Doing queries leak memory

[rytilahti]

Some structures allocated by the binding are not being freed/dereffed correctly. A simple testcase:

import resource
import getdns

resolver = getdns.Context()

for i in range(10000):
extensions = {"return_both_v4_and_v6": getdns.EXTENSION_TRUE}
res = resolver.address(name="google.com", extensions=extensions)
if i % 100 == 0:
print(resource.getrusage(resource.RUSAGE_SELF).ru_maxrss)

$ pip3 list|grep getdns
getdns (1.0b0)

[MelindaShore]

By way of an update, I've isolated this to the result object and am continuing to look into it.

[Autopilot9369]

I am facing the same issue. I am performing DNS lookup inside a flask app. So with each request, the memory usage keeps on increasing. The memory gets freed only after the app is restarted/stopped.

A sample code:

import getdns
from flask import Flask, jsonify

app = Flask(__name__)


@app.route('/address')
def get_address():
    name = 'google.com'

    extensions = {"return_both_v4_and_v6": getdns.EXTENSION_TRUE}
    
    ctx = getdns.Context()
    response = ctx.address(name, extensions=extensions)

    return jsonify(data=response.just_address_answers)


if __name__ == '__main__':
    app.run()

Am I missing something? Is there any way to destroy the result object on request completion?