This example（Events.java） cannot be run!

[ZYunf]

I have a Exception:

javax.websocket.DeploymentException: The HTTP response from the server [404] did not permit the HTTP upgrade to WebSocket

It comes from WebSocketEventStream,I don't know how to solve this problem，I hope to get your advice！Thank you in advance！
@dmacvicar

[renner]

Hey @ZYunf, thanks for reaching out! I just tried to run the Events.java example and in fact it is working here as expected. You need both salt-master and salt-api services to be running with a proper configuration, and then you would change Events.java to match that configuration. For instance if your master configuration has:

rest_cherrypy:
  port: 9080
  host: 0.0.0.0
  ...

external_auth:
  auto:
    admin:
      - .*

Your java code should look like this (please replace hostname with yours):

private static final String SALT_API_URL = "http://hostname:9080";
private static final String USER = "admin";
private static final String PASSWORD = "";

And one more important hint: the ws4py websocket library for Python needs to be installed on the machine where salt-api is running. In openSUSE distributions you can install it to your system via zypper in python3-ws4py, but other distributions should have that package as well under a similar name or you can get it from PyPi (pip install ws4py).

I hope that might help you, otherwise feel free to provide some more details about your setup, for example the configuration you are using for running the API.

[ZYunf]

@renner Thank you for your prompt reply! I've already installed ws4py,and then I have restarted salt-master and salt-minion.But it seems that ws4py is not working.I run the other modules in Java that work very well.I have got the token.But running Events.java, the following error occurred:

Token: a7ea83b912b273fdcbbd3ae0ce37d3523f03c217
Exception: javax.websocket.DeploymentException: Handshake error.

ws4py and cherrypy has been installed like this:

The following is my configuration file in /etc/salt/master.d/
filename:api.config

rest_cherrypy:
  port: 8000
  host: 0.0.0.0
  disable_ssl: True
  debug: True
  ssl_crt: /etc/pki/tls/certs/localhost.crt
  ssl_key: /etc/pki/tls/certs/localhost.key

Filename:auth.config

external_auth:
  pam:
    saltapi:
      - .*
      - '@wheel'
      - '@runner'
      - '@jobs'

Description of my operating environment
My salt-master is in docker and code runs on the host machine.The port(8000) of the salt-api has been mapped to the host port(8088).so my code like this:

    private static final String SALT_API_URL = "http://localhost:8088";
    private static final String USER = "saltapi";
    private static final String PASSWORD = "saltapi";

I'm not sure if websocket can't be connected due to port problems,or because ws4py doesn't work.Up to now, the error(Handshake error) has not been resolved.I'm looking forward to your help！Thanks!

[NemanyaM]

@ZYunf If you make ws4py set up correctly, and try to obtain AuthModule.PAM when obtaining a login token, shouldn't give you a Handshake error.