请耐心等待,因为我是 WCF 服务/Windows 服务的新手。我创建了一个托管在 Windows 服务中的 WCF 服务。我想通过 TCP 在 Silverlight 浏览器内应用程序中使用该 WCF 服务。下面是 Silverlight 中访问 WCF 服务的代码片段:
var messageEncoding = new BinaryMessageEncodingBindingElement();
var tcpTransport = new TcpTransportBindingElement();
var binding = new CustomBinding(messageEncoding, tcpTransport);
// Create a channel factory for the service endpoint configured with the custom binding.
var cf = new ChannelFactory<ICalcService>(binding, new EndpointAddress("net.tcp://192.168.2.104:4508"));
// Open the channel.
ICalcService channel = cf.CreateChannel();
// Invoke the method asynchronously.
channel.BeginAdd(9, 5, AddCallback, channel);
private void AddCallback(IAsyncResult asyncResult)
{
try
{
double endAdd = ((ICalcService) asyncResult.AsyncState).EndAdd(asyncResult);
}
catch (Exception exception)
{
throw exception;
}
}
该代码有时可以正常工作,但由于某些原因,它通常会抛出一个臭名昭著的System.ServiceModel.CommunicationException并显示以下消息:
Could not connect to net.tcp://192.168.2.104:4508/. The connection attempt lasted for a time span of 00:00:00.1010058. TCP error code 10013: An attempt was made to access a socket in a way forbidden by its access permissions.. This could be due to attempting to access a service in a cross-domain way while the service is not configured for cross-domain access. You may need to contact the owner of the service to expose a sockets cross-domain policy over HTTP and host the service in the allowed sockets port range 4502-4534.
System.Net.Sockets.SocketException类型的 innerException说
An attempt was made to access a socket in a way forbidden by its access permissions.
这种异常背后的可能原因是什么?根据我目前的调查,我只能找到一个原因:不正确的ClientAccessPolicy.xml。其他原因可能是什么?如果您有任何有用的资源,请提供给我。还有一个问题,如果我想让 Windows 服务托管的 WCF 服务被 LAN 上的其他机器使用,我必须进行哪些设置?例如防火墙设置?我的代码无法访问其他机器上的 WCF 服务。它引发了我上面提到的相同异常。关于如何摆脱这个异常的任何想法?