Examples with TunnelRefusedException org.apache.http.impl.client.TunnelRefusedException used on opensource projects

Example 1 with TunnelRefusedException

use of org.apache.http.impl.client.TunnelRefusedException in project robolectric by robolectric.

the class DefaultRequestDirector method execute.

// non-javadoc, see interface ClientRequestDirector
@Override
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 2 with TunnelRefusedException

use of org.apache.http.impl.client.TunnelRefusedException in project robolectric by robolectric.

the class DefaultRequestDirector method createTunnelToTarget.

// establishConnection
/**
 * Creates a tunnel to the target server.
 * The connection must be established to the (last) proxy.
 * A CONNECT request for tunnelling through the proxy will
 * be created and sent, the response received and checked.
 * This method does <i>not</i> update the connection with
 * information about the tunnel, that is left to the caller.
 *
 * @param route     the route to establish
 * @param context   the context for request execution
 *
 * @return  {@code true} if the tunnelled route is secure,
 *          {@code false} otherwise.
 *          The implementation here always returns {@code false},
 *          but derived classes may override.
 *
 * @throws HttpException    in case of a problem
 * @throws IOException      in case of an IO problem
 */
protected boolean createTunnelToTarget(HttpRoute route, HttpContext context) throws HttpException, IOException {
    HttpHost proxy = route.getProxyHost();
    HttpHost target = route.getTargetHost();
    HttpResponse response = null;
    boolean done = false;
    while (!done) {
        done = true;
        if (!this.managedConn.isOpen()) {
            this.managedConn.open(route, context, this.params);
        }
        HttpRequest connect = createConnectRequest(route, context);
        connect.setParams(this.params);
        // 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);
        context.setAttribute(ExecutionContext.HTTP_REQUEST, connect);
        this.requestExec.preProcess(connect, this.httpProcessor, context);
        response = this.requestExec.execute(connect, this.managedConn, context);
        response.setParams(this.params);
        this.requestExec.postProcess(response, this.httpProcessor, context);
        int status = response.getStatusLine().getStatusCode();
        if (status < 200) {
            throw new HttpException("Unexpected response to CONNECT request: " + response.getStatusLine());
        }
        CredentialsProvider credsProvider = (CredentialsProvider) context.getAttribute(ClientContext.CREDS_PROVIDER);
        if (credsProvider != null && HttpClientParams.isAuthenticating(params)) {
            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());
                        break;
                    }
                }
                updateAuthState(this.proxyAuthState, proxy, credsProvider);
                if (this.proxyAuthState.getCredentials() != null) {
                    done = false;
                    // Retry request
                    if (this.reuseStrategy.keepAlive(response, context)) {
                        this.log.debug("Connection kept alive");
                        // Consume response content
                        HttpEntity entity = response.getEntity();
                        if (entity != null) {
                            entity.consumeContent();
                        }
                    } else {
                        this.managedConn.close();
                    }
                }
            } else {
                // Reset proxy auth scope
                this.proxyAuthState.setAuthScope(null);
            }
        }
    }
    // can't be null
    int status = response.getStatusLine().getStatusCode();
    if (status > 299) {
        // Buffer response content
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            response.setEntity(new BufferedHttpEntity(entity));
        }
        this.managedConn.close();
        throw new TunnelRefusedException("CONNECT refused by proxy: " + response.getStatusLine(), response);
    }
    this.managedConn.markReusable();
    // Leave it to derived classes, consider insecure by default here.
    return false;
}