/**
   * Report and attempt to recover from {@code e}. Returns true if the HTTP engine was replaced and
   * the request should be retried. Otherwise the failure is permanent.
   */
  private boolean handleFailure(IOException e) throws IOException {
    RouteSelector routeSelector = httpEngine.routeSelector;
    if (routeSelector != null && httpEngine.connection != null) {
      routeSelector.connectFailed(httpEngine.connection, e);
    }

    OutputStream requestBody = httpEngine.getRequestBody();
    boolean canRetryRequestBody =
        requestBody == null
            || requestBody instanceof RetryableOutputStream
            || (faultRecoveringRequestBody != null && faultRecoveringRequestBody.isRecoverable());
    if (routeSelector == null && httpEngine.connection == null // No connection.
        || routeSelector != null && !routeSelector.hasNext() // No more routes to attempt.
        || !isRecoverable(e)
        || !canRetryRequestBody) {
      httpEngineFailure = e;
      return false;
    }

    httpEngine.release(true);
    RetryableOutputStream retryableOutputStream =
        requestBody instanceof RetryableOutputStream ? (RetryableOutputStream) requestBody : null;
    httpEngine = newHttpEngine(method, rawRequestHeaders, null, retryableOutputStream);
    httpEngine.routeSelector = routeSelector; // Keep the same routeSelector.
    if (faultRecoveringRequestBody != null && faultRecoveringRequestBody.isRecoverable()) {
      httpEngine.sendRequest();
      faultRecoveringRequestBody.replaceStream(httpEngine.getRequestBody());
    }
    return true;
  }
 private Connection createNextConnection()
 {
     Object obj = client.getConnectionPool();
     do
     {
         Connection connection1 = ((ConnectionPool) (obj)).get(address);
         if (connection1 == null)
         {
             break;
         }
         if (networkRequest.method().equals("GET") || Internal.instance.isReadable(connection1))
         {
             return connection1;
         }
         Util.closeQuietly(connection1.getSocket());
     } while (true);
     try
     {
         obj = new Connection(((ConnectionPool) (obj)), routeSelector.next());
     }
     catch (IOException ioexception)
     {
         throw new RouteException(ioexception);
     }
     return ((Connection) (obj));
 }
 private void connectFailed(RouteSelector routeselector, IOException ioexception)
 {
     if (Internal.instance.recycleCount(connection) > 0)
     {
         return;
     } else
     {
         routeselector.connectFailed(connection.getRoute(), ioexception);
         return;
     }
 }
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 /** Connect to the origin server either directly or via a proxy. */
 protected final void connect() throws IOException {
   if (connection != null) {
     return;
   }
   if (routeSelector == null) {
     String uriHost = uri.getHost();
     if (uriHost == null) {
       throw new UnknownHostException(uri.toString());
     }
     SSLSocketFactory sslSocketFactory = null;
     HostnameVerifier hostnameVerifier = null;
     if (uri.getScheme().equalsIgnoreCase("https")) {
       sslSocketFactory = client.getSslSocketFactory();
       hostnameVerifier = client.getHostnameVerifier();
     }
     Address address =
         new Address(
             uriHost,
             getEffectivePort(uri),
             sslSocketFactory,
             hostnameVerifier,
             client.getAuthenticator(),
             client.getProxy(),
             client.getTransports());
     routeSelector =
         new RouteSelector(
             address,
             uri,
             client.getProxySelector(),
             client.getConnectionPool(),
             Dns.DEFAULT,
             client.getRoutesDatabase());
   }
   connection = routeSelector.next(method);
   if (!connection.isConnected()) {
     connection.connect(client.getConnectTimeout(), client.getReadTimeout(), getTunnelConfig());
     client.getConnectionPool().maybeShare(connection);
     client.getRoutesDatabase().connected(connection.getRoute());
   } else if (!connection.isSpdy()) {
     connection.updateReadTimeout(client.getReadTimeout());
   }
   connected(connection);
   if (connection.getRoute().getProxy() != client.getProxy()) {
     // Update the request line if the proxy changed; it may need a host name.
     requestHeaders.getHeaders().setRequestLine(getRequestLine());
   }
 }
 private void connect()
 {
     if (connection != null)
     {
         throw new IllegalStateException();
     }
     if (routeSelector == null)
     {
         address = createAddress(client, networkRequest);
         try
         {
             routeSelector = RouteSelector.get(address, networkRequest, client);
         }
         catch (IOException ioexception)
         {
             throw new RequestException(ioexception);
         }
     }
     connection = createNextConnection();
     Internal.instance.connectAndSetOwner(client, connection, this, networkRequest);
     route = connection.getRoute();
 }