agora start method error : post method api body check failed

Question

I'm building a video-calling app using Next js and agora.io 4, I followed the steps mentioned in the Docs.

• I enabled agora cloud recording
• called the acquire method and got the resourceId.
• Then, I called the start method. but it always failed with an error post method API body check failed!

However, it works perfectly on Postman.

Here's the code :

import axios from "axios";
import chalk from "chalk";

// AWS S3 storage bucket credentials
const secretKey = process.env.S3_SECRET_KEY;
const accessKey = process.env.S3_ACCESS_KEY;
const bucket = process.env.S3_BUCKET_NAME;
const region = process.env.S3_BUCKET_REGION;
const vendor = process.env.S3_VENDOR;

//agora credentials
const appId = process.env.APP_ID;
const key = process.env.KEY;
const secret = process.env.SECRET;

export default async function startHandler(req, res) {
    //call agora start method
    const { uid, cname, resourceId, token } = req.body;

    const plainCredential = `${key}:${secret}`;
    const encodedCredential = Buffer.from(plainCredential).toString("base64"); // Encode with base64
    const authorizationField = `Basic ${encodedCredential}`;

    const data = {
        uid,
        cname,
        clientRequest: {
            recordingConfig: {
                streamMode: "standard",
                channelType: 0,
                subscribeUidGroup: 0,
            },
            storageConfig: {
                accessKey,
                region,
                bucket,
                secretKey,
                vendor,
            },
        },
    };
    const headers = {
        "Content-Type": "application/json",
        Authorization: authorizationField,
    };
   
    const startUrl = `https://api.agora.io/v1/apps/${appId}/cloud_recording/resourceid/${resourceId}/mode/individual/start`;
    
    try {
        const response = await axios.post(startUrl, data, {
            headers,
        });

        res.status(200).send(response.data);
    } catch (error) {
        console.error(error);
        res.send(error);
    }
}

Any help/hint would be much appreciated

Answer 1

I found the fix!

• First, you may be tricked by the uid returned from the agora join method, it's returning a Number, surprisingly! the start method expect the uid to be a string, so don't forget to do a uid.toString().
• In the storageConfig object, you should check the type of each of its attributes. each of region and vendor is expected to be of type Number. That said, if you're storing this info in a .env file, remember that environment files only stores strings. Therefore, you should convert them to Numbers!

This problem took me 2 days, so I hope this will be useful for you!