我有一个简单的Node.js程序在我的机器上运行,我想获得我的程序正在运行的PC的本地IP地址。我如何在Node.js中获得它?
当前回答
这是我的变体,允许以可移植的方式获得IPv4和IPv6地址:
/**
* Collects information about the local IPv4/IPv6 addresses of
* every network interface on the local computer.
* Returns an object with the network interface name as the first-level key and
* "IPv4" or "IPv6" as the second-level key.
* For example you can use getLocalIPs().eth0.IPv6 to get the IPv6 address
* (as string) of eth0
*/
getLocalIPs = function () {
var addrInfo, ifaceDetails, _len;
var localIPInfo = {};
//Get the network interfaces
var networkInterfaces = require('os').networkInterfaces();
//Iterate over the network interfaces
for (var ifaceName in networkInterfaces) {
ifaceDetails = networkInterfaces[ifaceName];
//Iterate over all interface details
for (var _i = 0, _len = ifaceDetails.length; _i < _len; _i++) {
addrInfo = ifaceDetails[_i];
if (addrInfo.family === 'IPv4') {
//Extract the IPv4 address
if (!localIPInfo[ifaceName]) {
localIPInfo[ifaceName] = {};
}
localIPInfo[ifaceName].IPv4 = addrInfo.address;
} else if (addrInfo.family === 'IPv6') {
//Extract the IPv6 address
if (!localIPInfo[ifaceName]) {
localIPInfo[ifaceName] = {};
}
localIPInfo[ifaceName].IPv6 = addrInfo.address;
}
}
}
return localIPInfo;
};
下面是同一个函数的CoffeeScript版本:
getLocalIPs = () =>
###
Collects information about the local IPv4/IPv6 addresses of
every network interface on the local computer.
Returns an object with the network interface name as the first-level key and
"IPv4" or "IPv6" as the second-level key.
For example you can use getLocalIPs().eth0.IPv6 to get the IPv6 address
(as string) of eth0
###
networkInterfaces = require('os').networkInterfaces();
localIPInfo = {}
for ifaceName, ifaceDetails of networkInterfaces
for addrInfo in ifaceDetails
if addrInfo.family=='IPv4'
if !localIPInfo[ifaceName]
localIPInfo[ifaceName] = {}
localIPInfo[ifaceName].IPv4 = addrInfo.address
else if addrInfo.family=='IPv6'
if !localIPInfo[ifaceName]
localIPInfo[ifaceName] = {}
localIPInfo[ifaceName].IPv6 = addrInfo.address
return localIPInfo
console.log(getLocalIPs())的示例输出
{ lo: { IPv4: '127.0.0.1', IPv6: '::1' },
wlan0: { IPv4: '192.168.178.21', IPv6: 'fe80::aa1a:2eee:feba:1c39' },
tap0: { IPv4: '10.1.1.7', IPv6: 'fe80::ddf1:a9a1:1242:bc9b' } }
其他回答
谷歌在搜索“Node.js获取服务器IP”时引导我到这个问题,所以让我们为那些试图在他们的Node.js服务器程序中实现这一点的人提供一个替代答案(可能是原始海报的情况)。
在最简单的情况下,服务器只绑定到一个IP地址,应该不需要确定IP地址,因为我们已经知道将它绑定到哪个地址(例如,传递给listen()函数的第二个参数)。
在不太简单的情况下,服务器绑定到多个IP地址,我们可能需要确定客户端连接到的接口的IP地址。正如Tor Valamo所简单建议的,现在,我们可以很容易地从连接的套接字及其localAddress属性中获得这些信息。
例如,如果程序是web服务器:
var http = require("http")
http.createServer(function (req, res) {
console.log(req.socket.localAddress)
res.end(req.socket.localAddress)
}).listen(8000)
如果它是一个通用TCP服务器:
var net = require("net")
net.createServer(function (socket) {
console.log(socket.localAddress)
socket.end(socket.localAddress)
}).listen(8000)
在运行服务器程序时,该解决方案提供了非常高的可移植性、准确性和效率。
详情请参见:
http://nodejs.org/api/net.html http://nodejs.org/api/http.html
我写了一个Node.js模块,通过查看包含默认网关的网络接口来确定您的本地IP地址。
这比从os.networkInterfaces()或DNS查找主机名更可靠。它可以忽略VMware虚拟接口、环回接口和VPN接口,它可以在Windows、Linux、Mac OS和FreeBSD上工作。在底层,它执行route.exe或netstat并解析输出。
var localIpV4Address = require("local-ipv4-address");
localIpV4Address().then(function(ipAddress){
console.log("My IP address is " + ipAddress);
// My IP address is 10.4.4.137
});
很多时候,我发现有多个内部和外部面向接口可用(例如:10.0.75.1,172.100.0.1,192.168.2.3),而我真正想要的是外部接口(172.100.0.1)。
如果其他人也有类似的担忧,这里还有一个关于这个问题的看法,希望能有所帮助……
const address = Object.keys(os.networkInterfaces())
// flatten interfaces to an array
.reduce((a, key) => [
...a,
...os.networkInterfaces()[key]
], [])
// non-internal ipv4 addresses only
.filter(iface => iface.family === 'IPv4' && !iface.internal)
// project ipv4 address as a 32-bit number (n)
.map(iface => ({...iface, n: (d => ((((((+d[0])*256)+(+d[1]))*256)+(+d[2]))*256)+(+d[3]))(iface.address.split('.'))}))
// set a hi-bit on (n) for reserved addresses so they will sort to the bottom
.map(iface => iface.address.startsWith('10.') || iface.address.startsWith('192.') ? {...iface, n: Math.pow(2,32) + iface.n} : iface)
// sort ascending on (n)
.sort((a, b) => a.n - b.n)
[0]||{}.address;
这里有一个简洁的小命令行,它实现了这个功能:
const ni = require('os').networkInterfaces();
Object
.keys(ni)
.map(interf =>
ni[interf].map(o => !o.internal && o.family === 'IPv4' && o.address))
.reduce((a, b) => a.concat(b))
.filter(o => o)
[0];
使用npm ip模块:
var ip = require('ip');
console.log(ip.address());
> '192.168.0.117'