ConnectFailure in AjaxPro on certain browsers

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This issue has been reproduced on PlayStation 3, 4, Xbox360, Xbox One. This issue is present with all versions of AjaxPro.

When making an Ajax request (using AjaxPro) the server returns the correct content. However, the object returned in the call back function is

{
   "error": 
    {
     "Message":"","Type":"ConnectFailure","Status":200},"value":null,
     "request":
     {
       "method":"MethodName",
       "args":
       {
          "Argument1":"1111","Argument2":"2222"
       }
     },
    "context":null,"duration":18
   }
}

In my case, I am having this same error when using AjaxPro with https, TLS 1.2, ECDHE_RSA with P-256 key exchange, and AES_256_GCM cipher (IE11+, Chrome51+, Firefox49+. Check yours here). It runs ok with obsolete AES_256_CBC with HMAC-SHA1 cipher.

The problem is that XMLHttpRequest.statusText property is empty after server response (I do not really know why) and AjaxPro.Request.prototype.doStateChange method (ajaxpro/core.ashx file) expected "OK" to take response as valid:

var res = this.getEmptyRes();
if(this.xmlHttp.status == 200 && this.xmlHttp.statusText == "OK") {
    res = this.createResponse(res);
} else {
    res = this.createResponse(res, true);
    res.error = {Message:this.xmlHttp.statusText,Type:"ConnectFailure",Status:this.xmlHttp.status};
}

I finally decided to override AjaxPro.Request.prototype.doStateChange method and allow an empty value in this.xmlHttp.statusText.

I added this script to my affected pages:

$(function() {
    if (typeof AjaxPro != 'undefined' && AjaxPro && AjaxPro.Request && AjaxPro.Request.prototype) {
        AjaxPro.Request.prototype.doStateChange = function () {
            this.onStateChanged(this.xmlHttp.readyState, this);
            if (this.xmlHttp.readyState != 4 || !this.isRunning) {
                return;
            }
            this.duration = new Date().getTime() - this.__start;
            if (this.timeoutTimer != null) {
                clearTimeout(this.timeoutTimer);
            }
            var res = this.getEmptyRes();
            if (this.xmlHttp.status == 200 && (this.xmlHttp.statusText == "OK" || !this.xmlHttp.statusText)) {
                res = this.createResponse(res);
            } else {
                res = this.createResponse(res, true);
                res.error = { Message: this.xmlHttp.statusText, Type: "ConnectFailure", Status: this.xmlHttp.status };
            }
            this.endRequest(res);
        };
    }
});

ConnectFailure in AjaxPro on certain browsers - asp.net - html, xmlHttp.status }; } For some reason, the browsers on the identified platforms do not return xmlHttp.statusText as "OK". Instead it is empty. This causes AjaxPro to  In the core.js, the following code is responsible for generating the response object when the server's response is received. For some reason, the browsers on the identified platforms do not return xmlHttp.statusText as "OK". Instead it is empty. This causes AjaxPro to fall through into "ConnectionFailure" clause.

Building on all the answers before this, and for reference for anyone else looking for this - in our situation, we tracked this down to the HTTP2 protocol (note - we were testing over HTTPS; I'm not sure there is a problem over HTTP...). - When we disabled HTTP2 in the browser (or for IIS on the server) then the AjaxPro calls worked normally. - When HTTP2 was being used, though, the response was a plain "200" instead of "200 OK", and AjaxPro interpreted that as a failure

Understanding WebRequest Problems and Exceptions, The following table shows several status values and some possible resolutions. ConnectFailure, The connection failed. A firewall or proxy is  ConnectFailure in AjaxPro on certain browsers. This issue has been reproduced on PlayStation 3, 4, Xbox360, Xbox One. This issue is present with all versions of AjaxPro. When making an Ajax request (using AjaxPro) the server returns the correct

The hint to this problem is in

"Message":""

AjaxPro's core.ashx file is generated using core.js

In the core.js, the following code is responsible for generating the response object when the server's response is received.

   if (this.xmlHttp.status == 200 && this.xmlHttp.statusText == "OK") {
        res = this.createResponse(res);
    } else {
        res = this.createResponse(res, true);
        res.error = { Message: this.xmlHttp.statusText, Type: "ConnectFailure", Status: this.xmlHttp.status };
    }

For some reason, the browsers on the identified platforms do not return xmlHttp.statusText as "OK". Instead it is empty. This causes AjaxPro to fall through into "ConnectionFailure" clause.

Solved: Add To Shopping Cart Stops jQuery, As soon as the shipping option is selected, the JS dies. Support are no help, they just res.error = {Message:"Unknown",Type:"ConnectFailure",Status:0};. this.​endRequest(res);. }, AjaxPro.noOperation;. if(async) {. if(MS.Browser.isIE) {. this​. 2 ConnectFailure in AjaxPro on certain browsers Sep 22 '18. Jan 6 '16. 1 IE 9 sometimes displays a Red X instead of a .NET Forms control, works in IE 8 Jan 26 '13.

Three Ways to Consume Web Services with AJAX: ASP Alliance, Add the specific attribute to the method with [AjaxPro. When you click the button Get Value in Figure 2, the browser will invoke its event handler as in Listing 5. www.pudn.com > AjaxPro-7131.rar > core.js, change:2006-10-31,size:17016b. Object.extend(Function.prototype, { getArguments: function() { var args = []; for(var i=0; i

How can I make a checkbox readonly? not disabled?, HTML set checkbox as readonly, Sometimes we don't want to make some form and whether the controls are available for browser-compatible form templates. 7444 | ConnectFailure in AjaxPro on certain browsers; 7342 | Is there a way to  Azure Content Delivery Network (CDN) offers two ways to control how your files are cached: Caching rules: This article describes how you can use content delivery network (CDN) caching rules to set or modify default cache expiration behavior both globally and with custom conditions, such as a URL path and file extension.

subject:"\[ajaxpro\] Re\: time out problem", See http://groups.google.com/group/ajaxpro/browse_thread/thread/ The problem here is that the connection from the web browser has aborted, and you see in IE7 it returns an error message of unknown and error type of Connect failure. Maybe you have still some wrong JavaScript code or something similar wrong. Galaxy S3, Android 4.4.2. When I'm on data and open wifi, I get the "couldn't establish a secure connection" on some websites. I know it's the phone because I can access the same sites on other phones. The date/time are correct. I wiped the cache and rebooted. It seems like I need to relax a se