How to make HTTPS requests

[lebucur]

Hello, is there a way to make HTTPS requests?
I have tried many different ways, but even wrapping a SSL socket generated errors. I am really confused right now.. I have LoPy with the latest firmware (1.6.13.b1).

[danielm]

Does it work reliably if repeated for hundreds of requests? Properly raised exceptions are acceptable in my opinion.

[lebucur]

I want to share with you the code that worked for me afterall:

=========================================================================

import socket, ssl

server = ('192.168.0.105', 25566)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) #def socket.IPPROTO_TCP
sslsock = ssl.wrap_socket(sock)
sslsock.connect(server)
sslsock.send('GET /ping HTTP/1.0\r\n\r\n')
print(sslsock.recv(200))
sslsock.close() #automatically closes underlying socket

==============================================

import urequests

url = 'https://192.168.0.105:25566/ping'
resp = urequests.request('GET', url)
print(resp.content)

===============================================

import urequests

url = 'https://192.168.0.105:25566/register'
headers = {'content-type': 'application/json'}
data = {'email':'email@gmail.com', 'password':'password', 'fullName':'My Name'}

resp = urequests.request('POST', url, json=data, headers=headers)
print(resp.content)

======================================================================

I still get OSERROR or EHOSTUNREACH from time to time, especially when I try to make these requests one after another. My guess is that there are some resources that are not freed when closing the socket.

[danielm]

I hope that the issue will be fixed soon, however it is fully in hands of Pycom team or maybe something will have to be fixed by Espressif in esp-idf.

You could try to write your own library which will compile requests and parse responses, however if the issue is caused e.g. by ssl.wrap_socket() you will face similar behavior.

[lebucur]

Thanks,

Will these be implemented officially in the near future? What alternatives do I have?
I guess I could do well with TCP + separate encryption, right?

[danielm]

I could do POST over HTTPS using urequests.py library, however it is unstable/unreliable:

https://forum.pycom.io/topic/1061/https-post-using-urequests-py-and-guru-mediation-error/

It works good enough for doing experiments but not for long-running applications.

[Innocenzo]

@lebucur SSL should work if the WiPY (LoPy) is the client. The problem with ssl.wrap_socket() arises when the WiPy (LoPy) is the Server Side. Try also to use the urequests.py lib.