WCF服务侦听多个端口

Question

I need to install a WCF service on a single server but I need to listen to multiple ports (due to various issues with machines running the client). It's not clear to me if this can be done with one ServiceHost and: one "class dervied from"(CDF) ServiceBase with two endpoints , or if I need two CDF ServiceBase s each with a single endpoint . Here is the relevant code in relevant files:

Program.cs

static class Program
{
    static void Main()
    {
        ServiceBase[] ServicesToRun;
        ServicesToRun = new ServiceBase[]
        {
            new Service1()
        };
        ServiceBase.Run(ServicesToRun);
    }
}

Service1.cs

public partial class Service1 : ServiceBase
{
    private wcfServer _server;
    ServiceHost serviceHost;

    public Service1()
    {
        InitializeComponent();
    }

    protected override void OnStart(String[] args)
    {
        _server = new wcfServer();
        serviceHost = new ServiceHost(_server);
        serviceHost.Open();
    }

    protected override void OnStop()
    {
        if (serviceHost != null)
            serviceHost.Close();
    }
}

wcfServer.cs

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single,
    ConcurrencyMode=ConcurrencyMode.Multiple)]
public class wcfServer : IwcfServer { /* ... */ }

app.config

<services>
    <service name="MyService.wcfServer">
        <endpoint address=""
            bindingConfiguration="BigDataBinding"
            binding="basicHttpBinding"
            contract="DataBackups.IwcfServer">
            <identity>
                <dns value="localhost" />
            </identity>
        </endpoint>

        <endpoint address="mex"
            binding="mexHttpBinding"
            contract="IMetadataExchange" />

        <host>
            <baseAddresses>
                <add baseAddress="http://localhost/DataBackups/wcfServer/" />
            </baseAddresses>
        </host>
    </service>
</services>
</system.serviceModel>

I should note that

1. the current "solution" to this issue is to alter the installer to allow us to install the service on the server twice .
2. the purpose of the service is to handle multiple concurrent requests that, in part, stream big data (in case this is relevant).

Can someone provide an example of how to accomplish this?

Also, I do not understand how <service> configurations in app.config relate to CDF ServiceBase instances created programmatically. In the current setup, there is only a single Service1 instance and a single configuration in app.config , so I imagine they "line up." But, what if I there are multiple Service1 instances (which I might need)? How do I "choose" which service I am configuring?

Answer 1

Your WCF Service should have no issue listening on multiple ports. You just need to expand the baseAddress section of your app.config file as follows:

<baseAddresses>
  <add baseAddress="http://localhost:80/DataBackups/wcfServer/" />
  <add baseAddress="http://localhost:8732/DataBackups/wcfServer/" />
</baseAddresses>