React native fetch() 403 status - reactjs

Question

I have an API endpoint working good in postman with the bellow options
The above request can get 200 status and got a response. Now I am trying to implement the same API with React Native using fetch method.
fetch('https://example.com/api/user/login', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Token':'xxxxxx-xxxx-xxxx-xxxx-xxxxx'
},
body: {
"useremail": "testuser#example.com",
"userpassword": "123456"
},
})
.then((response) => response.json())
.then((responseJson) => {
console.log(responseJson);
}).catch((error) =>{
console.error(error);
});
The above code was not working and I am getting 403 status.

Answer 1

Have you tried this
The easy way to implement this is to use this attribute to your AndroidManifest.xml where you allow all http for all requests:
android:usesCleartextTraffic="true"
feel free for doubts

Answer 2

You are passing data without converting it to json will make problem here
fetch('https://example.com/api/user/login', {
method: 'POST',
credentials : 'include',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json',
'token':'xxxxxx-xxxx-xxxx-xxxx-xxxxx',
},
body: JSON.stringify({ // convert object to json
"useremail": "testuser#example.com",
"userpassword": "123456"
}) ,
})
.then((response) => response.json())
.then((responseJson) => {
console.log(responseJson);
}).catch((error) =>{
console.error(error);
});

Answer 3

HTTP 403 is a standard HTTP status code communicated to clients by an HTTP server to indicate that access to the requested (valid) URL by the client is Forbidden for some reason. The server understood the request, but will not fulfill it due to client related issues.
so for first step in your postman use a fake user password to see if you get 403 again ,
if you got, that means you have problem in your sending your react native data.
so you should focus on your sending request code then,
According to docs
you can post like this
fetch('https://mywebsite.com/endpoint/', {
method: 'POST',
headers: {
Accept: 'application/json',
'Content-Type': 'application/json',
},
body: JSON.stringify({
firstParam: 'yourValue',
secondParam: 'yourOtherValue',
}),
});
be sure that you are sending your user pass correctly and not missing anything like misspellings
hope this helps you.