---
title: "The connection endpoint parameters"
slug: "the-connection-endpoint-parameters"
abstract: "Overview of the Instance URL parameter and the available properties."
---
# The connection endpoint parameters

When you configure a session, you should use the `Instance URL` parameter to define a host. It is the first parameter you use to invoke a session initializer.

| Property | Details |
| --- | --- |
| Session builder API | `SessionWithHost (string)` |
| Sample value | `http://my-site.com:80` |
| Parameter position | First in a sequence |
| Required\optional | Required for all session types |
| Multiple invocations | Multiple invocations do not compile |
| Value validation | Must contain at least one symbol besides whitespace characters |

> [!note]
> If you do not specify the URL scheme in the `Instance URL` parameter, the default value is http. For example, my-site.com is resolved as http://my-site.com.