wcf - 获取WCF的客户端IP地址，操作后

Question

我正在尝试通过此链接确定客户端的 IP 地址:http://www.danrigsby.com/blog/index.php/2008/05/21/get-the-clients-address-in-wcf/

In .Net 3.0 there was not a reliable way to obtain the address of the client connecting to a WCF service. In .Net 3.5 a new property was introduced called RemoteEndpointMessageProperty. This property gives you the IP address and port that the client connection came into the service on. Obtaining the this information is pretty straight forward. Just pull it from the IncomingMessageProperties of the current OperationContext by the RemoteEndpointMessageProperty.Name and access the Address and Port properties.

> [ServiceContract] public interface IMyService {
>     [OperationContract]
>     string GetAddressAsString(); }
> 
> public class MyService : IMyService {
>     public string GetAddressAsString()
>     {
>         RemoteEndpointMessageProperty clientEndpoint =
>             OperationContext.Current.IncomingMessageProperties[
>             RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
> 
>         return String.Format(
>             "{0}:{1}",
>             clientEndpoint.Address, clientEndpoint.Port);
>     } } 

Things to note:

1. This property only works on http and tcp transports. On all other transports such as MSMQ and NamedPipes, this property will not be available.
2. The address and port are reported by the socket or http.sys of the service’s machine. So if the client came in over a VPN or some other proxy that modified the address, that new address will be represented instead of the client’s local address. This is desirable and important because this is the address and port that the service sees the client as, not as the client sees itself as. This also means that there could be some spoofing going on. A client or something in between the client and server could spoof an address. So, do not use the address or port for any security decisions unless you add in some other custom checking mechanisms.
3. If you are using duplexing on your service, then not only will the service have this property populated for the client, but the client will also have this property populated for the service for each call from that service.

我有WebInvoke/Post和WebGet的操作契约(Contract)。当客户端请求是 WebGet 时，该代码有效。但是当客户端请求是WebInvoke时，我将获取WCF主机IP。有什么解决办法吗？谢谢。

这是界面

[OperationContract]
[WebGet(UriTemplate = RestTemplate.hello_get)]
Stream hello_get();

[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = RestTemplate.hello_post)]
Stream hello_post();

// Code for getting IP
private string getClientIP()
{
    //WebOperationContext webContext = WebOperationContext.Current;

    OperationContext context = OperationContext.Current;

    MessageProperties messageProperties = context.IncomingMessageProperties;

    RemoteEndpointMessageProperty endpointProperty =

    messageProperties[RemoteEndpointMessageProperty.Name]

    as RemoteEndpointMessageProperty;
    return endpointProperty.Address;
}

public Stream hello_get()
{
    string ip = getClientIP();
    ...
}

public Stream hello_post()
{
    string ip = getClientIP();
    ...
} 

Answer 1

您尝试过使用 HttpContext 吗？它并非在所有 WCF 模式中都可用，但这可能会根据您的环境而起作用:

if (HttpContext.Current != null)
            {
                Trace.WriteLine(
                    "Who's calling? IP address: '{0}', Name: '{1}', User Agent: '{2}', URL: '{3}'.",
                    HttpContext.Current.Request.UserHostAddress, HttpContext.Current.Request.UserHostName,
                    HttpContext.Current.Request.UserAgent, HttpContext.Current.Request.Url);
            }