title: How to call a REST end point using Airflow DAG
body: <p>I'm new to Apache Airflow. I want to call a REST end point using DAG.
  REST end point for example </p>
  
  <pre><code>@PostMapping(path = "/api/employees", consumes = "application/json")
  </code></pre>
  
  <p>Now I want to call this rest end point using Airflow DAG, and schedule it. What I'm doing is using SimpleHttpOperator to call the Rest end point.</p>
  
  <pre><code>t1 = SimpleHttpOperator(
  task_id='post_op',
  endpoint='http://localhost:8084/api/employees',
  data=json.dumps({"department": "Digital","id": 102,"name": "Rakesh","salary": 80000}),
  headers={"Content-Type": "application/json"},
  dag=dag,)
  </code></pre>
  
  <p>When I trigger the DAG the task is getting failed</p>
  
  <pre><code>[2019-12-30 09:09:06,330] {{taskinstance.py:862}} INFO - Executing &lt;Task(SimpleHttpOperator): 
  post_op&gt; on 2019-12-30T08:57:00.674386+00:00
  [2019-12-30 09:09:06,331] {{base_task_runner.py:133}} INFO - Running: ['airflow', 'run', 
  'example_http_operator', 'post_op', '2019-12-30T08:57:00.674386+00:00', '--job_id', '6', '--pool', 
  'default_pool', '--raw', '-sd', 'DAGS_FOLDER/ExampleHttpOperator.py', '--cfg_path', 
  '/tmp/tmpf9t6kzxb']
  [2019-12-30 09:09:07,446] {{base_task_runner.py:115}} INFO - Job 6: Subtask post_op [2019-12-30 
  09:09:07,445] {{__init__.py:51}} INFO - Using executor SequentialExecutor
  [2019-12-30 09:09:07,446] {{base_task_runner.py:115}} INFO - Job 6: Subtask post_op [2019-12-30 
  09:09:07,446] {{dagbag.py:92}} INFO - Filling up the DagBag from 
  /usr/local/airflow/dags/ExampleHttpOperator.py
  [2019-12-30 09:09:07,473] {{base_task_runner.py:115}} INFO - Job 6: Subtask post_op [2019-12-30 
  09:09:07,472] {{cli.py:545}} INFO - Running &lt;TaskInstance: example_http_operator.post_op 2019-12- 
  30T08:57:00.674386+00:00 [running]&gt; on host 855dbc2ce3a3
  [2019-12-30 09:09:07,480] {{http_operator.py:87}} INFO - Calling HTTP method
  [2019-12-30 09:09:07,483] {{logging_mixin.py:112}} INFO - [2019-12-30 09:09:07,483] 
  {{base_hook.py:84}} INFO - Using connection to: id: http_default. Host: https://www.google.com/, 
  Port: None, Schema: None, Login: None, Password: None, extra: {}
  [2019-12-30 09:09:07,484] {{logging_mixin.py:112}} INFO - [2019-12-30 09:09:07,484] 
  {{http_hook.py:131}} INFO - Sending 'POST' to url: 
  https://www.google.com/http://localhost:8084/api/employees
  [2019-12-30 09:09:07,501] {{logging_mixin.py:112}} INFO - [2019-12-30 09:09:07,501] 
  {{http_hook.py:181}} WARNING - HTTPSConnectionPool(host='www.google.com', port=443): Max retries 
  exceeded with url: /http://localhost:8084/api/employees (Caused by SSLError(SSLError("bad handshake: 
  SysCallError(-1, 'Unexpected EOF')"))) Tenacity will retry to execute the operation
  [2019-12-30 09:09:07,501] {{taskinstance.py:1058}} ERROR - 
  HTTPSConnectionPool(host='www.google.com', port=443): Max retries exceeded with url: 
  /http://localhost:8084/api/employees (Caused by SSLError(SSLError("bad handshake: SysCallError(-1, 
  'Unexpected EOF')")))
  Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/urllib3/contrib/pyopenssl.py", line 485, in wrap_socket
  cnx.do_handshake()
  File "/usr/local/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1934, in do_handshake
  self._raise_ssl_error(self._ssl, result)
  File "/usr/local/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1664, in _raise_ssl_error
  raise SysCallError(-1, "Unexpected EOF")
  OpenSSL.SSL.SysCallError: (-1, 'Unexpected EOF')
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 672, in urlopen
  chunked=chunked,
  File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 376, in _make_request
  self._validate_conn(conn)
  File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 994, in _validate_conn
  conn.connect()
  File "/usr/local/lib/python3.7/site-packages/urllib3/connection.py", line 394, in connect
  ssl_context=context,
  File "/usr/local/lib/python3.7/site-packages/urllib3/util/ssl_.py", line 370, in ssl_wrap_socket
  return context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/local/lib/python3.7/site-packages/urllib3/contrib/pyopenssl.py", line 491, in wrap_socket
  raise ssl.SSLError("bad handshake: %r" % e)
  ssl.SSLError: ("bad handshake: SysCallError(-1, 'Unexpected EOF')",)
  </code></pre>
  
  <p>Airflow is running on Docker and the docker image is <strong>puckel/docker-airflow</strong>. 
  Why it is calling the host <strong>http_default. Host: <a href="https://www.google.com/" rel="noreferrer">https://www.google.com/</a></strong></p>