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

Example 26 with HttpException

use of org.apache.http.HttpException in project android_frameworks_base by ParanoidAndroid.

the class SSLConnectionClosedByUserException method openConnection.

/**
     * Opens the connection to a http server or proxy.
     *
     * @return the opened low level connection
     * @throws IOException if the connection fails for any reason.
     */
@Override
AndroidHttpClientConnection openConnection(Request req) throws IOException {
    SSLSocket sslSock = null;
    if (mProxyHost != null) {
        // If we have a proxy set, we first send a CONNECT request
        // to the proxy; if the proxy returns 200 OK, we negotiate
        // a secure connection to the target server via the proxy.
        // If the request fails, we drop it, but provide the event
        // handler with the response status and headers. The event
        // handler is then responsible for cancelling the load or
        // issueing a new request.
        AndroidHttpClientConnection proxyConnection = null;
        Socket proxySock = null;
        try {
            proxySock = new Socket(mProxyHost.getHostName(), mProxyHost.getPort());
            proxySock.setSoTimeout(60 * 1000);
            proxyConnection = new AndroidHttpClientConnection();
            HttpParams params = new BasicHttpParams();
            HttpConnectionParams.setSocketBufferSize(params, 8192);
            proxyConnection.bind(proxySock, params);
        } catch (IOException e) {
            if (proxyConnection != null) {
                proxyConnection.close();
            }
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to establish a connection to the proxy";
            }
            throw new IOException(errorMessage);
        }
        StatusLine statusLine = null;
        int statusCode = 0;
        Headers headers = new Headers();
        try {
            BasicHttpRequest proxyReq = new BasicHttpRequest("CONNECT", mHost.toHostString());
            // 400 Bad Request
            for (Header h : req.mHttpRequest.getAllHeaders()) {
                String headerName = h.getName().toLowerCase();
                if (headerName.startsWith("proxy") || headerName.equals("keep-alive") || headerName.equals("host")) {
                    proxyReq.addHeader(h);
                }
            }
            proxyConnection.sendRequestHeader(proxyReq);
            proxyConnection.flush();
            // a loop is a standard way of dealing with them
            do {
                statusLine = proxyConnection.parseResponseHeader(headers);
                statusCode = statusLine.getStatusCode();
            } while (statusCode < HttpStatus.SC_OK);
        } catch (ParseException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        } catch (HttpException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        } catch (IOException e) {
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to send a CONNECT request";
            }
            throw new IOException(errorMessage);
        }
        if (statusCode == HttpStatus.SC_OK) {
            try {
                sslSock = (SSLSocket) getSocketFactory().createSocket(proxySock, mHost.getHostName(), mHost.getPort(), true);
            } catch (IOException e) {
                if (sslSock != null) {
                    sslSock.close();
                }
                String errorMessage = e.getMessage();
                if (errorMessage == null) {
                    errorMessage = "failed to create an SSL socket";
                }
                throw new IOException(errorMessage);
            }
        } else {
            // if the code is not OK, inform the event handler
            ProtocolVersion version = statusLine.getProtocolVersion();
            req.mEventHandler.status(version.getMajor(), version.getMinor(), statusCode, statusLine.getReasonPhrase());
            req.mEventHandler.headers(headers);
            req.mEventHandler.endData();
            proxyConnection.close();
            // request needs to be dropped
            return null;
        }
    } else {
        // if we do not have a proxy, we simply connect to the host
        try {
            sslSock = (SSLSocket) getSocketFactory().createSocket(mHost.getHostName(), mHost.getPort());
            sslSock.setSoTimeout(SOCKET_TIMEOUT);
        } catch (IOException e) {
            if (sslSock != null) {
                sslSock.close();
            }
            String errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "failed to create an SSL socket";
            }
            throw new IOException(errorMessage);
        }
    }
    // do handshake and validate server certificates
    SslError error = CertificateChainValidator.getInstance().doHandshakeAndValidateServerCertificates(this, sslSock, mHost.getHostName());
    // Inform the user if there is a problem
    if (error != null) {
        // need to.
        synchronized (mSuspendLock) {
            mSuspended = true;
        }
        // don't hold the lock while calling out to the event handler
        boolean canHandle = req.getEventHandler().handleSslErrorRequest(error);
        if (!canHandle) {
            throw new IOException("failed to handle " + error);
        }
        synchronized (mSuspendLock) {
            if (mSuspended) {
                try {
                    // Put a limit on how long we are waiting; if the timeout
                    // expires (which should never happen unless you choose
                    // to ignore the SSL error dialog for a very long time),
                    // we wake up the thread and abort the request. This is
                    // to prevent us from stalling the network if things go
                    // very bad.
                    mSuspendLock.wait(10 * 60 * 1000);
                    if (mSuspended) {
                        // mSuspended is true if we have not had a chance to
                        // restart the connection yet (ie, the wait timeout
                        // has expired)
                        mSuspended = false;
                        mAborted = true;
                        if (HttpLog.LOGV) {
                            HttpLog.v("HttpsConnection.openConnection():" + " SSL timeout expired and request was cancelled!!!");
                        }
                    }
                } catch (InterruptedException e) {
                // ignore
                }
            }
            if (mAborted) {
                // The user decided not to use this unverified connection
                // so close it immediately.
                sslSock.close();
                throw new SSLConnectionClosedByUserException("connection closed by the user");
            }
        }
    }
    // All went well, we have an open, verified connection.
    AndroidHttpClientConnection conn = new AndroidHttpClientConnection();
    BasicHttpParams params = new BasicHttpParams();
    params.setIntParameter(HttpConnectionParams.SOCKET_BUFFER_SIZE, 8192);
    conn.bind(sslSock, params);
    return conn;
}

Example 27 with HttpException

use of org.apache.http.HttpException in project robovm by robovm.

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();
    }
}

Example 28 with HttpException

use of org.apache.http.HttpException in project robovm by robovm.

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</code> if the tunnelled route is secure,
     *          <code>false</code> otherwise.
     *          The implementation here always returns <code>false</code>,
     *          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);
        String agent = HttpProtocolParams.getUserAgent(params);
        if (agent != null) {
            connect.addHeader(HTTP.USER_AGENT, agent);
        }
        connect.addHeader(HTTP.TARGET_HOST, target.toHostString());
        AuthScheme authScheme = this.proxyAuthState.getAuthScheme();
        AuthScope authScope = this.proxyAuthState.getAuthScope();
        Credentials creds = this.proxyAuthState.getCredentials();
        if (creds != null) {
            if (authScope != null || !authScheme.isConnectionBased()) {
                try {
                    connect.addHeader(authScheme.authenticate(creds, connect));
                } catch (AuthenticationException ex) {
                    if (this.log.isErrorEnabled()) {
                        this.log.error("Proxy authentication error: " + ex.getMessage());
                    }
                }
            }
        }
        response = requestExec.execute(connect, this.managedConn, 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);
            }
        }
    }
    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;
}

Example 29 with HttpException

use of org.apache.http.HttpException in project robovm by robovm.

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");
                    }
                    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 30 with HttpException

use of org.apache.http.HttpException in project robovm by robovm.

the class ProxySelectorRoutePlanner method determineProxy.

/**
     * Determines a proxy for the given target.
     *
     * @param target    the planned target, never <code>null</code>
     * @param request   the request to be sent, never <code>null</code>
     * @param context   the context, or <code>null</code>
     *
     * @return  the proxy to use, or <code>null</code> for a direct route
     *
     * @throws HttpException
     *         in case of system proxy settings that cannot be handled
     */
protected HttpHost determineProxy(HttpHost target, 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) {
        // convert the socket address to an HttpHost
        if (!(p.address() instanceof InetSocketAddress)) {
            throw new HttpException("Unable to handle non-Inet proxy address: " + p.address());
        }
        final InetSocketAddress isa = (InetSocketAddress) p.address();
        // assume default scheme (http)
        result = new HttpHost(getHost(isa), isa.getPort());
    }
    return result;
}