I'm making a Parse.Cloud.httpRequest using the POST method to retrieve a token from an API in a Back4App Cloud Code Function called 'retrieveToken'.
Parse.Cloud.define("retrieveToken", async(request) => {
Parse.Cloud.httpRequest({
method: 'POST',
url: 'https://.......',
headers: {
'Content-Type': 'application/json;charset=utf-8'
},
body: {
"auth": {
"identity": {
"methods": [
"password"
],
"password": {
"user": {
"name": "...",
"password": "...",
"domain": {
"name": "..."
}
}
}
},
"scope": {
"project": {
"id": "..."
}
}
}
}
}).then(function(httpResponse) {
console.log('Token retrieved successfully, Status Code: ', httpResponse.status, ',\n', httpResponse.text);
}, function(httpResponse) {
console.error('Failed to retrieve token, retrieveToken: ', httpResponse.status, ',\n', httpResponse.text);
});
});
It works fine if I delete "project": {"id": "..."} from the 'scope' of the body JSON of the httpRequest.
However, it returns me 'undefined' if I don't delete that chunk of code.
I have to keep that chunk of code there because the API will return me a project-level token only if I specify the project id. Otherwise, I will get a global-level token, which cannot be used for my case.
The API works perfectly with/without the project id specified in Postman.
I have already stuck here for a whole day and still can't figure it out. Where am I doing wrong and how can I get the correct response from Parse.Cloud.httpRequest with the project id specified?
I found the content-length for the responses are quite different with/without the project id specified using Postman.
'content-length' = 6752 Bytes without the project id specified
'content-length' = 16896 Bytes with the project id specified
By any chance the 'undefined' was caused by the response size limit? If this is the reason, how can I get the correct response? Can I receive the header only?
Part of the problem happens because you are not returning the http response. Try this:
Parse.Cloud.define("retrieveToken", (request) => {
return Parse.Cloud.httpRequest({
method: 'POST',
url: 'https://.......',
headers: {
'Content-Type': 'application/json;charset=utf-8'
},
body: {
"auth": {
"identity": {
"methods": [
"password"
],
"password": {
"user": {
"name": "...",
"password": "...",
"domain": {
"name": "..."
}
}
}
},
"scope": {
"project": {
"id": "..."
}
}
}
}
}).then(function(httpResponse) {
console.log('Token retrieved successfully, Status Code: ', httpResponse.status, ',\n', httpResponse.text);
return httpResponse;
}, function(httpResponse) {
console.error('Failed to retrieve token, retrieveToken: ', httpResponse.status, ',\n', httpResponse.text);
return httpResponse;
});
});
This issue was resolved by adding an environment variable to my Back4App server.
NODE_OPTIONS="--max-http-header-size=16384"
I knew the exact problem (header overflow) by using the code below:
Parse.Cloud.define("retrieveToken", async(request) => {
return Parse.Cloud.httpRequest({
method: 'POST',
url: 'https://.......',
headers: {
'Content-Type': 'application/json;charset=utf-8'
},
body: {
"auth": {
"identity": {
"methods": [
"password"
],
"password": {
"user": {
"name": "...",
"password": "...",
"domain": {
"name": "..."
}
}
}
},
"scope": {
"project": {
"id": "..."
}
}
}
}
});
});
Only the code above returned me the error below, and all other code returned me 'undefined':
[Error]: Parse Error: Header overflow (Code: 141, Version: 1.19.2)
FYI: I'm calling this API
https://iam.ap-southeast-1.myhuaweicloud.com/v3/auth/tokens