问题描述
我正在尝试获取当前使用的网络适配器.例如，如果我在 ASP.NET Core 中收到一个 Web 请求，我想知道正在使用哪个适配器来处理该请求.
I'm trying to fetch the currently used network adapter.For example, if I'm receiving a web request in ASP.NET Core, I want to know which adapter is being used to handle that request.
谢谢！
推荐答案
您可以使用 HttpContext.Connection.LocalIpAddress 属性获取本地(服务器)端连接的IP地址，然后找到NetworkInterface 绑定了相同地址的实例.
You can use the HttpContext.Connection.LocalIpAddress property to get the IP address of the local (server) end of the connection, then find the NetworkInterface instance that has the same address bound to it.
using System.Linq;
using System.Net.NetworkInformation;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
namespace WebApplication1.Controllers
{
public class HomeController : Controller
{
public IActionResult GetInterfaceInfo()
{
var connectionLocalAddress = HttpContext.Connection.LocalIpAddress;
var connectionLocalInterface = NetworkInterface.GetAllNetworkInterfaces()
.Where(iface => iface.GetIPProperties().UnicastAddresses.Any(unicastInfo => unicastInfo.Address.Equals(connectionLocalAddress)))
.SingleOrDefault();
var results = new {
NetworkInterface = connectionLocalInterface,
IPInterfaceProperties = connectionLocalInterface?.GetIPProperties(),
IPInterfaceStatistics = connectionLocalInterface?.GetIPStatistics(),
IPv4InterfaceStatistics = connectionLocalInterface?.GetIPv4Statistics()
};
return Json(
results,
new JsonSerializerSettings() {
ContractResolver = new IgnorePropertyExceptionsResolver(),
Formatting = Formatting.Indented
}
);
}
}
}
访问 http://localhost:12345/Home/GetInterfaceInfo 然后产生...
Accessing http://localhost:12345/Home/GetInterfaceInfo then produces...
{
"NetworkInterface": {
"Id": "{01234567-ABCD-EF01-2345-6789ABCDEF01}",
"Name": "Loopback Pseudo-Interface 1",
"Description": "Software Loopback Interface 1",
"NetworkInterfaceType": 24,
"OperationalStatus": 1,
"Speed": 1073741824,
"IsReceiveOnly": false,
"SupportsMulticast": true
},
"IPInterfaceProperties": {
"IsDnsEnabled": false,
"IsDynamicDnsEnabled": true,
"DnsSuffix": "",
"AnycastAddresses": [],
"UnicastAddresses": [
{
"Address": {
"AddressFamily": 23,
"ScopeId": 0,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false
},
"IPv4Mask": {
"AddressFamily": 2,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false,
"Address": 0
},
"PrefixLength": 128,
"IsTransient": false,
"IsDnsEligible": false,
"PrefixOrigin": 2,
"SuffixOrigin": 2,
"DuplicateAddressDetectionState": 4,
"AddressValidLifetime": 4294967295,
"AddressPreferredLifetime": 4294967295,
"DhcpLeaseLifetime": 1542939
},
{
"Address": {
"AddressFamily": 2,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false,
"Address": 16777343
},
"IPv4Mask": {
"AddressFamily": 2,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false,
"Address": 255
},
"PrefixLength": 8,
"IsTransient": false,
"IsDnsEligible": false,
"PrefixOrigin": 2,
"SuffixOrigin": 2,
"DuplicateAddressDetectionState": 4,
"AddressValidLifetime": 4294967295,
"AddressPreferredLifetime": 4294967295,
"DhcpLeaseLifetime": 1542939
}
],
"MulticastAddresses": [
{
"Address": {
"AddressFamily": 23,
"ScopeId": 1,
"IsIPv6Multicast": true,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false
},
"IsTransient": false,
"IsDnsEligible": false,
"PrefixOrigin": 0,
"SuffixOrigin": 0,
"DuplicateAddressDetectionState": 0,
"AddressValidLifetime": 0,
"AddressPreferredLifetime": 0,
"DhcpLeaseLifetime": 0
},
{
"Address": {
"AddressFamily": 2,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": false,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false,
"Address": 4211081199
},
"IsTransient": false,
"IsDnsEligible": false,
"PrefixOrigin": 0,
"SuffixOrigin": 0,
"DuplicateAddressDetectionState": 0,
"AddressValidLifetime": 0,
"AddressPreferredLifetime": 0,
"DhcpLeaseLifetime": 0
}
],
"DnsAddresses": [
{
"AddressFamily": 23,
"ScopeId": 1,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": true,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false
},
{
"AddressFamily": 23,
"ScopeId": 1,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": true,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false
},
{
"AddressFamily": 23,
"ScopeId": 1,
"IsIPv6Multicast": false,
"IsIPv6LinkLocal": false,
"IsIPv6SiteLocal": true,
"IsIPv6Teredo": false,
"IsIPv4MappedToIPv6": false
}
],
"GatewayAddresses": [],
"DhcpServerAddresses": [],
"WinsServersAddresses": []
},
"IPInterfaceStatistics": {
"OutputQueueLength": 0,
"BytesSent": 0,
"BytesReceived": 0,
"UnicastPacketsSent": 0,
"UnicastPacketsReceived": 0,
"NonUnicastPacketsSent": 0,
"NonUnicastPacketsReceived": 0,
"IncomingPacketsDiscarded": 0,
"OutgoingPacketsDiscarded": 0,
"IncomingPacketsWithErrors": 0,
"OutgoingPacketsWithErrors": 0,
"IncomingUnknownProtocolPackets": 0
},
"IPv4InterfaceStatistics": {
"OutputQueueLength": 0,
"BytesSent": 0,
"BytesReceived": 0,
"UnicastPacketsSent": 0,
"UnicastPacketsReceived": 0,
"NonUnicastPacketsSent": 0,
"NonUnicastPacketsReceived": 0,
"IncomingPacketsDiscarded": 0,
"OutgoingPacketsDiscarded": 0,
"IncomingPacketsWithErrors": 0,
"OutgoingPacketsWithErrors": 0,
"IncomingUnknownProtocolPackets": 0
}
}
IgnorePropertyExceptionsResolver 类来自 忽略在序列化为 JSON 时抛出异常的类成员 和看起来像这样...
The IgnorePropertyExceptionsResolver class comes from Ignoring class members that throw exceptions when serializing to JSON and looks like this...
using System.Reflection;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
namespace WebApplication1.Controllers
{
internal class IgnorePropertyExceptionsResolver : DefaultContractResolver
{
protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
{
var jsonProperty = base.CreateProperty(member, memberSerialization);
jsonProperty.ShouldSerialize = instance => {
try
{
var instanceProperty = (PropertyInfo) member;
if (instanceProperty.CanRead)
{
instanceProperty.GetValue(instance, null);
return true;
}
}
catch
{
}
return false;
};
return jsonProperty;
}
}
}
我使用这个类的原因是因为 results.IPInterfaceProperties 的集合属性中的一些 IPAddress 对象会在它们的 Address 抛出异常code> 属性被访问，因此解析器只是省略了有问题的属性以使输出工作.当然，您将直接访问这些对象，而不是先将它们转换为 JSON，因此只有此演示代码才真正需要该类.
The reason I use this class is because some of the IPAddress objects within the collection properties of results.IPInterfaceProperties would throw an exception when their Address property was accessed, so that resolver just omits the offending properties to make the output work. Of course, you would be accessing these objects directly and not converting them to JSON first, so that class is only really needed for this demo code.
这篇关于获取当前正在使用的网络适配器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！