Examples with InputStreamResponseListener org.eclipse.jetty.client.util.InputStreamResponseListener used on opensource projects

Example 26 with InputStreamResponseListener

use of org.eclipse.jetty.client.util.InputStreamResponseListener in project smarthome by eclipse.

the class BlockingProxyServlet method doGet.

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    URI uri = service.uriFromRequest(request);
    if (uri == null) {
        service.sendError(request, response);
    } else {
        Request httpRequest = httpClient.newRequest(uri);
        service.maybeAppendAuthHeader(uri, httpRequest);
        InputStreamResponseListener listener = new InputStreamResponseListener();
        // do the client request
        try {
            httpRequest.send(listener);
            // wait for the response headers to arrive or the timeout to expire
            Response httpResponse = listener.get(TIMEOUT, TimeUnit.MILLISECONDS);
            // get response headers
            HttpFields headers = httpResponse.getHeaders();
            Iterator<HttpField> iterator = headers.iterator();
            // copy all headers
            while (iterator.hasNext()) {
                HttpField header = iterator.next();
                response.setHeader(header.getName(), header.getValue());
            }
        } catch (Exception e) {
            if (e instanceof TimeoutException) {
                logger.warn("Proxy servlet failed to stream content due to a timeout");
                response.sendError(HttpServletResponse.SC_GATEWAY_TIMEOUT);
            } else {
                logger.warn("Proxy servlet failed to stream content: {}", e.getMessage());
                response.sendError(HttpServletResponse.SC_BAD_REQUEST, e.getMessage());
            }
            return;
        }
        // now copy/stream the body content
        try (InputStream responseContent = listener.getInputStream()) {
            IOUtils.copy(responseContent, response.getOutputStream());
        }
    }
}