applyOsgi("jar", "osgiApi", bndProperties)
  }
}

private fun Project.applyOsgi(
  jarTaskName: String,
  osgiApiConfigurationName: String,
  bndProperties: Array<out String>,
) {
  val osgi = project.sourceSets.create("osgi")
  val osgiApi = project.configurations.getByName(osgiApiConfigurationName)

  project.dependencies {
    osgiApi(kotlinOsgi)
  }

  val jarTask = tasks.getByName<Jar>(jarTaskName)

		<osgi-version-qualifier>${maven.build.timestamp}</osgi-version-qualifier>
		<osgi.version>${parsedVersion.majorVersion}.${parsedVersion.minorVersion}.${parsedVersion.incrementalVersion}.${osgi-version-qualifier}</osgi.version>
		<osgi.pkg.version>${parsedVersion.majorVersion}.${parsedVersion.minorVersion}.${parsedVersion.incrementalVersion}</osgi.pkg.version>
	</properties>
	<build>
		<plugins>

       has changed. That is the purpose of this normalization block.
   */
    ignore("okhttp3/osgi/workspace/cnf/repo/index.xml.gz")
    ignore("okhttp3/osgi/workspace/cnf/repo/index.xml.gz.sha")
  }
}

// Expose OSGi jars to the test environment.
val osgiTestDeploy: Configuration by configurations.creating

val test = tasks.named("test")

kotlin-reflect = { module = "org.jetbrains.kotlin:kotlin-reflect", version.ref = "org-jetbrains-kotlin" }
kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "org-jetbrains-kotlin" }
kotlin-stdlib-osgi = { module = "org.jetbrains.kotlin:kotlin-osgi-bundle", version.ref = "org-jetbrains-kotlin" }
kotlin-test-annotations = { module = "org.jetbrains.kotlin:kotlin-test-annotations-common", version.ref = "org-jetbrains-kotlin" }

include(":okhttp-coroutines")
include(":okhttp-dnsoverhttps")
include(":okhttp-hpacktests")
include(":okhttp-idna-mapping-table")
include(":okhttp-java-net-cookiejar")
include(":okhttp-logging-interceptor")
include(":okhttp-osgi-tests")
include(":okhttp-sse")
include(":okhttp-testing-support")
include(":okhttp-tls")
include(":okhttp-urlconnection")
include(":okhttp-zstd")
include(":samples:compare")
include(":samples:crawler")

# Including WSGI - Flask, Django, others { #including-wsgi-flask-django-others }

You can mount WSGI applications as you saw with [Sub Applications - Mounts](sub-applications.md){.internal-link target=_blank}, [Behind a Proxy](behind-a-proxy.md){.internal-link target=_blank}.

For that, you can use the `WSGIMiddleware` and use it to wrap your WSGI application, for example, Flask, Django, etc.

## Using `WSGIMiddleware` { #using-wsgimiddleware }

/// note | Technical Details

ASGI is a new "standard" being developed by Django core team members. It is still not a "Python standard" (a PEP), although they are in the process of doing that.

Nevertheless, it is already being used as a "standard" by several tools. This greatly improves interoperability, as you could switch Uvicorn for any other ASGI server (like Daphne or Hypercorn), or you could add ASGI compatible tools, like `python-socketio`.

## Adding ASGI middlewares { #adding-asgi-middlewares }

As **FastAPI** is based on Starlette and implements the <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr> specification, you can use any ASGI middleware.

A middleware doesn't have to be made for FastAPI or Starlette to work, as long as it follows the ASGI spec.

* <a href="https://tartiflette.io/" class="external-link" target="_blank">Tartiflette</a>
    * With <a href="https://tartiflette.github.io/tartiflette-asgi/" class="external-link" target="_blank">Tartiflette ASGI</a> to provide ASGI integration
* <a href="https://graphene-python.org/" class="external-link" target="_blank">Graphene</a>

## ASGI Servers { #asgi-servers }

Let's go a little deeper into the details.

FastAPI uses a standard for building Python web frameworks and servers called <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr>. FastAPI is an ASGI web framework.