CODEWITHSUNDEEP
pythoncurl
imll
imll

Reputation: 341

How to execute a "curl -X POST" in python code

I'm trying to make a request, in python, from a VM running Ryu controller to a VM running a openvswitch. I've tested said request, and it works when I execute it in a terminal (a string is supposed to be returned):

curl -X POST -d '{"priority": 500, "match": {"in_port": 3}}' http://localhost:8080/stats/flow/8796748823560

This was my first try in python:

import subprocess

proc = subprocess.run(['curl', '-X', 'POST', '-d', '\'{"priority": 500, "match": { "in_port": 3} }\'','http://localhost:8080/stats/flow/8796748823560'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

response = proc.stdout.decode('utf-8')

A simple POST, as you can see. However, the response is always " ", showing the error:

curl: (3) URL using bad/illegal format or missing URL

Then, I decided to use the requests python library and wrote the POST the following way:

import requests

data = '{ "priority": 500, "match": {"in_port": 3}}'

response = requests.post('http://localhost:8080/stats/flow/234', data=data)

However, I don't know where to put the option -X. In the library documentation, I cannot find the right place to put it, if there is any.

I need help to understand where I should place that -X option in the code and, if it is not possible, how could I execute that curl on python (I was trying to avoid the shell=True flag on subprocess, as I don't think it is safe).

Upvotes: 0

Views: 644

Answers (1)

Antti Haapala -- Слава Україні
Antti Haapala -- Слава Україні

Reputation: 133849

The -X/--request in curl is an option that is followed by the HTTP verb to be used in the request. Since this is followed by POST it means that a POST request should be used. In fact -X POST is not needed since the mere presence of -d should cause curl to make a HTTP POST request.

Thus, use of request.post with data containing the body should be sufficient.

Upvotes: 1

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