OSError: [Errno 99] Cannot assign requested address

[Loxatan]

Hi,
thanks for your work and your plugin.
I just tried to install the whole thing on my Matrix server.
Unfortunately I get an error when I try to start the API.

When I try to start the API, I get the following error:

root@vmd76330:~# matrix-registration --config-path /etc/matrix-synapse/registration/config.yaml serve
Traceback (most recent call last):
  File "/usr/local/bin/matrix-registration", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/flask/cli.py", line 586, in main
    return super(FlaskGroup, self).main(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/flask/cli.py", line 426, in decorator
    return __ctx.invoke(f, *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/matrix_registration/app.py", line 58, in run_server
    serve(app, host=config.config.host, port=config.config.port, url_prefix=config.config.base_url)
  File "/usr/local/lib/python3.9/dist-packages/waitress/__init__.py", line 12, in serve
    server = _server(app, **kw)
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 81, in create_server
    last_serv = TcpWSGIServer(
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 239, in __init__
    self.bind_server_socket()
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 368, in bind_server_socket
    self.bind(sockaddr)
  File "/usr/local/lib/python3.9/dist-packages/waitress/wasyncore.py", line 398, in bind
    return self.socket.bind(addr)
OSError: [Errno 99] Cannot assign requested address

My Config looks like this:

server_location: 'http://localhost:8008'
server_name: 'matrix.sleser.de'
registration_shared_secret: 'Same as Homeserver.yaml' # see your synapse's homeserver.yaml
admin_api_shared_secret: 'Admin Token i got from the element app' # to generate tokens via the web api
base_url: 'https://matrix.sleser.de/element/register' # e.g. '/element' for https://example.tld/element/register
client_redirect: 'https://app.element.io/#/login'
client_logo: 'static/images/element-logo.png' # use '{cwd}' for current working directory
db: 'sqlite:///{cwd}db.sqlite3'
host: 'localhost'
port: 5000
rate_limit: ["100 per day", "10 per minute"]
allow_cors: false
ip_logging: false
logging:
  disable_existing_loggers: false
  version: 1
  root:
    level: DEBUG
    handlers: [console, file]
  formatters:
    brief:
      format: '%(name)s - %(levelname)s - %(message)s'
    precise:
      format: '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
  handlers:
    console:
      class: logging.StreamHandler
      level: INFO
      formatter: brief
      stream: ext://sys.stdout
    file:
      class: logging.handlers.RotatingFileHandler
      formatter: precise
      level: INFO
      filename: m_reg.log
      maxBytes: 10485760 # 10MB
      backupCount: 3
      encoding: utf8
# password requirements
password:
  min_length: 8
# username requirements
username:
  validation_regex: [] #list of regexes that the selected username must match.        Example: '[a-zA-Z]\.[a-zA-Z]'
  invalidation_regex: [] #list of regexes that the selected username must NOT match.  Example: '(admin|support)'

I use a Debian 11 and the Matrix Server runs at the same maschine. I installed nginx and added this to my conf:

server {
    listen 80;
    server_name matrix.example.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    server_name matrix.sleser.de;

    ssl_certificate /etc/letsencrypt/live/matrix.sleser.de/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/matrix.sleser.de/privkey.pem;

    location / {
        proxy_pass http://localhost:8008;
        proxy_set_header X-Forwarded-For $remote_addr;
        # Nginx by default only allows file uploads up to 1M in size
        # Increase client_max_body_size to match max_upload_size defined in homeserver.yaml
        client_max_body_size 10M;
    }
    location  ~ ^/(static|register) {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://localhost:5000;
    }

}

# This is used for Matrix Federation
# which is using default TCP port '8448'
server {
    listen 8448 ssl;
    server_name matrix.sleser.de;

    ssl_certificate /etc/letsencrypt/live/matrix.sleser.de/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/matrix.sleser.de/privkey.pem;

    location / {
        proxy_pass http://localhost:8008;
        proxy_set_header X-Forwarded-For $remote_addr;

}

I am new to the whole Matrix topic and hope I am not making an essential mistake. I am very grateful for any help.
Many greetings

[xelantro]

Your base_url: 'https://matrix.sleser.de/element/register' is wrong.
It should be base_url: '/element' for https://matrix.sleser.de/element/register
I'm not sure weather this is the core issue, but try changing that

[Loxatan]

Hey, thanks for your fast replay.
I changed it to '/element' but i still got the same error

root@vmd76330:~# matrix-registration --config-path /etc/matrix-synapse/registration/config.yaml serve
Traceback (most recent call last):
  File "/usr/local/bin/matrix-registration", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/flask/cli.py", line 586, in main
    return super(FlaskGroup, self).main(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/flask/cli.py", line 426, in decorator
    return __ctx.invoke(f, *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/decorators.py", line 73, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/matrix_registration/app.py", line 58, in run_server
    serve(app, host=config.config.host, port=config.config.port, url_prefix=config.config.base_url)
  File "/usr/local/lib/python3.9/dist-packages/waitress/__init__.py", line 12, in serve
    server = _server(app, **kw)
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 81, in create_server
    last_serv = TcpWSGIServer(
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 239, in __init__
    self.bind_server_socket()
  File "/usr/local/lib/python3.9/dist-packages/waitress/server.py", line 368, in bind_server_socket
    self.bind(sockaddr)
  File "/usr/local/lib/python3.9/dist-packages/waitress/wasyncore.py", line 398, in bind
    return self.socket.bind(addr)
OSError: [Errno 99] Cannot assign requested address

i had to change the bind_addresses in my homerserver.yaml config: ['::1', '127.0.0.1'] to 'localhost', otherwise the server did not start, can it be a similar problem? In the matrix-registration config its host = 'localhost', but maybe in another module?

[xelantro]

Ok so the error serve(app, host=config.config.host, port=config.config.port, url_prefix=config.config.base_url) indicates that you have problems in either:

• host (try changing that to the ip that ping localhost gives you or 0.0.0.0)
• port (is 5000 still free?)
• base_url (you fixed that)

[Loxatan]

ping localhost gave me 127.0.0.1 and i changed it.
Now it works and i can open http://localhost:5000/register.
Thank you very much.

Now I just need to make it accessible via the domain, that doesn't work yet. So neither from the server nor from the computer.
I have so far no firewall, maybe an idea what it could be?

[Loxatan]

I found the error, is because I use https, adjusted the Ngnix Matrix.conf and now I get to the page, however I can not interact with it.

[xelantro]

You set base_url: '/element' but you seem to want it to be https://matrix.sleser.de/register?lang=de not https://matrix.sleser.de/element/register?lang=de right? (judjing from your location ~ ^/(static|register) nginx config)
If so you need to set it to base_url: ''

[Loxatan]

Okay i guess i understand it now..
I changed it and now it works fine, thank you very much, you saved my evening.
Thank you for your patience :)