Category: send

how to send information from javascript to flask route


#python route
@app.route('/this-route', methods=['GET', 'POST']):
def thisRoute():
    information = request.data
    return "1"
​
#javascript
const URL = '/get-coordinates'
const xhr = new XMLHttpRequest();
sender = JSON.stringify([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
xhr.open('POST', URL);
xhr.send(sender);

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How to send JSON Web Token (JWT Token) as header with Postman and golang


func ProtectedEndpoint(w http.ResponseWriter, req *http.Request) {
    params := req.URL.Query()
    token, _ := jwt.Parse(params["token"][0], func(token *jwt.Token) (interface{}, error) {
        if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
            return nil, fmt.Errorf("There was an error")
        }
        return []byte("secret"), nil
    })
    if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
        var user User
        mapstructure.Decode(claims, &user)
        json.NewEncoder(w).Encode(user)
    } else {
        json.NewEncoder(w).Encode(Exception{Message: "Invalid authorization token"})
    }
}
​

func CreateTokenEndpoint(w http.ResponseWriter, req *http.Request) {
    var user User
    _ = json.NewDecoder(req.Body).Decode(&user)
    token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
        "username": user.Username,
    })
    tokenString, error := token.SignedString([]byte("secret"))
    if error != nil {
        fmt.Println(error)
    }
    json.NewEncoder(w).Encode(JwtToken{Token: tokenString})
}
​

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how to send mail node.js


var nodemailer = require('nodemailer');
​
var transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: 'youremail@gmail.com',
    pass: 'yourpassword'
  }
});
​
var mailOptions = {
  from: 'youremail@gmail.com',
  to: 'myfriend@yahoo.com',
  subject: 'Sending Email using Node.js',
  text: 'That was easy!'
};
​
transporter.sendMail(mailOptions, function(error, info){
  if (error) {
    console.log(error);
  } else {
    console.log('Email sent: ' + info.response);
  }
});

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how to send message to specific client using ws node js


var Server = require('ws').Server;
var port = process.env.PORT || 9030;
var ws = new Server({port: port});
​
var sockets = [];
ws.on('connection', function(w){
  
  var id = w.upgradeReq.headers['sec-websocket-key'];
  console.log('New Connection id :: ', id);
  w.send(id);
  w.on('message', function(msg){
    var id = w.upgradeReq.headers['sec-websocket-key'];
    var message = JSON.parse(msg);
    
    sockets[message.to].send(message.message);
​
    console.log('Message on :: ', id);
    console.log('On message :: ', msg);
  });
  
  w.on('close', function() {
    var id = w.upgradeReq.headers['sec-websocket-key'];
    console.log('Closing :: ', id);
  });
​
  sockets[id] = w;
});
​
​

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