Angular 6 + go session

[johnix (Charlemagne)]

Hi Guys,

I am learning go and also angular 6.
My problem is that I cannot retrieve the session I created using the angular 6 request.
I have a request to create a simple session on go and when I try to pull that session again from angular, the session is null.

Thanks

[lutzhorn]

It is hard to answer your question without more details.

• How do you create the session?
• How do you store it in your Go code?

[johnix (Charlemagne)]

I follow it from this URL https://github.com/gorilla/sessions

import (
		"net/http"
		"github.com/gorilla/sessions"
	)

	var store = sessions.NewCookieStore([]byte("something-very-secret"))

	func CreateSessionEndPoint(w http.ResponseWriter, req *http.Request) {
	w.Header().Set("Access-Control-Allow-Origin", allowedURL)
		session, _ := store.Get(req, "login")
		session.Values["userDetails"] = "Object values here...."
		session.Save(req, w)
	}

And for the retreival of seesion, this is my code.

func CheckSessionEndPoint(w http.ResponseWriter, req *http.Request) {
    	w.Header().Set("Access-Control-Allow-Origin", allowedURL)
    	session, err := store.Get(req, "login")

    	if err != nil {
    		http.Error(w, err.Error(), http.StatusInternalServerError)
    		return
    	}

    	val := session.Values["userDetails"]
    	//var details = &UserDetails{}
    	details, _ := val.(*UserDetails)
    	fmt.Println(details) //This will display null when calling from angular.
    	json.NewEncoder(w).Encode(details)
    }

Also, the angular is installed outside my go project.
I manage to access the go URL by putting this “w.Header().Set(“Access-Control-Allow-Origin”, allowedURL)” on every function endpoint

Below is my anuglar code on calling the go API:

import { Injectable } from '@angular/core';
import { Http, Request, RequestOptions, RequestMethod } from '@angular/http';
import { map, takeUntil, tap } from 'rxjs/operators';
import { UserLoginComponent } from '../../components/user-login/user-login.component';



@Injectable({
  providedIn: 'root'
})
export class AuthenticationService {

  

  constructor(private http:Http) { }

  login(userDetails:IUserDetails){


    let _body = JSON.stringify(userDetails);
    return this.http.post("http://localhost:8080/api/CreateSession",_body).pipe(map(res=>res.json()));
  }

  getSession(){
    var session = this.http.get("http://localhost:8080/api/checkSession").pipe(map(res=>res.json()));
    console.log(session.subscribe((posts)=>{
      console.log("get session",posts);
    }));
  }

}

export interface IUserDetails{
    ID:number,
    FirstName:string,
    LastName:string,
    Email:string,
    Password:string,
    BirthDate:Date,
    CreatedDate:Date
}

[johnix (Charlemagne)]

I got it resolve.
From my http request, I just need to add header.

  headerOption:RequestOptions;
  constructor() { 
    this.headerOption = new RequestOptions({
      headers: new Headers({ 
        'Content-Type':  'application/json'}),
        withCredentials: true
      });

  }