azure - Is it possible to query for VIP (with endpoint ports) both in emulated compute environment and in cloud "cleanly"?

Question

I have two Web Roles, another of which provides a data API an another one hosts a frontend www site and then some compute roles that produce data.

What I would like to achieve is in the www Web Role to query the VIP of the data API Web Role by running a query function that abstracts the details if I'm running locally or in Azure. It looks like querying the PublicIPEndpoint would work in Azure, but not locally. The need would be such that I could further give out, say, some URL constants for JavaScript.

Is there a better way than to hardcode some string or, say, read the .csdef file with a relative path and take it from there?

In code crudely something like

let IsInAzureFabric =
    try
        RoleEnvironment.IsAvailable       
    with _ ->
        false                

let IsInAzureCloud =
    try
        IsInAzureFabric && not RoleEnvironment.IsEmulated
    with _ ->
        false

let GetVirtualIP(roleName, endPoint) =        
    try
        if IsInAzureCloud then
            //Collect the protocol (http/https) from the endpoint information and pick only one endpoint as it's the one shown on the loadbalancer...
            RoleEnvironment.Roles.[roleName].Instances
            |> Seq.map(fun roleInstance -> "http://" + roleInstance.InstanceEndpoints.[endPoint].PublicIPEndpoint.ToString())
        elif IsInAzureFabric then
            //In local development fabric...
            Seq.ofList ["http://localhost:8080"]
        else
            //This is locally outside of Azure Fabric (or in virtual machine?).
            Seq.ofList ["http://localhost:1943"]
    with _ ->
        Seq.empty