esp-idf/tools/esp_prov/transport/transport_http.py

50 lines
2.1 KiB
Python

# SPDX-FileCopyrightText: 2018-2023 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Apache-2.0
#
import socket
from http.client import HTTPConnection, HTTPSConnection
from utils import str_to_bytes
from .transport import Transport
class Transport_HTTP(Transport):
def __init__(self, hostname, ssl_context=None):
try:
socket.gethostbyname(hostname.split(':')[0])
except socket.gaierror:
raise RuntimeError(f'Unable to resolve hostname: {hostname}')
if ssl_context is None:
self.conn = HTTPConnection(hostname, timeout=60)
else:
self.conn = HTTPSConnection(hostname, context=ssl_context, timeout=60)
try:
print(f'++++ Connecting to {hostname}++++')
self.conn.connect()
except Exception as err:
raise RuntimeError('Connection Failure : ' + str(err))
self.headers = {'Content-type': 'application/x-www-form-urlencoded','Accept': 'text/plain'}
def _send_post_request(self, path, data):
data = str_to_bytes(data) if isinstance(data, str) else data
try:
self.conn.request('POST', path, data, self.headers)
response = self.conn.getresponse()
# While establishing a session, the device sends the Set-Cookie header
# with value 'session=cookie_session_id' in its first response of the session to the tool.
# To maintain the same session, successive requests from the tool should include
# an additional 'Cookie' header with the above recieved value.
for hdr_key, hdr_val in response.getheaders():
if hdr_key == 'Set-Cookie':
self.headers['Cookie'] = hdr_val
if response.status == 200:
return response.read().decode('latin-1')
except Exception as err:
raise RuntimeError('Connection Failure : ' + str(err))
raise RuntimeError('Server responded with error code ' + str(response.status))
async def send_data(self, ep_name, data):
return self._send_post_request('/' + ep_name, data)