A smallest example that demonstrates the websocket issue on Azure webb app.

1. Leiningen
2. Maven

1. Create pom file: lein pom
2. Configure webapp plugin: mvn com.microsoft.azure:azure-webapp-maven-plugin:2.5.0:config
3. Create a uberjar: lein uberjar
4. Update the <deployment> part in pom.xml as follows:

<deployment>
<resources>
  <resource>
    <directory>${project.basedir}/target</directory>
    <includes>
      <include>app.jar</include>
    </includes>
  </resource>
</resources>
</deployment>

5. Deploy: mvn package azure-webapp:deploy