Question

I want to run two instance of my program on my machine.
Each instance needs localhost named pipe:

_host = new ServiceHost(typeof(ManagementConsole),
            new Uri[]
            {
                new Uri("net.pipe://localhost")
            });

_host.AddServiceEndpoint(typeof(IManagementConsole),
     new NetNamedPipeBinding(),
     "PipeManagementConsole");

_host.Open();

In another instance of my program I use PipeManagementConsole2

So clients supposed to used net.pipe://localhost/PipeManagementConsole and net.pipe://localhost/PipeManagementConsole2.

However Windows doesn’t allow second instance of my program to run, it claims that net.pipe://localhost is already in use (and it is), how can I fix this issue?

Answer 1

different address should be specified when creating ServiceHost, not when calling AddServiceEndpoint.

This code works fine:

_host = new ServiceHost(typeof(ManagementConsole),
                            new Uri[]
                            {
                                new Uri("net.pipe://localhost/2")
                            });

_host.AddServiceEndpoint(typeof(IManagementConsole),
    new NetNamedPipeBinding(),
    "PipeManagementConsole");

_host.Open();

Clients should use "net.pipe://localhost/2/PipeManagementConsole"

But this code doesn’t work:

_host = new ServiceHost(typeof(ManagementConsole),
                        new Uri[]
                        {
                            new Uri("net.pipe://localhost")
                        });

_host.AddServiceEndpoint(typeof(IManagementConsole),
    new NetNamedPipeBinding(),
    "PipeManagementConsole2");

_host.Open();

if net.pipe://localhost/PipeManagementConsole is already in use

I don’t know why net.pipe://localhost/2/PipeManagementConsole is better than net.pipe://localhost/PipeManagementConsole2