Sending multiple sms in quick succession using Twilio

Question

I am trying to send sms using twilio and django 1.8.2. I am facing a problem when there are multiple calls to send sms within the same function.

This is the code snippet to send an sms to any particular phone number:

def send_twilio_message(to_number, body):
    client = twilio.rest.TwilioRestClient(
        settings.TWILIO_ACCOUNT_SID, settings.TWILIO_AUTH_TOKEN)
    return client.messages.create(
        body=body,
        to=to_number,
        from_=settings.TWILIO_PHONE_NUMBER
    )

When I make two requests to this function like this:

def some_function():
    send_twilio_message(number1, "text 1")
    send_twilio_message(number2, "text 2")

I am getting this error:

Traceback:
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/django/core/handlers/base.py" in get_response
132. response = wrapped_callback(request, *callback_args, 
**callback_kwargs)
File "/home/arka/Project/TreadWill/dreamhost/CCBT/trial_IITK/views.py" 
in waitlist_phq
  782.             exclusion_code = waitlist_alert(wl.participant, 
phq_score)
File "/home/arka/Project/TreadWill/dreamhost/CCBT/trial_IITK/views.py" 
in waitlist_alert
  857.             send_twilio_message(phonenumber, 'Looks like your 
child maybe having suicidal thoughts. Get in touch with your child 
ASAP. - TreadWill.')
File "/home/arka/Project/TreadWill/dreamhost/CCBT/sendsms/utils.py" in 
send_twilio_message
  13.         from_=settings.TWILIO_PHONE_NUMBER
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/twilio/rest/resources/messages.py" in create
  122. return self.create_instance(kwargs)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/twilio/rest/resources/base.py" in create_instance
  365. data=transform_params(body))
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/twilio/rest/resources/base.py" in request
  200. resp = make_twilio_request(method, uri, auth=self.auth, 
**kwargs)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/twilio/rest/resources/base.py" in make_twilio_request
  152. resp = make_request(method, uri, **kwargs)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/twilio/rest/resources/base.py" in make_request
  117. resp, content = http.request(url, method, headers=headers, 
body=data)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/httplib2/__init__.py" in request
  1314. (response, content) = self._request(conn, authority, uri, 
request_uri, method, body, headers, redirections, cachekey)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-
packages/httplib2/__init__.py" in _request
  1064. (response, content) = self._conn_request(conn, request_uri,         
method, body, headers)
File "/home/arka/Project/TreadWill/env/lib/python3.5/site-    
packages/httplib2/__init__.py" in _conn_request
  987. conn.connect()
File "/usr/lib/python3.5/http/client.py" in connect
  1260. server_hostname=server_hostname)
File "/usr/lib/python3.5/ssl.py" in wrap_socket
  377. _context=self)
File "/usr/lib/python3.5/ssl.py" in __init__
  752. self.do_handshake()
File "/usr/lib/python3.5/ssl.py" in do_handshake
  988. self._sslobj.do_handshake()
File "/usr/lib/python3.5/ssl.py" in do_handshake
  633. self._sslobj.do_handshake()

Exception Type: SSLError at     
/iitk/phq/NnBLRUEsbm5jbERmfGZWNkt6RVNPcEFBNnplNkA4RVFOTkN4TnI=/
Exception Value: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify 
failed (_ssl.c:645)

But, when I do this:

import time
def some_function():
    send_twilio_message(number1, "text 1")
    time.sleep(60)
    send_twilio_message(number2, "text 2")

it is working fine. The problem with this approach is that the user might close the browser if the page keeps loading for 60 seconds (I've tried for less than 60 seconds, I get the same error).

I've tried disabling SSL verification in my Twilio account, but that didn't work.

I've looked into other answers, and I've gone through Twilio's documentation. I haven't been able to figure out a good solution. Any help will be appreciated.

Edit: I was trying all this on my localserver. When I tried the code:

def some_function():
    send_twilio_message(number1, "text 1")
    send_twilio_message(number2, "text 2")

on a hosted server, it worked fine. So, I think the problem might be due to my institute's network. The problem is resolved for me, but I still haven't been able to figure out why I was facing the issue. If anyone has any idea why this might be happening, please post your answer.

Sending multiple sms in quick succession using Twilio

0 Answers0