namespace Nwc.XmlRpc { using System; using System.Runtime.Remoting.Proxies; using System.Runtime.Remoting.Messaging; /// <summary>This class provides support for creating local proxies of XML-RPC remote objects</summary> /// <remarks> /// To create a local proxy you need to create a local C# interface and then, via <i>createProxy</i> /// associate that interface with a remote object at a given URL. /// </remarks> public class XmlRpcClientProxy : RealProxy { private String _remoteObjectName; private String _url; private XmlRpcRequest _client = new XmlRpcRequest(); /// <summary>Factory method to create proxies.</summary> /// <remarks> /// To create a local proxy you need to create a local C# interface with methods that mirror those of the server object. /// Next, pass that interface into <c>createProxy</c> along with the object name and URL of the remote object and /// cast the resulting object to the specifice interface. /// </remarks> /// <param name="remoteObjectName"><c>String</c> The name of the remote object.</param> /// <param name="url"><c>String</c> The URL of the remote object.</param> /// <param name="anInterface"><c>Type</c> The typeof() of a C# interface.</param> /// <returns><c>Object</c> A proxy for your specified interface. Cast to appropriate type.</returns> public static Object createProxy(String remoteObjectName, String url, Type anInterface) { return new XmlRpcClientProxy(remoteObjectName, url, anInterface).GetTransparentProxy(); } private XmlRpcClientProxy(String remoteObjectName, String url, Type t) : base(t) { _remoteObjectName = remoteObjectName; _url = url; } /// <summary>The local method dispatcher - do not invoke.</summary> override public IMessage Invoke(IMessage msg) { IMethodCallMessage methodMessage = (IMethodCallMessage)msg; _client.MethodName = _remoteObjectName + "." + methodMessage.MethodName; _client.Params.Clear(); foreach (Object o in methodMessage.Args) _client.Params.Add(o); try { Object ret = _client.Invoke(_url); return new ReturnMessage(ret,null,0, methodMessage.LogicalCallContext, methodMessage); } catch (Exception e) { return new ReturnMessage(e, methodMessage); } } } }