To enable session_id in session/authenticate JSON-RPC call in odoo13 and above

ir_http.py

# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import api, models
from odoo.http import request


class Http(models.AbstractModel):
    _inherit = 'ir.http'

    def session_info(self):
    	res = super(Http, self).session_info()
    	if not res.get('session_id'):
	    	# Add Session Id
	    	res['session_id'] = request.session.sid
    	return res