Cant POST JSON data to https REST API via Ext.Ajax while GET is possible

[fsuarez]

Hi,

Im trying to use Ext.Ajax to post some data as JSON to a Rest API server. Its a cross domain request but the server uses CORS. Im able to do GET and retrieve JSON data with no problems but when trying to do a POST it fails. In the following code I try to do a login

     login = function (callerInstance, user, pass, onLogin) {
        Ext.Ajax.setUseDefaultXhrHeader(false); 
        var url = SERVER + "login";
        var data = {};
        data.username = user;
        data.password = pass;
        Ext.Ajax.request({
            url: url,
            method: 'POST',
            jsonData: data,
            success: function(response, opts) {
                console.log(TAG + 'responseText: ' + response.responseText);
                onLogin.call(callerInstance, LOGGED_IN, response.responseText);
            },
            failure: function(response, opts) {
                console.log(TAG + 'server-side failure with status code ' + response.status);
                console.log(TAG + 'responseText: ' + response.responseText);
                onLogin.call(callerInstance, NOT_LOGGED_IN, response.responseText);
            }
        });
    };

The result of this is

[COLOR=red !important]Resource failed to load Connection.js:317[/COLOR]
HosRestApi: server-side failure with status code 0 

And if I comment out the jsonData line, I get this error:

[COLOR=red !important]500 (Internal Server Error) Connection.js:317[/COLOR]

HosRestApi: server-side failure with status code 500
HosRestApi: responseText: {"errorText":"Internal Server Error: Object reference not set to an instance of an object."}

So the server is trying to process the request but failing as there is no login data.
So Im not sure why is the first error I mentioned happening or where is happening, or whats the problem.
The URL is https, does that makes any difference?
Please help me on this one!

[mitchellsimoens]

Did you check the request in the network tab of the dev tools to see your request and how things are sent?

[fsuarez]

I did but I got no response when doing the POST. As I dont have acces to the server I want to communicate with, I asked to check the server configuration and the header ACCES-CONTROL-ALLOW-METHOD is not seted to allow POST, actually is not seted at all. So maybe is a CORS problem after all, but I dont know why I dont get an error saying that Im not allowed to do the request. Anyway, they wont change it in a couple of weeks so I will tell you later what happened.
Thanks for your help

[fsuarez]

It was a CORS problem after all. To get my server supporting CORS Im using the following configuration:

<customHeaders>
	<add name="Access-Control-Allow-Origin" value="*" />
	<add name="Access-Control-Allow-Methods" value="GET, POST, DELETE, OPTIONS" />
	<add name="Access-Control-Allow-Headers" value="origin, content-type, x-requested-with" />
</customHeaders>

In the web.config file (its a IIS server). I hope this helps someone