org.keycloak.urls

## Interface HostnameProvider

- All Superinterfaces:
    Provider
  All Known Implementing Classes:
    DefaultHostnameProvider, FixedHostnameProvider, RequestHostnameProvider

      public interface HostnameProvider
      extends Provider

  The Hostname provider is used by Keycloak to decide URLs for frontend and backend requests. A provider can either base the URL on the request (Host header for example) or based on hard-coded URLs. Further, it is possible to have different URLs on frontend requests and backend requests. Note: Do NOT use `KeycloakContext.getUri()` within a Hostname provider. It will result in an infinite loop.

- - ### Method Summary

    All Methods Instance Methods Default Methods
    Modifier and Type | Method and Description
    --- | ---
    `default void` | `close()`
    `default String` | `getContextPath(javax.ws.rs.core.UriInfo originalUriInfo)` Returns the context-path for Keycloak This is useful when Keycloak is exposed on a different context-path on a reverse proxy.
    `default String` | `getContextPath(javax.ws.rs.core.UriInfo originalUriInfo, UrlType type)` Returns the context-path for Keycloak.
    `default String` | `getHostname(javax.ws.rs.core.UriInfo originalUriInfo)` Returns the host.
    `default String` | `getHostname(javax.ws.rs.core.UriInfo originalUriInfo, UrlType type)` Returns the host.
    `default int` | `getPort(javax.ws.rs.core.UriInfo originalUriInfo)` Returns the port (or -1 for default port).
    `default int` | `getPort(javax.ws.rs.core.UriInfo originalUriInfo, UrlType type)` Returns the port (or -1 for default port).
    `default String` | `getScheme(javax.ws.rs.core.UriInfo originalUriInfo)` Returns the URL scheme.
    `default String` | `getScheme(javax.ws.rs.core.UriInfo originalUriInfo, UrlType type)` Returns the URL scheme.

- - ### Method Detail

    - #### getScheme

          default String getScheme(javax.ws.rs.core.UriInfo originalUriInfo,
                                   UrlType type)

      Returns the URL scheme. If not implemented will delegate to `getScheme(UriInfo)`.
      Parameters:
        `originalUriInfo` - the original URI
        `uype` - type of the request
      Returns:
        the schema

    - #### getScheme

          default String getScheme(javax.ws.rs.core.UriInfo originalUriInfo)

      Returns the URL scheme. If not implemented will get the scheme from the request.
      Parameters:
        `originalUriInfo` - the original URI
      Returns:
        the schema

    - #### getHostname

          default String getHostname(javax.ws.rs.core.UriInfo originalUriInfo,
                                     UrlType type)

      Returns the host. If not implemented will delegate to `getHostname(UriInfo)`.
      Parameters:
        `originalUriInfo` - the original URI
        `type` - type of the request
      Returns:
        the host

    - #### getHostname

          default String getHostname(javax.ws.rs.core.UriInfo originalUriInfo)

      Returns the host. If not implemented will get the host from the request.
      Parameters:
        `originalUriInfo` -
      Returns:
        the host

    - #### getPort

          default int getPort(javax.ws.rs.core.UriInfo originalUriInfo,
                              UrlType type)

      Returns the port (or -1 for default port). If not implemented will delegate to `getPort(UriInfo)`
      Parameters:
        `originalUriInfo` - the original URI
        `type` - type of the request
      Returns:
        the port

    - #### getPort

          default int getPort(javax.ws.rs.core.UriInfo originalUriInfo)

      Returns the port (or -1 for default port). If not implemented will get the port from the request.
      Parameters:
        `originalUriInfo` - the original URI
      Returns:
        the port

    - #### getContextPath

          default String getContextPath(javax.ws.rs.core.UriInfo originalUriInfo,
                                        UrlType type)

      Returns the context-path for Keycloak. This is useful when Keycloak is exposed on a different context-path on a reverse proxy. If not implemented will delegate to `getContextPath(UriInfo)`
      Parameters:
        `originalUriInfo` - the original URI
        `type` - type of the request
      Returns:
        the context-path

    - #### getContextPath

          default String getContextPath(javax.ws.rs.core.UriInfo originalUriInfo)

      Returns the context-path for Keycloak This is useful when Keycloak is exposed on a different context-path on a reverse proxy. If not implemented will use the context-path from the request, which by default is /auth
      Parameters:
        `originalUriInfo` - the original URI
      Returns:
        the context-path

    - #### close

          default void close()

      Specified by:
        `close` in interface `Provider`

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