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I have an express js server running on port 3000 and 4000 and want to send a post request from server 3000 to server 4000

I tried this:

var post_options = {
  url: "http://172.28.49.9:4000/quizResponse",
  timeout: 20000,
  method:"POST",
  encoding: "application/json; charset=utf-8",
  body :  {data: formdata}
};
request(post_options,
function optionalCallback(err, httpResponse, body) {
    if (err) {
        console.log(err);
    }else
        console.log(body);
});

But getting this error:

TypeError: First argument must be a string or Buffer at ClientRequest.OutgoingMessage.write (_http_outgoing.js:456:11) at Request.write (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:1514:27) at end (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:552:18) at Immediate. (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:581:7) at runCallback (timers.js:637:20) at tryOnImmediate (timers.js:610:5) at processImmediate [as _immediateCallback] (timers.js:582:5)

This is not working as I thought. Please help me to solve this issue.

I have an express js server running on port 3000 and 4000 and want to send a post request from server 3000 to server 4000

I tried this:

var post_options = {
  url: "http://172.28.49.9:4000/quizResponse",
  timeout: 20000,
  method:"POST",
  encoding: "application/json; charset=utf-8",
  body :  {data: formdata}
};
request(post_options,
function optionalCallback(err, httpResponse, body) {
    if (err) {
        console.log(err);
    }else
        console.log(body);
});

But getting this error:

TypeError: First argument must be a string or Buffer at ClientRequest.OutgoingMessage.write (_http_outgoing.js:456:11) at Request.write (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:1514:27) at end (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:552:18) at Immediate. (D:\restfullApi\examineerapi\node_modules\request\request.js‌​:581:7) at runCallback (timers.js:637:20) at tryOnImmediate (timers.js:610:5) at processImmediate [as _immediateCallback] (timers.js:582:5)

This is not working as I thought. Please help me to solve this issue.

• javascript
• node.js
• express

Share Improve this question Follow edited Sep 1, 2017 at 10:54 Raghav Garg 3,70722 gold badges2525 silver badges3333 bronze badges asked Sep 1, 2017 at 9:30 abhimanyuabhimanyu 15511 gold badge33 silver badges1313 bronze badges 5

• 1 please add the error you are getting, upon executing the above code? – Raghav Garg Commented Sep 1, 2017 at 9:36
• TypeError: First argument must be a string or Buffer at ClientRequest.OutgoingMessage.write (_http_outgoing.js:456:11) at Request.write (D:\restfullApi\examineerapi\node_modules\request\request.js:1514:27) at end (D:\restfullApi\examineerapi\node_modules\request\request.js:552:18) at Immediate.<anonymous> (D:\restfullApi\examineerapi\node_modules\request\request.js:581:7) at runCallback (timers.js:637:20) at tryOnImmediate (timers.js:610:5) at processImmediate [as _immediateCallback] (timers.js:582:5) – abhimanyu Commented Sep 1, 2017 at 9:38
• Possible duplicate of How to make an HTTP POST request in node.js? – Spitzbueb Commented Sep 1, 2017 at 9:39
• for body, to be json you must set json: true in the request package. Please try with adding json: true in your options. – Raghav Garg Commented Sep 1, 2017 at 9:47
• Axios could also do the trick : github./mzabriskie/axios – NeoPix Commented Sep 1, 2017 at 9:50

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1 Answer 1

Sorted by: Reset to default 6

There is a native Node module called http which you can use in your case. It would look like this:

const http = require('http');

var postData = JSON.stringify({user: 'sample1'});

const options = {
    hostname: '172.28.49.9',
    port: 4000,
    path: '/quizResponse',
    method: 'POST',
    headers: {
        'content-type': 'application/json',
        'accept': 'application/json'
    }
};

const req = http.request(options, (res) => {
    res.setEncoding('utf8');
    res.on('data', (chunk) => {
        console.log(`BODY: ${chunk}`);
    });
    res.on('end', () => {
        console.log('No more data in response.');
    });
});

req.on('error', (e) => {
    console.error(`problem with request: ${e.message}`);
});

// write data to request body
req.write(postData);
req.end();

I suggest you read the docs: https://nodejs/api/http.html#http_http_request_options_callback

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