如何在一对多场景中使用IDuplexSessionRouter
本文关键字:IDuplexSessionRouter 一对多 | 更新日期: 2023-09-27 18:20:15
我的WCF服务是这样工作的:您可以通过调用服务方法来订阅它们,比如subscribe()。他们会在回调通道上向您发回结果,比如MessageReceived(字符串消息)。我现在的问题是,我的路由器只将第一个Subscribe调用路由到其端点列表中的第一个服务。因此,我只从一个服务端点得到回调消息,而不是同时从两个服务端点都得到。我希望订阅两个端点并从两个端点获得回调。这是我的代码(请注意,我在serviceAddresses字符串中有两个net.tcp地址):
private void StartAggregatorHost(List<string> serviceAddresses)
{
// Create a new service host for the routing service (note that RoutingService is a pre-defined Microsoft service model type which routes SOAP messages).
aggregatorHost = new ServiceHost(typeof(RoutingService));
// Set up the router address. A logger client will now connect to this address to get logged messages.
string fqdn = System.Net.Dns.GetHostEntry("localhost").HostName;
string routerAddress = string.Format("net.tcp://{0}:2099/LogAggregator", fqdn);
// Set up our router binding.
NetTcpBinding routerBinding = new NetTcpBinding(SecurityMode.None, true);
routerBinding.SendTimeout = new TimeSpan(0, 1, 0);
routerBinding.ReceiveTimeout = new TimeSpan(25, 0, 0);
routerBinding.MaxReceivedMessageSize = int.MaxValue;
routerBinding.MaxConnections = int.MaxValue;
routerBinding.ListenBacklog = int.MaxValue;
routerBinding.ReliableSession.Enabled = true;
routerBinding.ReliableSession.Ordered = true;
routerBinding.ReliableSession.InactivityTimeout = new TimeSpan(15, 0, 0, 0);
// Define the type of router in use. For duplex sessions like in our case, we want to use the IDuplexSessionRouter.
Type contractType = typeof(IDuplexSessionRouter);
// Add the endpoint that the router will use to recieve and relay messages. Note the use of System.ServiceModel.Routing.IDuplexSessionRouter.
aggregatorHost.AddServiceEndpoint(contractType, routerBinding, routerAddress);
// Create the endpoint list that contains the service endpoints we want to route to.
List<ServiceEndpoint> endpointList = new List<ServiceEndpoint>();
foreach (string serverAddress in serviceAddresses)
{
// Set up our server binding(s) for each server.
NetTcpBinding serverBinding = new NetTcpBinding(SecurityMode.None, true);
serverBinding.SendTimeout = new TimeSpan(0, 1, 0);
serverBinding.ReceiveTimeout = new TimeSpan(25, 0, 0);
serverBinding.MaxReceivedMessageSize = int.MaxValue;
serverBinding.MaxConnections = 1;
serverBinding.ListenBacklog = int.MaxValue;
serverBinding.ReliableSession.Enabled = true;
serverBinding.ReliableSession.Ordered = true;
serverBinding.ReliableSession.InactivityTimeout = new TimeSpan(15, 0, 0, 0);
// Create the server endpoint the router will route messages to and from.
ContractDescription contract = ContractDescription.GetContract(contractType);
ServiceEndpoint server = new ServiceEndpoint(contract, serverBinding, new EndpointAddress(serverAddress));
// Add the server to the list of endpoints.
endpointList.Add(server);
}
// Create a new routing configuration object.
RoutingConfiguration routingConfiguration = new RoutingConfiguration();
// Add a MatchAll filter to the Router's filter table. Map it to the endpoint list defined earlier. When a message matches this filter, it will be sent to the endpoint contained in the list.
routingConfiguration.FilterTable.Add(new MatchAllMessageFilter(), endpointList);
// Attach the behavior to the service host.
aggregatorHost.Description.Behaviors.Add(new RoutingBehavior(routingConfiguration));
// Open the service host.
aggregatorHost.Open();
m_eventLog.WriteEntry(string.Format("Log aggregator service hosted at {0}.", routerAddress), EventLogEntryType.Information);
}
所以再一次。。。这就是我想要的:
CLIENT ---REQ---> ROUTER ---REQ---> SVC1
---REQ---> SVC2
CLIENT <---CALLBACK1--- ROUTER <---CALLBACK1--- SVC1
<---CALLBACK2--- <---CALLBACK2--- SVC2
这就是我现在得到的:
CLIENT ---REQ---> ROUTER ---REQ---> SVC1
CLIENT <---CALLBACK--- ROUTER <---CALLBACK--- SVC1
我缺少的是优先级。我想传入列表会自动生成优先级,所以你需要单独添加每个服务并指定其优先级:routingConfiguration.FilterTable.add(new MatchAllMessageFilter(),new list{yourService},1);