MikeNQ MikeNQ - 3 months ago 8
Node.js Question

nodejs http post request throws TypeError

I am trying to make a simple server that use google oauth (without express and passportjs, as I want to study the data exchanged).

When my program attempts to send a post request to google, nodejs throws:

http.js:593 throw new TypeError('first argument must be a string or Buffer');


I have checked and make sure that all parameters in query and option are all string, but the error still persist. What could I have missed here?

Here is my code:

// Load the http module to create an http server.
var http = require('http');
var url = require('url');
var fs = require('fs');
var querystring = require('querystring');
var content;

fs.readFile('./test.html',function(err,data){
content = data;
});

// Configure our HTTP server to respond with Hello World to all requests.
var server = http.createServer(function (request, response) {
response.writeHead(200, {"Content-Type": "text/html"});
var path = url.parse(request.url).pathname;
var query = querystring.parse(url.parse(request.url).query);
var code;
if (query!=null) {
code = query.code;
};

if ('/auth/google/callback'==path){

var data = querystring.stringify({
'code': ''+code,
'client_id': 'id',
'client_secret': 'secret',
'redirect_uri': 'http://localhost:8999/auth/google/code/callback',
'grant_type': 'authorization_code'
});

var options = {
hostname: 'accounts.google.com',
port:'80',
path: '/o/oauth2/token',
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'Content-Length': ''+data.length
}
};

debugger;
var post = http.request(options, function(res){
response.write(res);
response.end();
});
debugger;
post.write(data);
debugger;
post.end();
}

else if (path=='/auth/google/code/callback'){
console.log(request.headers);
console.log(request.url);
}

else response.end(content);

console.log(request.headers);
console.log(request.url);
});

// Listen on port 8000, IP defaults to 127.0.0.1
server.listen(8999);

// Put a friendly message on the terminal
console.log("Server running at http://127.0.0.1:8000/");


Many thanks,

Answer

I think problem is when you are saying

response.write(res); //it needs a string

I think res is a object here.

try

response.write(JSON.stringify(res));