The SDK demo works fine (it doesn't need special CORS stuff since it is on the same domain)
When I try to send the request from localhost:8080 this happens
So I'm trying to request api.soundcloud.com/tracks - first my browser sends an OPTIONS req to api.soundcloud.com asking if it's okay to call cross-origin. api.soundcloud.com does not return the headers my browser is looking for so my browser throws an error and can't make the request.
Am I the only person trying to use the APIs from another domain or is something going wrong here?
EDIT: Doing debugging in wireshark - when making an API call using the SDK in the browser an OPTIONS request isn't even being sent. WTF
here's a working example where request is coming from jsbin.com:
var request = new XMLHttpRequest();
request.onreadystatechange = function () {
if (request.readyState === 4 && request.status === 200) {
console.log(request.responseText);
}
};
request.open('GET', 'http://api.soundcloud.com/tracks?client_id=YOUR_CLIENT_ID');
request.send();
Related
For example I want to fetch https://www.w3schools.com/xml/simple.xml
to my website http://example.com.
This is the code
var xhr = new XMLHttpRequest();
xhr.open("GET", 'https://www.w3schools.com/xml/simple.xml', true);
xhr.onload = function () {
if (xhr.readyState === 4 && this.status === 200) {
console.log(this);
}
}
xhr.send();
I'm getting an empty response and a warning saying
Cross-Origin Read Blocking (CORB) blocked cross-origin response https://www.w3schools.com/xml/simple.xml with MIME type text/xml. See https://www.chromestatus.com/feature/5629709824032768 for more details.
Then I had been studying these CORB rules. Some developers are saying that it is not possible to get data from another origin.
But is it really the case?
In the project I'm working on, it is a public xml feed, and since the owner are updating the feed quite often - and I would like to have my website in sync with the feed - I assume it is not possible? Do I really have to create a xml file, and copy-paste the xml data and upload it to my server each time?
Or is there a way to fetch this data directly from the url somehow?
You could create a PHP script like this:
<?php
header("Content-type: text/xml");
echo file_get_contents('https://www.w3schools.com/xml/simple.xml');
?>
Call this simple.php and then amend your Javascript to call simple.php instead:
var xhr = new XMLHttpRequest();
xhr.open("GET", 'simple.php', true);
xhr.onload = function () {
if (xhr.readyState === 4 && this.status === 200) {
console.log(this);
}
}
xhr.send();
I want to make an ajax request from IBM Connections XCC:
let api = 'https://my-server2/api.xml'
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = () => {
if (xmlhttp.readyState == XMLHttpRequest.DONE)
if (xmlhttp.status == 200) {
console.log(xmlhttp.responseText)
}else {
console.log(`Error: ${xmlhttp.readyState}`)
}
}
Result in the network tab is a request to https://connections-host/communities/ajaxProxy/https/my-server2/api.xml so the request is proxied over the connections server. Because of this I get an empty API result since I need an authorized user session. My idea was: The user is logged in in his browser on my-server2 application. So when making an ajax request to my-server2, I can get the API information in his user context.
So my question is: How can I bypass those proxy?
Since I don't set it, I assume that connections manipulate the XMLHttpRequest class in a way like this: https://gist.github.com/dewdad/8830348
I want to view it's code to see the manipulation with this code in the console, but it only shows native code
window.XMLHttpRequest.prototype.open.toString()
"function open() {
[native code]
}"
Connections uses an AJAX proxy to control what's sent out to non-Connections sites/apps. You can configure it for your site to allow specific methods, headers and cookies to be sent to the non-Connections site. I'd take a look at this document on Connections 6.0 https://www.ibm.com/support/knowledgecenter/en/SSYGQH_6.0.0/admin/secure/t_admin_config_ajax_proxy_feature.html
I think that should help you get what you want.
I have been googling for hours now. I've read a dozen "answers" on Stackoverflow, all of them using jQuery.
This is the common answer...
The ajax-request will follow that redirect afaik
Well, it doesn't.
I am trying to send a PUT from a form via native JS AJAX
[Please I beg you, don't tell me to use jQuery. I found a bug in jQuery via PUT
(1) so I'm going around it]
This is my code snippet...
var xhr = new XMLHttpRequest();
xhr.open(method, url);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(data);
xhr.onload = function (e) {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
console.log(xhr.responseText);
} else {
console.error(xhr.statusText);
}
}
};
xhr.onerror = function (e) {
console.error(xhr.statusText);
};
This block works great, I can POST, PUT and DELETE without issues. The server receives the data and updates the DB according to the sent METHOD just fine.
My (SLIM based) PHP, upon successful completion, returns a 302 and a URL to go to.
This process works using POSTMAN hitting the PHP, and it goes to the right page.
Opening Chrome Tools/Network, it shows that the PHP is returning a 302 and than a 200
My response object contains the full HTML for a page in the responseText property.
Funny thing is, if I hard code a bad URL,the browser goes to my 404 page fine.
Your thoughts? (Please don't ask me or tell me to use jQuery)
EDIT/ADDENDUM -----------------------
I have discovered that the redirect is using the same METHOD of the original call.
I'm doing
PUT /user/1
the Redirect is doing
PUT http://myserver.test/
This is the right place to go. Now I understand the 405.
I don't have a PUT route defined, therefore the 405.
I create a PUT route and it works in POSTMAN but still gives me a 405 in Chrome and Firefox.
I have 2 issues to solve:
1) change the METHOD on the redirect
2) figure out why the browser doesn't like the 307
I found "a" solution. I'm not sure I like it, but...
var xhr = new XMLHttpRequest();
xhr.open(method, url);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(data);
xhr.onload = function (e) {
if (xhr.readyState === 4) {
window.location.replace(xhr.responseURL); // <---- solution
}
};
i try to make a Firefox Addon which runs a XMLHttp Request in Javascript. I want to get the data from this request and send it to *.body.innerhtml.
That's my code so far...
var xhr = new XMLHttpRequest();
xhr.open("GET", "http://xx.xxxxx.com", true);
xhr.send();
setTimeout(function() { set_body(xhr.responseHtml); }, 6000);
Instead of receiving the data, I get "undefined". If I change xhr.responseHtml to responseText I get nothing. I don't know why I'm getting nothing. I'm working on Ubuntu 12.04 LTS with Firefox 12.0.
If you need any more details on the script please ask!
Update:
set_body Function
document.body.innerHTML = '';
document.body.innerHTML = body;
document.close();
Update SOLVED:
I had to determine the RequestHeaders (right after xhr.open):
xhr.setRequestHeader("Host", "xxx");
For following Items: Host, Origin and Referer. So it seems there was really a problem with the same origin policy.
But now it works! Thanks to all!
when you set the last param of open to true you are asking for an async event. So you need to add a callback to xhr like so:
xhr.onReadyStateChange = function(){
// define what you want to happen when server returns
}
that is invoked when the server responds. To test this without async set the third param to false. Then send() will block and wait there until the response comes back. Setting an arbitrary timeout of 6 seconds is not the right way to handle this.
This code should work:
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
if (xhr.readyState == 4) {
set_body(xhr.responseText);
}
};
xhr.open("GET", "http://xx.xxxxx.com", true);
xhr.send();
Make sure that you are getting a correct response from URL http://xx.xxxxx.com. You may have a problem with cross-domain calls. If you have a page at domain http://first.com and you try to do XMLHttpRequest from domain http://second.com, Firefox will fail silently (there will be no error message, no response, nothing). This is a security measure to prevent XSS (Cross-site scripting).
Anyway, if you do XMLHttpRequest from a chrome:// protocol, it is considered secure and it will work. So make sure you use this code and make the requests from your addon, not from your localhost or something like that.
There is a lot of same questions but i cannot find the answer so i am reposing the same question.I am receiving an json request using java script
var request = null;
if (window.XMLHttpRequest) {
request = new XMLHttpRequest();
} else if (window.ActiveXObject) {
request = new ActiveXObject("Microsoft.XMLHTTP");
} else {
return null;
}
request.open("GET", url, true);
request.send(null);
request.onreadystatechange = function() {
if (request.readyState == 4) {
if (request.status == 200) {
}
} else
alert(request.status);
}
I am receiving an status code zero while i receive the request the javascript runs on apache server and json request will be received from tomcat server everything is local . can any one tell me how to over come it.
Note: i cannot use any framework.
I suspect that you are violating the same origin policy restriction that is built in browsers. This restriction prevents you from sending cross domain AJAX requests. So for example if the page containing the AJAX call is hosted on http://localhost/example.htm and you are trying to send an AJAX request to http://localhost:8080/somescript you won't be able to do so because the domains do not match (different ports).
The best way to ensure that your AJAX requests work is by only using relative urls:
request.open("GET", "/somescript", true);