由于IPEndpoint包含ToString()方法，输出：
10.10.10.10:1010
应该有Parse()和/或TryParse()方法，但没有。
我可以在:上拆分字符串并解析IP地址和端口。
但是有更优雅的方式吗？
这是一个解决方案......
public static IPEndPoint CreateIPEndPoint(string endPoint)
{
string[] ep = endPoint.Split(':');
if(ep.Length != 2) throw new FormatException("Invalid endpoint format");
IPAddress ip;
if(!IPAddress.TryParse(ep[0], out ip))
{
throw new FormatException("Invalid ip-adress");
}
int port;
if(!int.TryParse(ep[1], NumberStyles.None, NumberFormatInfo.CurrentInfo, out port))
{
throw new FormatException("Invalid port");
}
return new IPEndPoint(ip, port);
}
编辑：添加了一个处理IPv4和IPv6的版本，前一个版本只处理IPv4。
// Handles IPv4 and IPv6 notation.
public static IPEndPoint CreateIPEndPoint(string endPoint)
{
string[] ep = endPoint.Split(':');
if (ep.Length < 2) throw new FormatException("Invalid endpoint format");
IPAddress ip;
if (ep.Length > 2)
{
if (!IPAddress.TryParse(string.Join(":", ep, 0, ep.Length - 1), out ip))
{
throw new FormatException("Invalid ip-adress");
}
}
else
{
if (!IPAddress.TryParse(ep[0], out ip))
{
throw new FormatException("Invalid ip-adress");
}
}
int port;
if (!int.TryParse(ep[ep.Length - 1], NumberStyles.None, NumberFormatInfo.CurrentInfo, out port))
{
throw new FormatException("Invalid port");
}
return new IPEndPoint(ip, port);
}
这是一个非常简单的解决方案，它处理IPv4和IPv6。
public class IPEndPoint : System.Net.IPEndPoint
{
public IPEndPoint(long address, int port) : base(address, port) { }
public IPEndPoint(IPAddress address, int port) : base(address, port) { }
public static bool TryParse(string value, out IPEndPoint result)
{
if (!Uri.TryCreate($"tcp://{value}", UriKind.Absolute, out Uri uri) ||
!IPAddress.TryParse(uri.Host, out IPAddress ipAddress) ||
uri.Port < 0 || uri.Port > 65535)
{
result = default(IPEndPoint);
return false;
}
result = new IPEndPoint(ipAddress, uri.Port);
return true;
}
}
只需按照通常的方式使用TryParse。
IPEndPoint.TryParse("192.168.1.10:80", out IPEndPoint ipv4Result);
IPEndPoint.TryParse("[fd00::]:8080", out IPEndPoint ipv6Result);
显然，IPEndPoint.Parse和IPEndPoint.TryParse有recently been added到.NET Core 3.0。
如果您要定位它，请尝试这些方法！实现见上面的链接。
using System;
using System.Net;
static class Helper {
public static IPEndPoint ToIPEndPoint(this string value, int port = IPEndPoint.MinPort) {
if (string.IsNullOrEmpty(value) || ! IPAddress.TryParse(value, out var address))
return null;
var offset = (value = value.Replace(address.ToString(), string.Empty)).LastIndexOf(':');
if (offset >= 0)
if (! int.TryParse(value.Substring(offset + 1), out port) || port < IPEndPoint.MinPort || port > IPEndPoint.MaxPort)
return null;
return new IPEndPoint(address, port);
}
}
class Program {
static void Main() {
foreach (var sample in new [] {
// See https://docops.ca.com/ca-data-protection-15/en/implementing/platform-deployment/technical-information/ipv6-address-and-port-formats
"192.168.0.3",
"fe80::214:c2ff:fec8:c920",
"10.0.1.53-10.0.1.80",
"10.0",
"10/7",
"2001:0db8:85a3/48",
"192.168.0.5:10",
"[fe80::e828:209d:20e:c0ae]:375",
":137-139",
"192.168:1024-65535",
"[fe80::]-[fe81::]:80"
}) {
var point = sample.ToIPEndPoint();
var report = point == null ? "NULL" : $@"IPEndPoint {{
Address: {point.Address}
AddressFamily: {point.AddressFamily}
Port: {point.Port}
}}";
Console.WriteLine($@"""{sample}"" to IPEndPoint is {report}
");
}
}
}
我有要求使用IPv6，v4和主机名解析IPEndpoint。我写的解决方案如下：
public static IPEndPoint Parse(string endpointstring)
{
return Parse(endpointstring, -1);
}
public static IPEndPoint Parse(string endpointstring, int defaultport)
{
if (string.IsNullOrEmpty(endpointstring)
|| endpointstring.Trim().Length == 0)
{
throw new ArgumentException("Endpoint descriptor may not be empty.");
}
if (defaultport != -1 &&
(defaultport < IPEndPoint.MinPort
|| defaultport > IPEndPoint.MaxPort))
{
throw new ArgumentException(string.Format("Invalid default port '{0}'", defaultport));
}
string[] values = endpointstring.Split(new char[] { ':' });
IPAddress ipaddy;
int port = -1;
//check if we have an IPv6 or ports
if (values.Length <= 2) // ipv4 or hostname
{
if (values.Length == 1)
//no port is specified, default
port = defaultport;
else
port = getPort(values[1]);
//try to use the address as IPv4, otherwise get hostname
if (!IPAddress.TryParse(values[0], out ipaddy))
ipaddy = getIPfromHost(values[0]);
}
else if (values.Length > 2) //ipv6
{
//could [a:b:c]:d
if (values[0].StartsWith("[") && values[values.Length - 2].EndsWith("]"))
{
string ipaddressstring = string.Join(":", values.Take(values.Length - 1).ToArray());
ipaddy = IPAddress.Parse(ipaddressstring);
port = getPort(values[values.Length - 1]);
}
else //[a:b:c] or a:b:c
{
ipaddy = IPAddress.Parse(endpointstring);
port = defaultport;
}
}
else
{
throw new FormatException(string.Format("Invalid endpoint ipaddress '{0}'", endpointstring));
}
if (port == -1)
throw new ArgumentException(string.Format("No port specified: '{0}'", endpointstring));
return new IPEndPoint(ipaddy, port);
}
private static int getPort(string p)
{
int port;
if (!int.TryParse(p, out port)
|| port < IPEndPoint.MinPort
|| port > IPEndPoint.MaxPort)
{
throw new FormatException(string.Format("Invalid end point port '{0}'", p));
}
return port;
}
private static IPAddress getIPfromHost(string p)
{
var hosts = Dns.GetHostAddresses(p);
if (hosts == null || hosts.Length == 0)
throw new ArgumentException(string.Format("Host not found: {0}", p));
return hosts[0];
}
已经过测试，可以使用以下示例：
看起来已经有一个内置的Parse方法处理ip4和ip6地址http://msdn.microsoft.com/en-us/library/system.net.ipaddress.parse%28v=vs.110%29.aspx
// serverIP can be in ip4 or ip6 format
string serverIP = "192.168.0.1";
string port = 8000;
IPEndPoint remoteEP = new IPEndPoint(IPAddress.Parse(serverIP), port);
这是我解析IPEndPoint文本的版本：
private static IPEndPoint ParseIPEndPoint(string text)
{
Uri uri;
if (Uri.TryCreate(text, UriKind.Absolute, out uri))
return new IPEndPoint(IPAddress.Parse(uri.Host), uri.Port < 0 ? 0 : uri.Port);
if (Uri.TryCreate(String.Concat("tcp://", text), UriKind.Absolute, out uri))
return new IPEndPoint(IPAddress.Parse(uri.Host), uri.Port < 0 ? 0 : uri.Port);
if (Uri.TryCreate(String.Concat("tcp://", String.Concat("[", text, "]")), UriKind.Absolute, out uri))
return new IPEndPoint(IPAddress.Parse(uri.Host), uri.Port < 0 ? 0 : uri.Port);
throw new FormatException("Failed to parse text to IPEndPoint");
}
经测试：
这将执行IPv4和IPv6。此功能的扩展方法将在System.string上。我不确定我对项目中的每个字符串都要这个选项。
private static IPEndPoint IPEndPointParse(string endpointstring)
{
string[] values = endpointstring.Split(new char[] {':'});
if (2 > values.Length)
{
throw new FormatException("Invalid endpoint format");
}
IPAddress ipaddress;
string ipaddressstring = string.Join(":", values.Take(values.Length - 1).ToArray());
if (!IPAddress.TryParse(ipaddressstring, out ipaddress))
{
throw new FormatException(string.Format("Invalid endpoint ipaddress '{0}'", ipaddressstring));
}
int port;
if (!int.TryParse(values[values.Length - 1], out port)
|| port < IPEndPoint.MinPort
|| port > IPEndPoint.MaxPort)
{
throw new FormatException(string.Format("Invalid end point port '{0}'", values[values.Length - 1]));
}
return new IPEndPoint(ipaddress, port);
}
创建一个扩展方法Parse和TryParse。我想这更优雅。
解析代码对于IPv4端点很简单，但IPv6地址上的IPEndPoint.ToString（）也使用相同的冒号表示法，但与IPv6地址的冒号表示法冲突。我希望微软会花费大量精力编写这个丑陋的解析代码，但我想我必须......
这是我对解析IPEndPoint的看法。使用Uri类可以避免必须处理IPv4 / 6的细节以及端口的存在与否。您可以修改应用程序的默认端口。
public static bool TryParseEndPoint(string ipPort, out System.Net.IPEndPoint result)
{
result = null;
string scheme = "iiiiiiiiiaigaig";
GenericUriParserOptions options =
GenericUriParserOptions.AllowEmptyAuthority |
GenericUriParserOptions.NoQuery |
GenericUriParserOptions.NoUserInfo |
GenericUriParserOptions.NoFragment |
GenericUriParserOptions.DontCompressPath |
GenericUriParserOptions.DontConvertPathBackslashes |
GenericUriParserOptions.DontUnescapePathDotsAndSlashes;
UriParser.Register(new GenericUriParser(options), scheme, 1337);
Uri parsedUri;
if (!Uri.TryCreate(scheme + "://" + ipPort, UriKind.Absolute, out parsedUri))
return false;
System.Net.IPAddress parsedIP;
if (!System.Net.IPAddress.TryParse(parsedUri.Host, out parsedIP))
return false;
result = new System.Net.IPEndPoint(parsedIP, parsedUri.Port);
return true;
}
如果始终在':'之后提供端口号，则以下方法可能是更优雅的选项（代码长度而不是效率）。
public static IPEndpoint ParseIPEndpoint(string ipEndPoint) {
int ipAddressLength = ipEndPoint.LastIndexOf(':');
return new IPEndPoint(
IPAddress.Parse(ipEndPoint.Substring(0, ipAddressLength)),
Convert.ToInt32(ipEndPoint.Substring(ipAddressLength + 1)));
}
它适用于我的简单应用程序，而不考虑复杂的IP地址格式。