[cloud_functions]: No way to define headers like 'Content-Type': 'application/json', to send a POST request about flutterfire

[russellwheatley]

Hi @uhbsksingh - one way to help us help you would be to try debugging on the cloud functions emulator.

What to do:

1. Ensure it throws exception on emulator
2. Narrow down what is causing the bug by removing a couple of properties at a time (presumably you will have to match it on the emulator and redeploy).
3. At some point, it will be successful and you will be able to narrow down what property is causing the exception. That way, we can figure out if the bug is a FlutterFire issue, firebase-ios-sdk or perhaps a misconfiguration.

Let me know how it goes 🙏

[uhbsksingh]

Hi @russellwheatley, the function works in the emulator. I sent the request using Postman to the emulator.

As for the properties, I sent the same JSON object I sent using Postman in callable.call. I get an exception like this

flutter: error.code: unknown
flutter: error.details: {}
flutter: error.message: An error occurred

The JSON object sent in the following code is the same one I sent on the body of the request sent using Postman to the emulator. The request runs successfully in the emulator but the same JSON object is not working when I send from my Flutter app to the deployed function. This is my call from Flutter to the deployed function.

final response = await callable.call({
        "data": {
          "activeCollectionId": "cYcoK45wFyBradLyQbhU",
          "action": {
            "action": "Add allocated purchase",
            "user": {
              "appUserId": "Hj9OD16vUuQVM1rDh30iIdcKCfk2",
              "fName": "Abhishek",
              "lName": "Singh",
              "imagePath": "mh_img_user/aa1692187748018"
            },
            "note": null
          },
          "purchaseBillList": [
            {
              "billID": "test-6102024-1",
              "reference": 1,
              "partner": {
                "partnerId": "test",
                "name": "test",
                "imagePath": null
              },
              "info": {
                "billDateTime":
                    "Timestamp(seconds=1718005730, nanoseconds=349154000)",
                "dueDateTime":
                    "Timestamp(seconds=1718005730, nanoseconds=349154000)",
                "dateTime":
                    "Timestamp(seconds=1718005730, nanoseconds=349154000)",
                "currency": "NPR",
                "action": {
                  "action": "Add allocated purchase",
                  "user": {
                    "appUserId": "Hj9OD16vUuQVM1rDh30iIdcKCfk2",
                    "fName": "Abhishek",
                    "lName": "Singh",
                    "imagePath": "mh_img_user/aa1692187748018"
                  },
                  "note": null
                },
                "paymentTerm": null,
                "attachments": null,
                "tags": null
              },
              "item": {
                "itemId": "d2mFoM7U0VEVESSEosIu",
                "name": "test",
                "unit": {
                  "unitId": "pieces",
                  "abbreviation": "pcs",
                  "allowDecimal": false
                },
                "imagePaths": null
              },
              "quantity": 1.0,
              "rate": 2200.0,
              "tax": {}
            }
          ],
          "transferEntityDocumentID": "9INPot7vBE4qwtFbEhkY",
          "appliedQuantity": 1.0,
          "billItemImageMap": {"d2mFoM7U0VEVESSEosIu": null}
        }
      });

Is there any other way I can decode the error?

[russellwheatley]

This is why I asked you to remove properties from the JSON object input (and removing use in emulated function) to see what is causing the exception. There might be an issue with properties being parsed. Might want to start with:

"billDateTime":
    "Timestamp(seconds=1718005730, nanoseconds=349154000)",
"dueDateTime":
    "Timestamp(seconds=1718005730, nanoseconds=349154000)",
"dateTime":
    "Timestamp(seconds=1718005730, nanoseconds=349154000)",

Keep on removing properties until it works, then you will know which properties are causing the exception as they will be the ones you last removed.

[russellwheatley]

I just noticed this in your cloud function:

      } catch (exception) {
        throw new HttpsError("unknown", "An error occurred", exception);
      }

why don't you wrap this around the entirety of the cloud function code within the function? This is exactly the exception you're getting in your flutter code by the way.

[google-oss-bot]

Hey @uhbsksingh. We need more information to resolve this issue but there hasn't been an update in 7 weekdays. I'm marking the issue as stale and if there are no new updates in the next 7 days I will close it automatically.

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