What config does in the axios.get? - javascript

Can someone help me understand why it should have the config for this? What was headers or authorization does? Why should I put it as a second parameter?
dispatch({ type: 'FETCH_REQUEST' });
let config = {
headers: { authorization: `Bearer ${userInfo.token}` },
};
//Fetching the data from the backend
const { data } = await axios.get(`/api/orders/${orderId}`, config);

The header is essentially the header of the HTTP request. You need it for special config like authentication key, XSSR token, and other special config which you can read more in that link. The authorization is a authorization token. This is usually the JWT token that you got from the server when you've finished the authentication process. You can read more on the JWT authentication process here. Once you got the authorization token in your header of your request and send it to your server, your server will read in this token, deserialize it to get the data and determine if your HTTP request are valid and return the data. If your token is not valid, the server will throw an 403 (Unauthorize) error.

axios() has a whole number of ways you can specify the request you want.
For example, you can specify just a config object:
// Send a POST request
axios({
method: 'post',
url: '/user/12345',
data: {
firstName: 'Fred',
lastName: 'Flintstone'
}
});
Where the config object contains the method, url and other necessary options.
For all other types of requests, the config object is optional and is only needed if you need to specify some argument other than the URL or the data to send.
For example, with axios.get(), you can use either axios.get(someUrl) or axios.get(someUrl, config). The config object can contain all the options listed here in the doc. Among those options are custom headers, data to append to the URL (for a GET request), options for timeout, sending of credentials, basic auth, progress callbacks, etc....
All these options in the config object are optional. You only need to specify the ones that your particular request requires.
In the code example you show in your question:
let config = {
headers: { authorization: `Bearer ${userInfo.token}` },
};
//Fetching the data from the backend
const { data } = await axios.get(`/api/orders/${orderId}`, config);
This is specifying a custom header for the request that contains an authorization token that is presumably required by the server for this particular type of request so that in the headers of the http request, it will add something like this:
Authorization: Bearer someTokenValueHere
You can read about the authorization header here.

Related

I can not send parameter using GET with jQuery to node js REST API [duplicate]

I have a React application where I am changing POST method to GET with the request body as it is. It works fine with POST request however when I change the method to GET, it gives me error-
message: "org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public
My Front End Code-
export const setData = (getData) => dispatch => {
axios({
method: 'GET',
url: 'http://localhost:8080/api',
headers: {
'Content-Type': 'application/json'
},
data: getData
})
.then (response => {
dispatch({
type: API_DATA,
payload: response.data
})
dispatch({
type: SET_SEARCH_LOADER,
payload: false
})
})
.catch(function(error) {
})
}
Can someone let me know what I am missing here. As per my understanding, http allows to have a request body for GET method.
As per my understanding, http allows to have a request body for GET method.
While this is technically true (although it may be more accurate to say that it just doesn't explicitly disallow it), it's a very odd thing to do, and most systems do not expect GET requests to have bodies.
Consequently, plenty of libraries will not handle this.
The documentation for Axois says:
// `data` is the data to be sent as the request body
// Only applicable for request methods 'PUT', 'POST', and 'PATCH'
Under the hood, if you run Axios client side in a web browser, it will use XMLHttpRequest. If you look at the specification for that it says:
client . send([body = null])
Initiates the request. The body argument provides the request body, if any, and is ignored if the request method is GET or HEAD.
If you want to send parameters with get request in axios, you should send parameters as params.
If you want to set "Content-type":"application/json" and send params with get request, you should also send an empty data object.
For example:
const AUTH_TOKEN = 'Bearer token'
const config = {
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
'Authorization': AUTH_TOKEN,
},
data: {},
params: {
"post_id": 1
}
}
axios.get("http://localhost/api/v1/posts/", config)
This is not axios, the error origniates from the java backend you're talking to. The public field in your request body is missing.
If you just want to send the data as parameters (which would be odd), pass it using params instead of data (as shown here: https://github.com/axios/axios#example).
I personally don't think your API should support GET with a request body (talk to the devs and ask for documentation).

axios : How exactly to preserve session after successful authorization and send with subsequent request - while testing without browser

In this test case am sending an axios post request with userId and password to ExpressJS server running with passportjs local. Server respond with status code 200, and send appropriate header with set-cookie.
I need subsequent request to be treated as authorized request, for that tried following options, but none seems to be working. It getting rejected with status code 401.
First call with userid and password, responded with status 200
const userDoc = {
userId: 'test-user-1',
userName: 'Test User 1',
emailId: 'test.user.1#abc.xom',
password: 'test-password'
} ;
let resp
resp = await axios({method : 'post', url : 'http://localhost:4040/auth/local', data : {userId: userDoc.userId, password: userDoc.password },withCredentials: true })
following options are used to send next request
send cookies received as part of 1st request
const headers = { headers : {Cookie: resp.headers['set-cookie'][0] } };
send header as it is received as part of 1st request
const headers = { headers : resp.headers};
send withCredentials: true along with above headers.
Second call is made with either of above option
resp = await axios({method : 'post', url : 'http://localhost:4040/v1/master/account', data : accountDoc , headers, withCredentials: true})
used httpAgent, keepAlive with axios instance
const axios = require('axios')
const http = require("http")
const httpAgent = new http.Agent({keepAlive : true , timeout :1000})
const instance = axios.create({httpAgent})
const resp1 = await instance({method : 'post', url : 'http://localhost:4040/auth/local', data : {userId: userDoc.userId, password: userDoc.password, } , withCredentials: true })
const resp2 = await instance({method : 'post', url : 'http://localhost:4040/v1/master/account', data : accountDoc , withCredentials: true })
Rejected with status code 401
-- Error: Request failed with status code 401
at createError (/home/Projects/FinAccounts2003/node_modules/axios/lib/core/createError.js:16:15)
at settle (/home/Projects/FinAccounts2003/node_modules/axios/lib/core/settle.js:17:12)
at IncomingMessage.handleStreamEnd (/home/Projects/FinAccounts2003/node_modules/axios/lib/adapters/http.js:269:11)
at IncomingMessage.emit (events.js:412:35)
at endReadableNT (internal/streams/readable.js:1334:12)
at processTicksAndRejections (internal/process/task_queues.js:82:21)
Server code is standard passport-js local code, which working well with browser.
It may be duplicate of some of the questions, solutions given are 1) withCredentials: true, already tried above 2) Authorization: Bearer ${token} - not applicable in this case, in passport js, cookie is directly set, and not getting token.
One solution that worked for me was using the modules tough-cookie and axios-cookiejar-support. I combined them in a persistent-client.js file, and then I was able to maintain the session between requests (commonJS):
const axios = require('axios').default;
const { CookieJar } = require('tough-cookie');
const { wrapper } = require('axios-cookiejar-support');
module.exports = function () {
const jar = new CookieJar();
const client = wrapper(axios.create({ jar }));
return client;
}
There are two different ways to send the session authorization token from the server to the client (web browser)
Via (HttpOnly) response headers.
Via the response body.
And there are two different ways to authorize client requests (send the session token from the web browser to the server.)
A. Automatic: HttpOnly headers
B. Manual: Authorization: Bearer [TOKEN]
Usually method 1 is used with method A, and method 2 is used with method B. I think you are mixing them up.
If the server is using Set-Cookie to send the session token, then I think the browser automatically sends the session token automatically on all future requests (to the same domain).
Can you confirm what the actual contents of the set-cookie header are from the server? Note you will probably not be able to check this via JS if these are HttpOnly cookies; inspect the dev console "Network" tab. You can also check to see if any new cookies were set from the "Application" tab.
If the client does actually need to manually send the token via headers, the header needs to fit a specific Authorization cookie format. (Which you are not doing. You are simply echoing the headers received from the server.)
See my response to a similar question.
I don't believe you should be using any third party packages for this, especially not if they're directly accessing the cookies using javascript (which is an XSS security vulnerability). Cookies should be set using secure and http-only and never be accessed using Document.cookie directly.
Make sure that passport is actually setting your cookie and that you're correctly sending back the cookie on the login. Verify that it's been set in your browser.
Make sure that you have CORS enabled in express, that you've specified the domain you're making requests from and that you've enabled credentials in CORS.
Make sure that you're using withCredentials on your axios requests.
Make sure that you've set the cookie using the correct domain and path.

How can I send data on request.body in an ajax call? [duplicate]

I have a React application where I am changing POST method to GET with the request body as it is. It works fine with POST request however when I change the method to GET, it gives me error-
message: "org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public
My Front End Code-
export const setData = (getData) => dispatch => {
axios({
method: 'GET',
url: 'http://localhost:8080/api',
headers: {
'Content-Type': 'application/json'
},
data: getData
})
.then (response => {
dispatch({
type: API_DATA,
payload: response.data
})
dispatch({
type: SET_SEARCH_LOADER,
payload: false
})
})
.catch(function(error) {
})
}
Can someone let me know what I am missing here. As per my understanding, http allows to have a request body for GET method.
As per my understanding, http allows to have a request body for GET method.
While this is technically true (although it may be more accurate to say that it just doesn't explicitly disallow it), it's a very odd thing to do, and most systems do not expect GET requests to have bodies.
Consequently, plenty of libraries will not handle this.
The documentation for Axois says:
// `data` is the data to be sent as the request body
// Only applicable for request methods 'PUT', 'POST', and 'PATCH'
Under the hood, if you run Axios client side in a web browser, it will use XMLHttpRequest. If you look at the specification for that it says:
client . send([body = null])
Initiates the request. The body argument provides the request body, if any, and is ignored if the request method is GET or HEAD.
If you want to send parameters with get request in axios, you should send parameters as params.
If you want to set "Content-type":"application/json" and send params with get request, you should also send an empty data object.
For example:
const AUTH_TOKEN = 'Bearer token'
const config = {
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
'Authorization': AUTH_TOKEN,
},
data: {},
params: {
"post_id": 1
}
}
axios.get("http://localhost/api/v1/posts/", config)
This is not axios, the error origniates from the java backend you're talking to. The public field in your request body is missing.
If you just want to send the data as parameters (which would be odd), pass it using params instead of data (as shown here: https://github.com/axios/axios#example).
I personally don't think your API should support GET with a request body (talk to the devs and ask for documentation).

Sending Request body for GET method in AXIOS throws error

I have a React application where I am changing POST method to GET with the request body as it is. It works fine with POST request however when I change the method to GET, it gives me error-
message: "org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public
My Front End Code-
export const setData = (getData) => dispatch => {
axios({
method: 'GET',
url: 'http://localhost:8080/api',
headers: {
'Content-Type': 'application/json'
},
data: getData
})
.then (response => {
dispatch({
type: API_DATA,
payload: response.data
})
dispatch({
type: SET_SEARCH_LOADER,
payload: false
})
})
.catch(function(error) {
})
}
Can someone let me know what I am missing here. As per my understanding, http allows to have a request body for GET method.
As per my understanding, http allows to have a request body for GET method.
While this is technically true (although it may be more accurate to say that it just doesn't explicitly disallow it), it's a very odd thing to do, and most systems do not expect GET requests to have bodies.
Consequently, plenty of libraries will not handle this.
The documentation for Axois says:
// `data` is the data to be sent as the request body
// Only applicable for request methods 'PUT', 'POST', and 'PATCH'
Under the hood, if you run Axios client side in a web browser, it will use XMLHttpRequest. If you look at the specification for that it says:
client . send([body = null])
Initiates the request. The body argument provides the request body, if any, and is ignored if the request method is GET or HEAD.
If you want to send parameters with get request in axios, you should send parameters as params.
If you want to set "Content-type":"application/json" and send params with get request, you should also send an empty data object.
For example:
const AUTH_TOKEN = 'Bearer token'
const config = {
headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
'Authorization': AUTH_TOKEN,
},
data: {},
params: {
"post_id": 1
}
}
axios.get("http://localhost/api/v1/posts/", config)
This is not axios, the error origniates from the java backend you're talking to. The public field in your request body is missing.
If you just want to send the data as parameters (which would be odd), pass it using params instead of data (as shown here: https://github.com/axios/axios#example).
I personally don't think your API should support GET with a request body (talk to the devs and ask for documentation).

How to retrieve a Bearer Token from an Authorization Header in JavaScript (Angular 2/4)?

In JavaScript I have a method which authenticates to my server via an http post request successfully.
The response data from my server is sending a JWT in an Authorization header like so:
Authorization: Bearer mytoken12345abc
I can retrieve the authorization header successfully from my servers response data like so for example:
let authheader = response.headers.get('Authorization');
But how do I parse this? Is "Bearer" a key? so something like:
let token = authheader.Bearer
which obviously is not correct. What can I try next?
In other words, is the following the best approach?
let token = response.headers.get('Authorization');
let parsedToken = token.slice(7);
According to the jwt.io docu,
Whenever the user wants to access a protected route or resource, the user agent should send the JWT, typically in the Authorization header using the Bearer schema.
Therefore using the JWT in the Authorization header is supposed to be used by the client, not the server for the initial response.
The correct way is to get the token as part of the response body. We use a
{ jwt: TOKEN }
type scheme for that.
Then you can easily access it via your response.json().
You can access the header value directly using response.headers.get(...) but then you will have to split, substr or regex-match to get the actual token.
When you get token from server set it in storage of browser session/local like below
sessionStorage.setItem('token', authheader);
Whenever you call the services to server set Authorization token in header it's a secure way like below
import { Http, Headers, RequestOptions, Response } from '#angular/http';
getUser(){
let headers = new Headers({ 'Authorization': 'Bearer ' + sessionStorage.getItem('token') });
let options = new RequestOptions({ headers: headers });
// get users from api
return this.http.get('http://localhost:9000/api/user', options)
.map((response: Response) => response.json());
}

Categories

Resources