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linux下IPTABLES配置详解

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linux下IPTABLES配置详解 -A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 24000 -j ACCEPT -A RH-Firewall-1-INPUT -s 121.10.120.24 -p tcp -m tcp --dport 18612 -j ACCEPT 如果你的IPTABLES基础知识还不了解,建议先去看看. 开始配置我们来配置一个filter表的防火墙. (1)查看本机关于IPTABLES的设置情况 [root@tp ~]# iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Chain RH-Firewall-1-INPUT (0 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT icmp --

javaweb学习总结(十九)——JSP标签

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一、JSP标签介绍　　JSP标签也称之为Jsp Action(JSP动作)元素，它用于在Jsp页面中提供业务逻辑功能，避免在JSP页面中直接编写java代码，造成jsp页面难以维护。二、JSP常用标签　　jsp的常用标签有以下三个 <jsp:include>标签 <jsp:forward>标签 <jsp:param>标签 2.1、<jsp:include>标签　　<jsp:include>标签用于把另外一个资源的输出内容插入进当前JSP页面的输出内容之中，这种在JSP页面执行时的引入方式称之为动态引入。语法： <jsp:include page="relativeURL | <%=expression%>" flush="true|false" /> 　　page属性用于指定被引入资源的相对路径，它也可以通过执行一个表达式来获得。　　flush属性指定在插入其他资源的输出内容时，是否先将当前JSP页面的已输出的内容刷新到客户端。范例：使用jsp:include标签引入资源 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 3 <html> 4

Forwarding an error in Swift

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问题 Is there a better solution to forward a Swift error from one function to another? In the moment, I'm doing it like this: enum Error:ErrorType{ case Error1 case Error2 } func func1()throws{ do{ try func2() }catch Error.Error1{ throw Error.Error1 }catch Error.Error2{ throw Error.Error2 } } func func2()throws{ // proof something throw Error.Error1 } So, to forward an error, I need to catch all the errors and throw them again. Is there a better solution? 回答1: Yes: don't wrap it in a do ... catch

forward declaration of a struct in C?

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问题 #include <stdio.h> struct context; struct funcptrs{ void (*func0)(context *ctx); void (*func1)(void); }; struct context{ funcptrs fps; }; void func1 (void) { printf( "1\n" ); } void func0 (context *ctx) { printf( "0\n" ); } void getContext(context *con){ con=?; // please fill this with a dummy example so that I can get this working. Thanks. } int main(int argc, char *argv[]){ funcptrs funcs = { func0, func1 }; context *c; getContext(c); c->fps.func0(c); getchar(); return 0; } I am missing

Difference between include and forward mechanism for request dispatching concept?

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问题 Forward() : This can be done in two ways by Request & ServeletContext. Forwarding a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. Forward is done at server side, without the client's knowledge. When you invoke a forward request, the request is sent to another resource on the server, without the client being informed that a different resource is going to process the request. This process occurs completely with in the web container. Simply include:

Difference between JSP forward and redirect [duplicate]

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问题 This question already has answers here : RequestDispatcher.forward() vs HttpServletResponse.sendRedirect() (10 answers) Closed last year . Please explain the difference between jsp:forward and redirect . What is happening in each case? 回答1: redirect sets the response status to 302 [1], and the new url in a Location header, and sends the response to the browser. Then the browser, according to the http specification, makes another request to the new url forward happens entirely on the server.

怎么打开 istio 的应用grafana和kiali 的 dashboard

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1. kubectl get pods -n istio-system -w kubectl get service -n istio-system -w 2. 要把访问 Port 映射出去一次： kubectl port-forward --address 0.0.0.0 {pod-name} 20001 -n istio-system 把kiali 映射出去一次： kubectl port-forward --address 0.0.0.0 kiali-fb5f485fb-2jczp 20001 -n istio-system 把grafana 映射出去一次： kubectl port-forward --address 0.0.0.0 grafana-6c8f45499-9k6n6 3000 -n istio-system 来源： https://www.cnblogs.com/xiaoyongyang/p/11959715.html

C++ std::forward_list 基本用法

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#include <iostream> #include <string> #include <forward_list> using namespace std; // https://zh.cppreference.com/w/cpp/container/forward_list std::ostream& operator<<(std::ostream& ostr, const std::forward_list<int>& list) { for (auto &i : list) { ostr << " " << i; } return ostr; } class item { public: item() = delete; item(const int& a, const int& b) : m_a(a), m_b(b) {} bool operator< (const item& comp) const { return m_a*m_b < comp.m_a*comp.m_b; } bool operator== (const item& comp) const { return m_a==comp.m_a && m_b==comp.m_b; } private: int m_a; int m_b; }; bool compAB(int a, int b) {

IC基本知识

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　前面学习了进行低功耗的目的个功耗的构成，今天就来分享一下功耗的分析。由于是面向数字IC前端设计的学习，所以这里的功耗分析是基于DC中的power compiler工具；更精确的功耗分析可以采用PT，关于PT的功耗分析可以查阅其他资料，这里不涉及使用PT的进行功耗分析。　　(1)功耗分析与流程概述　　上一个小节中讲解了功耗的构成，并且结合工艺库进行简要地介绍了功耗的计算。但是实际上，我们根本不可能人工地计算实际的大规模集成电路的功耗，我们往往借助EDA工具帮我们分析电路的功耗。这里我们就介绍一下EDA工具分析功耗的(普遍)流程，然后下一小节我们将介绍低功耗电路的设计和优化。 ①功耗分析流程的输入输出功耗分析的流程(从输入输出关系看)如下所示: 　　　　　　　　　　上面的图中，需要四种东西: 　　· tech library :这个就是包含功耗信息的工艺库了，比较精确的库里面还应该包含状态路径(SDPD)信息，代工厂提供。　　· netlist :设计的门级网表电路，可以通过DC综合得到。　　· parasitic :设计中连线等寄生参数，比如寄生电容、寄生电阻，这个一般是后端RC寄生参数工具提供，简单的功耗分析可以不需要这个文件。　　· switch activity :包含设计中每个节点的开关行为情况，比如说节点的翻转率或者可以计算出节点翻转率的文件

$this->forward looses the user's requested route?

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问题 I want to redirect admins to /admin and members to /member when users are identified but get to the home page ( / ). The controller looks like this : public function indexAction() { if ($this->get('security.context')->isGranted('ROLE_ADMIN')) { return new RedirectResponse($this->generateUrl('app_admin_homepage')); } else if ($this->get('security.context')->isGranted('ROLE_USER')) { return new RedirectResponse($this->generateUrl('app_member_homepage')); } return $this->forward('AppHomeBundle