Metadata endpoints

This document gives a short introduction to the various methods forms metadata endpoints can take in SimpleSAMLphp.

The endpoints we have are:

Endpoint	Indexed	Default binding
ArtifactResolutionService	Y	SOAP
AssertionConsumerService	Y	HTTP-POST
SingleLogoutService	N	HTTP-Redirect
SingleSignOnService	N	HTTP-Redirect

The various endpoints can be specified in three different ways:

• A single string.
• Array of strings.
• Array of arrays.

A single string

'AssertionConsumerService' => 'https://sp.example.org/ACS',

This is the simplest endpoint format. It can be used when there is only a single endpoint that uses the default binding.

Array of strings

'AssertionConsumerService' => [
    'https://site1.example.org/ACS',
    'https://site2.example.org/ACS',
],

This endpoint format can be used to represent multiple endpoints, all of which use the default binding.

Array of arrays

'AssertionConsumerService' => [
    [
        'index' => 1,
        'isDefault' => TRUE,
        'Location' => 'https://sp.example.org/ACS',
        'Binding' => 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST',
    ],
    [
        'index' => 2,
        'Location' => 'https://sp.example.org/ACS',
        'Binding' => 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Artifact',
    ],
],

This endpoint format allows for specifying multiple endpoints with different bindings. It can also be used to specify the ResponseLocation attribute on endpoints, e.g. on SingleLogoutService:

'SingleLogoutService' => [
    [
        'Location' => 'https://sp.example.org/LogoutRequest',
        'ResponseLocation' => 'https://sp.example.org/LogoutResponse',
        'Binding' => 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect',
    ],
],