProcessor, context);
            boolean retrying = true;
            Exception retryReason = null;
            while (retrying) {
                // Increment total exec count (with redirects)
                execCount++;
                // Increment exec count for this particular request
                wrapper.incrementExecCount();
                if (!wrapper.isRepeatable()) {
                    this.log.debug("Cannot retry non-repeatable request");
                    if (retryReason != null) {
                        throw new NonRepeatableRequestException("Cannot retry request " + "with a non-repeatable request entity.  The cause lists the " + "reason the original request failed: " + retryReason);
                    } else {
                        throw new NonRepeatableRequestException("Cannot retry request " + "with a non-repeatable request entity.");
                    }
                }
                try {
                    if (this.log.isDebugEnabled()) {
                        this.log.debug("Attempt " + execCount + " to execute request");
                    }
                    response = requestExec.execute(wrapper, managedConn, context);
                    retrying = false;
                } catch (IOException ex) {
                    this.log.debug("Closing the connection.");
                    managedConn.close();
                    if (retryHandler.retryRequest(ex, wrapper.getExecCount(), context)) {
                        if (this.log.isInfoEnabled()) {
                            this.log.info("I/O exception (" + ex.getClass().getName() + ") caught when processing request: " + ex.getMessage());
                        }
                        if (this.log.isDebugEnabled()) {
                            this.log.debug(ex.getMessage(), ex);
                        }
                        this.log.info("Retrying request");
                        retryReason = ex;
                    } else {
                        throw ex;
                    }
                    // just re-open connection and re-try the request
                    if (!route.isTunnelled()) {
                        this.log.debug("Reopening the direct connection.");
                        managedConn.open(route, context, params);
                    } else {
                        // otherwise give up
                        this.log.debug("Proxied connection. Need to start over.");
                        retrying = false;
                    }
                }
            }
            if (response == null) {
                // Need to start over
                continue;
            }
            // Run response protocol interceptors
            response.setParams(params);
            requestExec.postProcess(response, httpProcessor, context);
            // The connection is in or can be brought to a re-usable state.
            reuse = reuseStrategy.keepAlive(response, context);
            if (reuse) {
                // Set the idle duration of this connection
                long duration = keepAliveStrategy.getKeepAliveDuration(response, context);
                managedConn.setIdleDuration(duration, TimeUnit.MILLISECONDS);
                if (this.log.isDebugEnabled()) {
                    if (duration >= 0) {
                        this.log.debug("Connection can be kept alive for " + duration + " ms");
                    } else {
                        this.log.debug("Connection can be kept alive indefinitely");
                    }
                }
            }
            RoutedRequest followup = handleResponse(roureq, response, context);
            if (followup == null) {
                done = true;
            } else {
                if (reuse) {
                    // Make sure the response body is fully consumed, if present
                    HttpEntity entity = response.getEntity();
                    if (entity != null) {
                        entity.consumeContent();
                    }
                    // entity consumed above is not an auto-release entity,
                    // need to mark the connection re-usable explicitly
                    managedConn.markReusable();
                } else {
                    managedConn.close();
                }
                // check if we can use the same connection for the followup
                if (!followup.getRoute().equals(roureq.getRoute())) {
                    releaseConnection();
                }
                roureq = followup;
            }
            if (managedConn != null && userToken == null) {
                userToken = userTokenHandler.getUserToken(context);
                context.setAttribute(ClientContext.USER_TOKEN, userToken);
                if (userToken != null) {
                    managedConn.setState(userToken);
                }
            }
        }
        // check for entity, release connection if possible
        if ((response == null) || (response.getEntity() == null) || !response.getEntity().isStreaming()) {
            // connection not needed and (assumed to be) in re-usable state
            if (reuse)
                managedConn.markReusable();
            releaseConnection();
        } else {
            // install an auto-release entity
            HttpEntity entity = response.getEntity();
            entity = new BasicManagedEntity(entity, managedConn, reuse);
            response.setEntity(entity);
        }
        return response;
    } catch (HttpException | RuntimeException | IOException ex) {
        abortConnection();
        throw ex;
    }
}

Example 8 with HttpRoute

use of org.apache.http.conn.routing.HttpRoute in project robolectric by robolectric.

the class DefaultRequestDirector method establishRoute.

/**
   * Establishes the target route.
   *
   * @param route     the route to establish
   * @param context   the context for the request execution
   *
   * @throws HttpException    in case of a problem
   * @throws IOException      in case of an IO problem
   */
protected void establishRoute(HttpRoute route, HttpContext context) throws HttpException, IOException {
    HttpRouteDirector rowdy = new BasicRouteDirector();
    int step;
    do {
        HttpRoute fact = managedConn.getRoute();
        step = rowdy.nextStep(route, fact);
        switch(step) {
            case HttpRouteDirector.CONNECT_TARGET:
            case HttpRouteDirector.CONNECT_PROXY:
                managedConn.open(route, context, this.params);
                break;
            case HttpRouteDirector.TUNNEL_TARGET:
                {
                    boolean secure = createTunnelToTarget(route, context);
                    this.log.debug("Tunnel to target created.");
                    managedConn.tunnelTarget(secure, this.params);
                }
                break;
            case HttpRouteDirector.TUNNEL_PROXY:
                {
                    // The most simple example for this case is a proxy chain
                    // of two proxies, where P1 must be tunnelled to P2.
                    // route: Source -> P1 -> P2 -> Target (3 hops)
                    // fact:  Source -> P1 -> Target       (2 hops)
                    // the hop to establish
                    final int hop = fact.getHopCount() - 1;
                    boolean secure = createTunnelToProxy(route, hop, context);
                    this.log.debug("Tunnel to proxy created.");
                    managedConn.tunnelProxy(route.getHopTarget(hop), secure, this.params);
                }
                break;
            case HttpRouteDirector.LAYER_PROTOCOL:
                managedConn.layerProtocol(context, this.params);
                break;
            case HttpRouteDirector.UNREACHABLE:
                throw new IllegalStateException("Unable to establish route." + "\nplanned = " + route + "\ncurrent = " + fact);
            case HttpRouteDirector.COMPLETE:
                // do nothing
                break;
            default:
                throw new IllegalStateException("Unknown step indicator " + step + " from RouteDirector.");
        }
    // switch
    } while (step > HttpRouteDirector.COMPLETE);
}

Example 9 with HttpRoute

use of org.apache.http.conn.routing.HttpRoute in project XobotOS by xamarin.

the class ProxySelectorRoutePlanner method determineRoute.

// non-javadoc, see interface HttpRoutePlanner
public HttpRoute determineRoute(HttpHost target, HttpRequest request, HttpContext context) throws HttpException {
    if (request == null) {
        throw new IllegalStateException("Request must not be null.");
    }
    // If we have a forced route, we can do without a target.
    HttpRoute route = ConnRouteParams.getForcedRoute(request.getParams());
    if (route != null)
        return route;
    if (target == null) {
        throw new IllegalStateException("Target host must not be null.");
    }
    final InetAddress local = ConnRouteParams.getLocalAddress(request.getParams());
    // BEGIN android-changed
    //     If the client or request explicitly specifies a proxy (or no
    //     proxy), prefer that over the ProxySelector's VM-wide default.
    HttpHost proxy = (HttpHost) request.getParams().getParameter(ConnRoutePNames.DEFAULT_PROXY);
    if (proxy == null) {
        proxy = determineProxy(target, request, context);
    } else if (ConnRouteParams.NO_HOST.equals(proxy)) {
        // value is explicitly unset
        proxy = null;
    }
    // END android-changed
    final Scheme schm = this.schemeRegistry.getScheme(target.getSchemeName());
    // as it is typically used for TLS/SSL, we assume that
    // a layered scheme implies a secure connection
    final boolean secure = schm.isLayered();
    if (proxy == null) {
        route = new HttpRoute(target, local, secure);
    } else {
        route = new HttpRoute(target, local, proxy, secure);
    }
    return route;
}

Example 10 with HttpRoute

use of org.apache.http.conn.routing.HttpRoute in project XobotOS by xamarin.

the class AbstractConnPool method handleReference.

// non-javadoc, see interface RefQueueHandler
// BEGIN android-changed
public void handleReference(Reference ref) {
    // END android-changed
    poolLock.lock();
    try {
        if (ref instanceof BasicPoolEntryRef) {
            // check if the GCed pool entry was still in use
            //@@@ find a way to detect this without lookup
            //@@@ flag in the BasicPoolEntryRef, to be reset when freed?
            final boolean lost = issuedConnections.remove(ref);
            if (lost) {
                final HttpRoute route = ((BasicPoolEntryRef) ref).getRoute();
                if (log.isDebugEnabled()) {
                    log.debug("Connection garbage collected. " + route);
                }
                handleLostEntry(route);
            }
        }
    } finally {
        poolLock.unlock();
    }
}