final HttpRoute route = new HttpRoute(target, null, proxy, true,
TunnelType.TUNNELLED, LayerType.LAYERED);
context.setAttribute(ClientContext.ROUTE, route);
final HttpRequestInterceptor interceptor = new RequestClientConnControl();
interceptor.process(request, context);
final Header header1 = request.getFirstHeader(HTTP.CONN_DIRECTIVE);
Assert.assertNotNull(header1);
Assert.assertEquals(HTTP.CONN_KEEP_ALIVE, header1.getValue());
final Header header2 = request.getFirstHeader("Proxy-Connection");