BlacklistFilter.java 文件源码

@Override
public HttpResponse clientToProxyRequest(HttpObject httpObject) {
    if (httpObject instanceof HttpRequest) {
        HttpRequest httpRequest = (HttpRequest) httpObject;

        String url = getFullUrl(httpRequest);

        for (BlacklistEntry entry : blacklistedUrls) {
            if (HttpMethod.CONNECT.equals(httpRequest.getMethod()) && entry.getHttpMethodPattern() == null) {
                // do not allow CONNECTs to be blacklisted unless a method pattern is explicitly specified
                continue;
            }

            if (entry.matches(url, httpRequest.getMethod().name())) {
                HttpResponseStatus status = HttpResponseStatus.valueOf(entry.getStatusCode());
                HttpResponse resp = new DefaultFullHttpResponse(httpRequest.getProtocolVersion(), status);
                HttpHeaders.setContentLength(resp, 0L);

                return resp;
            }
        }
    }

    return null;
}