org.apache.commons.httpclient.NoHttpResponseException Java Examples

private HttpMethodRetryHandler createRetryTwiceHandler() {
    return new HttpMethodRetryHandler() {
        @Override
        public boolean retryMethod(final HttpMethod method, final IOException exception, int executionCount) {
            if (executionCount >= 2) {
                // Do not retry if over max retry count
                return false;
            }
            if (exception instanceof NoHttpResponseException) {
                // Retry if the server dropped connection on us
                return true;
            }
            if (!method.isRequestSent()) {
                // Retry if the request has not been sent fully or
                // if it's OK to retry methods that have been sent
                return true;
            }
            // otherwise do not retry
            return false;
        }
    };
}
 

protected HttpMethodRetryHandler createRetryTwiceHandler() {
    return new HttpMethodRetryHandler() {
        @Override
        public boolean retryMethod(final HttpMethod method, final IOException exception, int executionCount) {
            if (executionCount >= 2) {
                // Do not retry if over max retry count
                return false;
            }
            if (exception instanceof NoHttpResponseException) {
                // Retry if the server dropped connection on us
                return true;
            }
            if (!method.isRequestSent()) {
                // Retry if the request has not been sent fully or
                // if it's OK to retry methods that have been sent
                return true;
            }
            // otherwise do not retry
            return false;
        }
    };
}
 

/**
 * @return A HttpMethodRetryHandler with given number of retries.
 */
public static HttpMethodRetryHandler getHttpMethodRetryHandler(final int retryCount) {

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Initializing new HttpMethodRetryHandler with retry count " + retryCount);
    }

    return new HttpMethodRetryHandler() {
        @Override
        public boolean retryMethod(final HttpMethod method, final IOException exception, final int executionCount) {
            if (executionCount >= retryCount) {
                // Do not retry if over max retry count
                return false;
            }
            if (exception instanceof NoHttpResponseException) {
                // Retry if the server dropped connection on us
                return true;
            }
            if (!method.isRequestSent()) {
                // Retry if the request has not been sent fully or
                // if it's OK to retry methods that have been sent
                return true;
            }
            // otherwise do not retry
            return false;
        }
    };
}
 

/**
 * @return A HttpMethodRetryHandler with given number of retries.
 */
public static HttpMethodRetryHandler getHttpMethodRetryHandler(final int retryCount) {

    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("Initializing new HttpMethodRetryHandler with retry count " + retryCount);
    }

    return new HttpMethodRetryHandler() {
        @Override
        public boolean retryMethod(final HttpMethod method, final IOException exception, int executionCount) {
            if (executionCount >= retryCount) {
                // Do not retry if over max retry count
                return false;
            }
            if (exception instanceof NoHttpResponseException) {
                // Retry if the server dropped connection on us
                return true;
            }
            if (!method.isRequestSent()) {
                // Retry if the request has not been sent fully or
                // if it's OK to retry methods that have been sent
                return true;
            }
            // otherwise do not retry
            return false;
        }
    };
}
 

public HttpTemplateDownloader(final StorageLayer storageLayer, final String downloadUrl, final String toDir, final DownloadCompleteCallback callback,
                              final long maxTemplateSizeInBytes, final String user, final String password, final Proxy proxy, final ResourceType resourceType) {
    this._storage = storageLayer;
    this.downloadUrl = downloadUrl;
    setToDir(toDir);
    this.status = TemplateDownloadStatus.NOT_STARTED;
    this.resourceType = resourceType;
    this.maxTemplateSizeInBytes = maxTemplateSizeInBytes;

    this.totalBytes = 0;
    this.client = new HttpClient(s_httpClientManager);

    this.myretryhandler = (method, exception, executionCount) -> {
        if (executionCount >= 2) {
            // Do not retry if over max retry count
            return false;
        }
        if (exception instanceof NoHttpResponseException) {
            // Retry if the server dropped connection on us
            return true;
        }
        if (!method.isRequestSent()) {
            // Retry if the request has not been sent fully or
            // if it's OK to retry methods that have been sent
            return true;
        }
        // otherwise do not retry
        return false;
    };

    try {
        this.request = new GetMethod(downloadUrl);
        this.request.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, this.myretryhandler);
        this.completionCallback = callback;
        this.request.setFollowRedirects(true);

        final File f = File.createTempFile("dnld", "tmp_", new File(toDir));

        if (this._storage != null) {
            this._storage.setWorldReadableAndWriteable(f);
        }

        this.toFile = f.getAbsolutePath();
        final Pair<String, Integer> hostAndPort = UriUtils.validateUrl(downloadUrl);

        if (proxy != null) {
            this.client.getHostConfiguration().setProxy(proxy.getHost(), proxy.getPort());
            if (proxy.getUserName() != null) {
                final Credentials proxyCreds = new UsernamePasswordCredentials(proxy.getUserName(), proxy.getPassword());
                this.client.getState().setProxyCredentials(AuthScope.ANY, proxyCreds);
            }
        }
        if (user != null && password != null) {
            this.client.getParams().setAuthenticationPreemptive(true);
            final Credentials defaultcreds = new UsernamePasswordCredentials(user, password);
            this.client.getState().setCredentials(new AuthScope(hostAndPort.first(), hostAndPort.second(), AuthScope.ANY_REALM), defaultcreds);
            s_logger.info("Added username=" + user + ", password=" + password + "for host " + hostAndPort.first() + ":" + hostAndPort.second());
        } else {
            s_logger.info("No credentials configured for host=" + hostAndPort.first() + ":" + hostAndPort.second());
        }
    } catch (final IllegalArgumentException iae) {
        this.errorString = iae.getMessage();
        this.status = TemplateDownloadStatus.UNRECOVERABLE_ERROR;
        this.inited = false;
    } catch (final Exception ex) {
        this.errorString = "Unable to start download -- check url? ";
        this.status = TemplateDownloadStatus.UNRECOVERABLE_ERROR;
        s_logger.warn("Exception in constructor -- " + ex.toString());
    }
}