Creates or gets a uri for a service or unique name with a random free port.

UriManager.cs

static class UriManager
{
    private static readonly IDictionary<string, Uri> Uris = new Dictionary<string, Uri>();

    public static Uri GetUriForService<TService>()
    {
        return GetUri(typeof (TService).Name);
    }

    public static Uri GetUri(string serviceName)
    {
        if (Uris.ContainsKey(serviceName))
        {
            return Uris[serviceName];
        }

        var uri = new UriBuilder(Uri.UriSchemeHttp, IPAddress.Loopback.ToString(), TcpPort.NextFreePort()).Uri;

        Uris.Add(serviceName, uri);

        return uri;
    }
}