protected HttpResponse doExecute(HttpServletRequest servletRequest, HttpServletResponse servletResponse,
                                   HttpRequest proxyRequest) throws IOException {
    if (doLog) {
      log("proxy " + servletRequest.getMethod() + " uri: " + servletRequest.getRequestURI() + " -- " +
              proxyRequest.getRequestLine().getUri());
    }
    return proxyClient.execute(getTargetHost(servletRequest), proxyRequest);
  }
The http client used.
@see #createHttpClient()
src/main/java/org/mitre/dsmiley/httpproxy/ProxyServlet.java