ipv4

unity 获取本地ip地址

雨燕双飞 提交于 2019-12-01 10:05:51
1 using System.Collections; 2 using System.Collections.Generic; 3 using System.Net.NetworkInformation; 4 using System.Net.Sockets; 5 using UnityEngine; 6 7 public class Ip 8 { 9 public enum ADDRESSFAM 10 { 11 IPv4, IPv6 12 } 13 /// <summary> 14 /// 获取本机IP 15 /// </summary> 16 /// <param name="Addfam">要获取的IP类型</param> 17 /// <returns></returns> 18 public static string GetIP(ADDRESSFAM Addfam) 19 { 20 if (Addfam == ADDRESSFAM.IPv6 && !Socket.OSSupportsIPv6) 21 { 22 return null; 23 } 24 string output = ""; 25 foreach (NetworkInterface item in NetworkInterface.GetAllNetworkInterfaces()) 26 { 27

IPv6、双栈与隧道

送分小仙女□ 提交于 2019-12-01 08:23:24
双栈策略   实现IPv6结点与IPv4结点互通的最直接的方式是在IPv6结点中加入IPv4协议栈。具有双协议栈的结点称作“IPv6/v4结点”,这些结点既可以收发IPv4分组,也可以收发IPv6分组。它们可以使用IPv4与IPv4结点互通,也可以直接使用IPv6与IPv6结点互通。双栈技术不需要构造隧道,Pv6/v4结点可以只支持手工配置隧道,也可以既支持手工配置也支持自动隧道 在IPV6发展初期,必然有许多局部的纯IPV6网络,这些IPV6网络被IPV4骨干网络隔离开来,为了使这些孤立的“IPV6岛”互通,就采取隧道技术的方式来解决。利用穿越现存IPV4因特网的隧道技术将许多个“IPV6孤岛”连接起来,逐步扩大IPV6的实现范围,这就是目前国际IPV6试验床6Bone的计划。    工作机理:在IPV6网络与IPV4网络间的隧道入口处,路由器将IPV6的数据分组封装入IPV4中,IPV4分组的源地址和目的地址分别是隧道入口和出口的IPV4地址。在隧道的出口处再将IPV6分组取出转发给目的节点。 来源: https://www.cnblogs.com/flzs/p/11672859.html

How to force ipv6 or ipv4 for HttpWebRequest or WebRequest C#

只愿长相守 提交于 2019-12-01 07:34:28
问题 Coming from node.js I can do this to tell node.js to make the request using ipv6 vs ipv4 var http = require("http"); var options = { hostname: "google.com", family: 4, // set to 6 for ipv6 }; var req = http.request(options, function(res) { .. handle result here .. }); req.write(""); req.end(); Setting family to 4 forces ipv4, setting it to 6 forces ipv6. Not setting it lets either work. How can I do the same thing in C# (.NET 3.5) I can think of one way which is to make a DNS request myself

How can you run iOS Apps on the Google Cloud even though it lacks support for IPv6

天涯浪子 提交于 2019-12-01 07:10:50
A new app store policy by Apple has taken effect on June 1 so that all apps submitted to the App Store must support IPv6-only networking ( https://developer.apple.com/news/?id=05042016a ). How is it possible to host an app on Google Cloud Platform that only supports IPv4 ( https://cloud.google.com/compute/docs/networking ) and still passes Apple's review process? The server side of the app doesn't need to be reachable over IPv6 yet. Most IPv6-only networks have a DNS64/NAT64 service to reach IPv4-only servers from IPv6-only clients. Take a look at RFC 6052 , RFC 6146 and RFC 6147 if you want

Convert IP between IPv4 and numerical format in java

…衆ロ難τιáo~ 提交于 2019-12-01 06:20:50
An IPv4 can have more representations: as string (a.b.c.d) or numerical (as an unsigned int of 32 bits). (Maybe other, but I will ignore them.) Is there any built in support in Java (8), simple and easy to use, without network access, to convert between these formats? I need something like this: long ip = toNumerical("1.2.3.4"); // returns 0x0000000001020304L String ipv4 = toIPv4(0x0000000001020304L); // returns "1.2.3.4" If there is no built in such functions in Java, feel free to suggest other solutions. Thank you The can be done using InetAddress as follows. //Converts a String that

Convert IP between IPv4 and numerical format in java

杀马特。学长 韩版系。学妹 提交于 2019-12-01 05:34:31
问题 An IPv4 can have more representations: as string (a.b.c.d) or numerical (as an unsigned int of 32 bits). (Maybe other, but I will ignore them.) Is there any built in support in Java (8), simple and easy to use, without network access, to convert between these formats? I need something like this: long ip = toNumerical("1.2.3.4"); // returns 0x0000000001020304L String ipv4 = toIPv4(0x0000000001020304L); // returns "1.2.3.4" If there is no built in such functions in Java, feel free to suggest

RHEL8和CentOS8怎么重启网络

南笙酒味 提交于 2019-12-01 05:31:06
RHEL8和CentOS8怎么重启网络 本文主要讲解如何重启RHEL 8或者CentOS 8网络以及如何解决RHEL8和CentOS8系统的网络管理服务报错,当我们安装好RHEL 8或者 CentOS 8,重启启动网络时,会出现以下报错: ]# systemctl restart network.service 报错信息如下 Failed to restart network.service: Unit network.service not found. 意思为无法重启网络服务,原因是无法找到network.service网络服务。 出现错误的原因是在RHEL 8和CentOS 8系统里,已废弃network.service。因此只能通过其它方法进行网络配置,包括NM命令工具集。换言之,在rhel8上,必须开启NM,否则无法使用网络。 下文假设你的网卡标识为xxx,可以通过以下命令确定网卡标识符 ] # ip addr 比如ens33等等这类标识。 1. RHEL8或者CentOS8配置网络的三种方法 RHEL8或者CentOS8应该使用nmcli管理网络 手工配置ifcfg,通过NM来生效 通过NM自带工具配ip,比如nmcli 手工配置ifcfg,通过传统network.service来生效 建议: 推荐使用上述第1种网络配置方法(手工配置ifcfg,通过NM生效)

各类IP地址

倖福魔咒の 提交于 2019-12-01 04:56:27
IPv4地址分类 折叠 A类IPv4地址 B类IPv4地址 C类IPv4地址 D类IPv4地址 E类IPv4地址 网络标志位 0 10 110 1110 11110 IP地址范围 1.0.0.0~127.255.255.255 128.0.0.0~191.255.255.255 192.0.0.0~223.255.255.255 224.0.0.0~239.255.255.255 240.0.0.0~247.255.255.255 可用IP地址范围 1.0.0.1~126.255.255.254 128.0.0.1~191.255.255.254 192.0.0.1~223.255.255.254 是否可以分配给主机使用 是 是 是 否 否 网络数量(个) 126 (2 7 -2) 16384 (2 14 ) 2097152 (2 21 ) --- --- 每个网络中可容纳主机数(个) 16777214 (2 24 -2) 65534 (2 16 -2) 254 (2 8 -2) --- --- 适用范围 大量主机的大型网络 中等规模主机数的网络 小型局域网 留给Internet体系结构委员会(IAB)使用【组播地址】 保留,仅作为搜索、Internet的实验和开发用 说明:D类与E类IPv4地址不区分网络地址与主机地址 来源:维基百科 https://zh.wikipedia

提高openfire最大连接数

做~自己de王妃 提交于 2019-12-01 04:09:49
提高openfire最大连接数 影响连接数的元素包含三种: 1) Linux的系统参数 2) 进程自身可以创建的线程数 3) Openfire自身系统参数 Linux系统参数 1. Ulimit –n 265535   在Linux平台上,无论编写客户端程序还是服务端程序,在进行高并发TCP连接处理时,最高的并发数量都要受到系统对用户单一进程同时可打开文件数量的限制(这是因为系统为每个TCP连接都要创建一个socket句柄,每个socket句柄同时也是一个文件句柄),这个数字可以设的更大。 此命令是临时更改,也可以通过修改文件/etc/security/limits.conf 2. net.ipv4.ip_conntrack_max=265535 系统允许的最大跟踪连接条目。在/etc/sysctl.conf文件中增加此属性,并运行>/sbin/sysctl.conf –p 另外在sysctl -p的时候A报error: 'net.ipv4.ip_conntrack_max' is an unknown key ,通过以下命令修正: modprobe ip_conntrack echo "modprobe ip_conntrack" >> /etc/rc.local 3. fs.file-max = 265535 系统级别的能够打开的文件句柄的数量,ulimit 是进程级别的 4.

Swift 3 how to resolve NetService IP?

可紊 提交于 2019-12-01 03:50:21
问题 Just trying Bonjour in swift 3 Here is my code , I can receive the delegate func netServiceDidResolveAddress(_ sender: NetService) { print("netServiceDidResolveAddress service name \(sender.name) of type \(sender.type)," + "port \(sender.port), addresses \(sender.addresses)") } And here is my result netServiceDidResolveAddress service name Webber's Mac mini of type _myapp._tcp.,port 5678, addresses Optional([<1002162e c0a80205 00000000 00000000>, <1c1e162e 00000000 fe800000 00000000 00bce7ad