I got error Recipient address required with Gmail API - node.js

Question

I want to send an email with Gmail API.
Document say Gmail API require RFC2822 formatted and base64 encoded string.
So I write email contents and pass it to raw property.
But I got error: Recipient address required.
How can I fix this?
Here is my code.
const fs = require('fs');
const readline = require('readline');
const {google} = require('googleapis');
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/gmail.send'];
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
const TOKEN_PATH = 'token.json';
// Load client secrets from a local file.
fs.readFile('credentials.json', (err, content) => {
if (err) return console.log('Error loading client secret file:', err);
// Authorize a client with credentials, then call the Gmail API.
authorize(JSON.parse(content), sendGmail);
});
/**
* Create an OAuth2 client with the given credentials, and then execute the
* given callback function.
* #param {Object} credentials The authorization client credentials.
* #param {function} callback The callback to call with the authorized client.
*/
function authorize(credentials, callback) {
const {client_secret, client_id, redirect_uris} = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(
client_id, client_secret, redirect_uris[0]);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, (err, token) => {
if (err) return getNewToken(oAuth2Client, callback);
oAuth2Client.setCredentials(JSON.parse(token));
callback(oAuth2Client);
});
}
/**
* Get and store new token after prompting for user authorization, and then
* execute the given callback with the authorized OAuth2 client.
* #param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
* #param {getEventsCallback} callback The callback for the authorized client.
*/
function getNewToken(oAuth2Client, callback) {
const authUrl = oAuth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
});
console.log('Authorize this app by visiting this url:', authUrl);
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
rl.question('Enter the code from that page here: ', (code) => {
rl.close();
oAuth2Client.getToken(code, (err, token) => {
if (err) return console.error('Error retrieving access token', err);
oAuth2Client.setCredentials(token);
// Store the token to disk for later program executions
fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
if (err) return console.error(err);
console.log('Token stored to', TOKEN_PATH);
});
callback(oAuth2Client);
});
});
}
function sendGmail(auth){
const makeBody = (params) => {
params.subject = new Buffer.from(params.subject).toString("base64");
const str = [
'Content-Type: text/plain; charset=\"UTF-8\"\n',
'MINE-Version: 1.0\n',
'Content-Transfer-Encoding: 7bit\n',
`to: ${params.to} \n`,
`from: ${params.from} \n`,
`subject: =?UTF-8?B?${params.subject}?= \n\n`,
params.message
].join(' ');
return new Buffer.from(str).toString('base64').replace(/\+/g,'-').replace(/\//g,'_');
}
const messageBody = `
this is a test message
`;
const raw = makeBody({
to : 'foo#gmail.com',
from : 'foo#gmail.com',
subject : 'test title',
message:messageBody
});
jj
const gmail = google.gmail({version:'v1',auth:auth});
gmail.users.messages.send({
userId:"me",
resource:{
raw:raw
}
}).then(res => {
console.log(res);
});
}
resulr:
Error: Recipient address required
edit : show whole code. This code still get the same error.
This is almost Google's sample and I think bug is in my code.
I add sendGnail method and edit authorize(JSON.parse(content), listLabels); to authorize(JSON.parse(content), sendGmail); ,change SCOPES ,and delete listLabels method.
(listLabels method worked fine.)
After execute listLabels method, I change SCOPES and re-create token.json.
After get Labels, I change
Here is sample
https://developers.google.com/gmail/api/quickstart/nodejs?hl=ja

Answer 1

How about this modification?
From:
].join(' ');
To:
].join('');
Note:
I think that the script will work by above modification. But as one more modification point, how about modifying from 'Content-Type: text/plain; charaset=\"UTF-8\"\n', to 'Content-Type: text/plain; charset=\"UTF-8\"\n',?
If this was not the direct solution, I apologize.
Edit:
I modified the function of sendGmail in your script.
Modified script:
function sendGmail(auth) {
const makeBody = params => {
params.subject = new Buffer.from(params.subject).toString("base64");
const str = [
'Content-Type: text/plain; charset="UTF-8"\n',
"MINE-Version: 1.0\n",
"Content-Transfer-Encoding: 7bit\n",
`to: ${params.to} \n`,
`from: ${params.from} \n`,
`subject: =?UTF-8?B?${params.subject}?= \n\n`,
params.message
].join(""); // <--- Modified
return new Buffer.from(str)
.toString("base64")
.replace(/\+/g, "-")
.replace(/\//g, "_");
};
const messageBody = `
this is a test message
`;
const raw = makeBody({
to: "foo#gmail.com",
from: "foo#gmail.com",
subject: "test title",
message: messageBody
});
const gmail = google.gmail({ version: "v1", auth: auth });
gmail.users.messages.send(
{
userId: "me",
resource: {
raw: raw
}
},
(err, res) => { // Modified
if (err) {
console.log(err);
return;
}
console.log(res.data);
}
);
}