Post requests result in tornado access warning

goosst · July 10, 2020, 5:13am

What is the problem?
I can't successfully run post requests through the REST api.
e.g. following python code:

headers_octoprint={
    'Host': '192.168.0.xxx',
    'X-Api-Key': 'xxxxxxx',
}

payload={'command': 'M114'}

url='http://'+address_octo+':5000/api/printer/command'
response = post(url,data=payload,headers=headers_octo)

headers_octoprint2={
    'Host': '192.168.0.xxx',
    'X-Api-Key': 'xxxxx',
    'command': 'M114'
}

url='http://'+address_octo+':5000/api/printer/command'
response = post(url,headers=headers_octoprint2)

gives me errors and warnings in the octoprint log:

2020-07-10 07:05:15,712 - tornado.access - ERROR - 500 POST /api/printer/command (192.168.0.xxx) 6.78ms
2020-07-10 07:05:34,781 - tornado.access - WARNING - 400 POST /api/printer/command (192.168.0.xxx) 7.66ms

executing GET requests however, returns information as expected ... .

What did you already try to solve it?

I've modified the settings in "Access control" to the level needed according the documentation of the rest-api (control: https://docs.octoprint.org/en/master/api/printer.html#send-an-arbitrary-command-to-the-printer
I've tried three API keys (one in the "Access control", one when clicking on my username --> "user settings", one pushing the button "Manually generate an applicaton key")

Logs (octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support!)

output in octoprint window:

2020-07-10 07:05:15,712 - tornado.access - ERROR - 500 POST /api/printer/command (192.168.0.xxx) 6.78ms
2020-07-10 07:05:34,781 - tornado.access - WARNING - 400 POST /api/printer/command (192.168.0.xxx) 7.66ms

result python:

>>> response = post(url,data=payload,headers=headers_octo)
>>> response
<Response [400]>
>>> response.text
'Expected content type JSON'

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible)

Octoprint Version 1.4.0, running on debian buster 32 bit (LMDE 4.0).
installed in virtual environment and through pip, in line with: Setting up OctoPrint on a Raspberry Pi running Raspbian

foosel · July 10, 2020, 7:02am

Not just log excerpts please but the full unedited unabridged logs.

The response already tells you what the problem is though, you forgot to set the correct content type on your request.

https://docs.octoprint.org/en/master/api/general.html#content-type

goosst · July 10, 2020, 5:34pm

ok thanks, that was pretty stupid For the ones with the same problem and trying it in python, some working code is below ... .

headers_octoprint={
    'content-type': 'application/json',
    'Host': '192.168.0.xxx',
    'X-Api-Key': 'xxxxx',
}

data = {}
data['command'] = 'M114'
payload = json.dumps(data)
url='http://'+address_octo+':5000/api/printer/command'
response = post(url,data=payload,headers=headers_octo)
temp=response.text