Trouble with Tuya API POST request returning code 1004 or sign invalid

[mark_libres]

I'm working on integrating the Tuya API into my Python application to control smart devices. I'm able to successfully make GET requests, but I'm encountering issues when trying to make POST requests.

Whenever I attempt to send a POST request to the Tuya API, I consistently receive either a code 1004 error or a "sign invalid" message. I've verified that my client ID and client secret are correct, and my GET requests are working fine.

here is my Request class file

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import time
import hashlib
import hmac
import requests
import subprocess

class Request:

def __init__(self):

    self.ClientID = "**"
    self.ClientSecret = "**"
    self.BaseUrl = "https://openapi.tuyaus.com"
    self.EmptyBodyEncoded = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"


def headers(self, sign):
    
    return {
        "sign_method": "HMAC-SHA256",
        "client_id": self.ClientID,
        "t": self.tuyatime(),
        "mode": "cors",
        "Content-Type": "application/json",
        "sign": sign
    }



def tuyatime(self):
    return str(int(time.time() * 1000))


def access_token(self):
    URL = "/v1.0/token?grant_type=1"
    StringToSign = f"{self.ClientID}{self.tuyatime()}GET\n{self.EmptyBodyEncoded}\n\n{URL}"
    AccessTokenSign = hmac.new(self.ClientSecret.encode(), StringToSign.encode(), hashlib.sha256).hexdigest().upper()

    AccessTokenResponse = requests.get(f"{self.BaseUrl}{URL}", headers=self.headers(AccessTokenSign))
    return AccessTokenResponse.json()['result']["access_token"]

    pass


def sign(self, url, method):

    access_token = self.access_token()
    str_sign = f"{self.ClientID}{access_token}{self.tuyatime()}{method}\n{self.EmptyBodyEncoded}\n\n{url}"
    
    return [
        hmac.new(self.ClientSecret.encode(), str_sign.encode(), hashlib.sha256).hexdigest().upper(),
        access_token
    ]



def _sign(self, url, method, data):

    # Define the body

    print("data >> ", data)
    access_token = self.access_token()
    encoded_body = self.EmptyBodyEncoded
    
    if data != None:
        body_str = str(data).encode('utf-8')
        encoded_body = hashlib.sha256(body_str).hexdigest()


    print("encoded_body >> ", encoded_body)
    
    stringToSign = "\n".join([
        method, #HTTPMethod
        encoded_body, #Content-SHA256
        "", #Optional_Signature_key
        url #URL
    ])


    str_sign = f"{self.ClientID}{access_token}{self.tuyatime()}{stringToSign}"

    
    return [
        hmac.new(self.ClientSecret.encode(), str_sign.encode(), hashlib.sha256).hexdigest().upper(),
        access_token
    ]


def request_extra_params(self, url, method, data):

    sign, access_token = self._sign(url, method, data)

    headers = self.headers(sign)
    headers["access_token"] = access_token

    return {
        "headers" : headers
    }

    pass

def get(self, url, **kwargs):
    extra_params = self.request_extra_params(url, "GET", None)
    return requests.get(f"{self.BaseUrl}{url}", **extra_params, **kwargs)

def post(self, url, data, **kwargs):

    extra_params = self.request_extra_params(url, "POST", data)
    return requests.post(f"{self.BaseUrl}{url}", json=data, **extra_params, **kwargs)
    

    
 

here is the common file

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from classes.Request import Request
import json

_request = Request()

DEVICES = {
    "mark_table" : "***"
}


def set_state_mark_table(value = True):
    URL = f"/v1.0/devices/{DEVICES['mark_table']}/commands"
    return _request.post(URL, data=json.dumps({
        "commands" : [{"code":"switch_1","value":value}]
    }))
 	

her is the file to trigger the common file and Request class

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import common

value = common.set_state_mark_table(False)
print(value.text)

[JamesG]

You can first take a look at this article: https://developer.tuya.com/en/docs/iot/ ... 0q34cs2e5g.

Check your program and if there are still issues, please provide feedback on the forum.