Examples with HttpException org.apache.http.HttpException used on opensource projects

Example 36 with HttpException

use of org.apache.http.HttpException in project platform_external_apache-http by android.

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);
    RoutedRequest roureq = new RoutedRequest(origWrapper, origRoute);
    long timeout = ConnManagerParams.getTimeout(params);
    int execCount = 0;
    boolean reuse = false;
    HttpResponse response = null;
    boolean done = false;
    try {
        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();
            // 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
                    this.log.debug("Stale connection check");
                    if (managedConn.isStale()) {
                        this.log.debug("Stale connection detected");
                        // BEGIN android-changed
                        try {
                            managedConn.close();
                        } catch (IOException ignored) {
                        // SSLSocket's will throw IOException
                        // because they can't send a "close
                        // notify" protocol message to the
                        // server. Just supresss any
                        // exceptions related to closing the
                        // stale connection.
                        }
                    // END android-changed
                    }
                }
            }
            if (orig instanceof AbortableHttpRequest) {
                ((AbortableHttpRequest) orig).setReleaseTrigger(managedConn);
            }
            // Reopen connection if needed
            if (!managedConn.isOpen()) {
                managedConn.open(route, context, params);
            } else // BEGIN android-added
            {
                // b/3241899 set the per request timeout parameter on reused connections
                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 = (HttpHost) wrapper.getParams().getParameter(ClientPNames.VIRTUAL_HOST);
            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);
            context.setAttribute(ExecutionContext.HTTP_REQUEST, wrapper);
            boolean retrying = true;
            while (retrying) {
                // Increment total exec count (with redirects)
                execCount++;
                // Increment exec count for this particular request
                wrapper.incrementExecCount();
                if (wrapper.getExecCount() > 1 && !wrapper.isRepeatable()) {
                    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");
                    }
                    // BEGIN android-added
                    if ((!route.isSecure()) && (!isCleartextTrafficPermitted(route.getTargetHost().getHostName()))) {
                        throw new IOException("Cleartext traffic not permitted: " + route.getTargetHost());
                    }
                    // END android-added
                    response = requestExec.execute(wrapper, managedConn, context);
                    retrying = false;
                } catch (IOException ex) {
                    this.log.debug("Closing the connection.");
                    managedConn.close();
                    if (retryHandler.retryRequest(ex, execCount, 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");
                    } else {
                        throw ex;
                    }
                    // just re-open connection and re-try the request
                    if (route.getHopCount() == 1) {
                        this.log.debug("Reopening the direct connection.");
                        managedConn.open(route, context, params);
                    } else {
                        // otherwise give up
                        throw ex;
                    }
                }
            }
            // 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);
            }
            RoutedRequest followup = handleResponse(roureq, response, context);
            if (followup == null) {
                done = true;
            } else {
                if (reuse) {
                    this.log.debug("Connection kept alive");
                    // 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;
            }
            userToken = this.userTokenHandler.getUserToken(context);
            context.setAttribute(ClientContext.USER_TOKEN, userToken);
            if (managedConn != 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 ex) {
        abortConnection();
        throw ex;
    } catch (IOException ex) {
        abortConnection();
        throw ex;
    } catch (RuntimeException ex) {
        abortConnection();
        throw ex;
    }
}

Example 37 with HttpException

use of org.apache.http.HttpException in project platform_external_apache-http by android.

the class HttpService method handleRequest.

public void handleRequest(final HttpServerConnection conn, final HttpContext context) throws IOException, HttpException {
    context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
    HttpResponse response = null;
    try {
        HttpRequest request = conn.receiveRequestHeader();
        request.setParams(new DefaultedHttpParams(request.getParams(), this.params));
        ProtocolVersion ver = request.getRequestLine().getProtocolVersion();
        if (!ver.lessEquals(HttpVersion.HTTP_1_1)) {
            // Downgrade protocol version if greater than HTTP/1.1 
            ver = HttpVersion.HTTP_1_1;
        }
        if (request instanceof HttpEntityEnclosingRequest) {
            if (((HttpEntityEnclosingRequest) request).expectContinue()) {
                response = this.responseFactory.newHttpResponse(ver, HttpStatus.SC_CONTINUE, context);
                response.setParams(new DefaultedHttpParams(response.getParams(), this.params));
                if (this.expectationVerifier != null) {
                    try {
                        this.expectationVerifier.verify(request, response, context);
                    } catch (HttpException ex) {
                        response = this.responseFactory.newHttpResponse(HttpVersion.HTTP_1_0, HttpStatus.SC_INTERNAL_SERVER_ERROR, context);
                        response.setParams(new DefaultedHttpParams(response.getParams(), this.params));
                        handleException(ex, response);
                    }
                }
                if (response.getStatusLine().getStatusCode() < 200) {
                    // Send 1xx response indicating the server expections
                    // have been met
                    conn.sendResponseHeader(response);
                    conn.flush();
                    response = null;
                    conn.receiveRequestEntity((HttpEntityEnclosingRequest) request);
                }
            } else {
                conn.receiveRequestEntity((HttpEntityEnclosingRequest) request);
            }
        }
        if (response == null) {
            response = this.responseFactory.newHttpResponse(ver, HttpStatus.SC_OK, context);
            response.setParams(new DefaultedHttpParams(response.getParams(), this.params));
            context.setAttribute(ExecutionContext.HTTP_REQUEST, request);
            context.setAttribute(ExecutionContext.HTTP_RESPONSE, response);
            this.processor.process(request, context);
            doService(request, response, context);
        }
        // Make sure the request content is fully consumed
        if (request instanceof HttpEntityEnclosingRequest) {
            HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
            if (entity != null) {
                entity.consumeContent();
            }
        }
    } catch (HttpException ex) {
        response = this.responseFactory.newHttpResponse(HttpVersion.HTTP_1_0, HttpStatus.SC_INTERNAL_SERVER_ERROR, context);
        response.setParams(new DefaultedHttpParams(response.getParams(), this.params));
        handleException(ex, response);
    }
    this.processor.process(response, context);
    conn.sendResponseHeader(response);
    conn.sendResponseEntity(response);
    conn.flush();
    if (!this.connStrategy.keepAlive(response, context)) {
        conn.close();
    }
}