protected void copyRequestHeaders()

in hawtio-system/src/main/java/io/hawt/web/proxy/ProxyServlet.java [444:473]
24 lines of code
9 McCabe index (conditional complexity)

    protected void copyRequestHeaders(HttpServletRequest servletRequest, HttpRequest proxyRequest, URI targetUriObj) {
        // Get an Enumeration of all of the header names sent by the client
        Enumeration enumerationOfHeaderNames = servletRequest.getHeaderNames();
        while (enumerationOfHeaderNames.hasMoreElements()) {
            String headerName = (String) enumerationOfHeaderNames.nextElement();
            //Instead the content-length is effectively set via InputStreamEntity
            if (headerName.equalsIgnoreCase(HttpHeaders.CONTENT_LENGTH))
                continue;
            if (hopByHopHeaders.containsHeader(headerName))
                continue;

            Enumeration headers = servletRequest.getHeaders(headerName);
            while (headers.hasMoreElements()) {//sometimes more than one value
                String headerValue = (String) headers.nextElement();
                // In case the proxy host is running multiple virtual servers,
                // rewrite the Host header to ensure that we get content from
                // the correct virtual server
                if (headerName.equalsIgnoreCase(HttpHeaders.HOST)) {
                    HttpHost host = URIUtils.extractHost(targetUriObj);
                    if (host != null) {
                        headerValue = host.getHostName();
                        if (headerValue != null && host.getPort() != -1) {
                            headerValue += ":" + host.getPort();
                        }
                    }
                }
                proxyRequest.addHeader(headerName, headerValue);
            }
        }
    }