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

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# Copyright 2018 Espressif Systems (Shanghai) PTE LTD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from __future__ import print_function
from future.utils import tobytes
import socket
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try:
from http.client import HTTPConnection, HTTPSConnection
except ImportError:
# Python 2 fallback
from httplib import HTTPConnection, HTTPSConnection
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from .transport import Transport
class Transport_HTTP(Transport):
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def __init__(self, hostname, ssl_context=None):
try:
socket.gethostbyname(hostname.split(':')[0])
except socket.gaierror:
raise RuntimeError("Unable to resolve hostname :" + hostname)
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if ssl_context is None:
self.conn = HTTPConnection(hostname, timeout=30)
else:
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self.conn = HTTPSConnection(hostname, context=ssl_context, timeout=30)
try:
print("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):
try:
self.conn.request("POST", path, tobytes(data), self.headers)
response = self.conn.getresponse()
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))
def send_data(self, ep_name, data):
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return self._send_post_request('/' + ep_name, data)