I make GET - http request and in most TVs, which I test, everything is fine, but I have some TVs that they display "NETWORK ERROR". Of course the TVs are connected to the network and the server is working (meaning the URL is correct. Is exactly the same code in all TV sets in any case). The strangest thing is that these TVs (with the error) have access to the Internet, e.g. YouTube works well.
function httpGet(theUrl)
{
var xmlHttp = new XMLHttpRequest();
xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
xmlHttp.send( null );
}
I don't care for the xmlHttp.responseText
I tried hard reset with no luck.
The approach using:
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
// callback function implementation
};
xmlhttp.open("GET", url, true);
xmlhttp.send();
always works for us.
Perhaps some browser security feature is blocking you, such as CORS or XSS or HTTPS or ...?
You can try downloading a static image from the same origin to confirm.
Related
I would like to capture the SAML Response from a URL request made which uses hidden SAML authentication. I am able to see the response in Fiddler but how to save it for further analysis. Post the redirect request by the URL, SAML reponse with "200 OK" arrives in fiddler and I want to capture it. Is there any Powershell utility which can be used to do the same or Do I have to automate the Fiddler itself using some module. Please suggest if any other option is also there.
I have tried some snippets with "Invoke-WebRequest" in Powershell but not able to reproduce much regarding the SAML Response.
Tooting my own horn but my chrome plugin will help you with this. It adds a ta to the dev tools console. Then tabs show all traffic and highlights the ones wiyh saml messages. When you click one it will show you the saml xml in clear text nicely formated.
I have tried a lot of things and finally getting it almost done with the help of phantomjs.
var page = require('webpage').create();
page.customHeaders={'Authorization': 'Basic '+btoa('USER:PASSWORD')};
// hook into initial request
page.onResourceRequested = function(request) {
//console.log("Request: "+ JSON.stringify(request, undefined, 4));
var req_json = JSON.stringify(request, undefined, 4);
if (request.method == "POST" && request.postData != null){
//console.log("Request: "+ JSON.stringify(request, undefined, 4));
console.log("SAML Req/Resp: \n" + request.postData);
}
};
// hook to response
page.onResourceReceived = function(response) {
//console.log("Response: "+ JSON.stringify(response, undefined, 4));
var resp_json = JSON.stringify(response, undefined, 4);
};
page.open("https://yourURLwithhiddenSAML");
For now I am able to get the postdata with SAMLRequest and SAMLResponse and redirecting the output to some file. However, there is one more thing I have noticed. If I add
phantom.exit();
inside the function I am not able to get the complete request/response lifecycle which contains SAML.
Is there something like Chromium's chrome.webRequest for Safari extensions? I went through their documentation here. The closest thing I could find was SafariBeforeNavigateEvent. This will prevent the new page load but still would send the request to the server. Moreover I don't think it will call the listeners on AJAX requests. Anyone tried something similar?
We solved this problem by using "xmlhttprequest" overriding.
This is our content.js . We injected content.js as start script
$(document).ready(function() {
var myScriptTag = document.createElement('script');
myScriptTag.src = safari.extension.baseURI + 'js/injectedToPage.js';
document.body.appendChild(myScriptTag);
});
injected code is: (injectedToPage.js)
XMLHttpRequest.prototype.reallySend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function (body) {
console.log("--req.body:---");
console.log(body);
this.reallySend(body);
};
var req = new XMLHttpRequest();
req.open("GET", "any.html", true);
req.send(null);
I have basic authentication enabled in my site. I able to clear user credential in IE, Mozilla and Chrome but not able to clear credential from Safari.
I tried the following
Calling an Ajax request and setting status code to 401
Calling an Ajax request with username passed in URL: http://invalidUSer#site.com
But both of them are not working properly. Whenever I close and open a new safari credentials are not at all removed.
Below is the code snippet:
In logoout Page i have following scripts:
$.ajax({
type: "POST",
contentType: "application/javascript",
async: true,
url: "../ClearAuthentication.aspx"
});
And in ClearAuthentication.aspx.vb
'Context.Response.Redirect("http://www.test.com", False) ' have tried this both adding and removing
Response.StatusCode = 401
Page.Response.StatusDescription = "Unauthorized"
'Page.Response.AppendHeader("WWW-Authenticate", "Basic realm=""foo""") ' have tried this both adding and removing
Context.Response.End()
We have same problem. We succeeded with following hack. It's like a simple login request but with false credentials.
function logout() {
var request = new XMLHttpRequest();
request.open("get", "/rest/login", false, user.login, "false");
request.send();
window.location.replace("/");
}
This solution is last answer on the question.
I have the following problem: I am trying to get data from the googlemaps api v3 via ajax with the code below. It works fine in Chrome and Firefox, but not in IE. What am I doing wrong?
var lat;
$.ajax({
url: "url",
cache: false,
dataType: "json",
success: function(data) {
lat = data.results[0].geometry.location.lat;
}
});
Add the following error event to your Ajax call
success: function(data) {
lat = data.results[0].geometry.location.lat;
},
error: function(xhr, status, error) {
alert(status);
}
And let us know what error message you get in IE, if any at all.
EDIT - Sounds like you are trying to do a cross-domain request?
If that is the case, try setting $.support.cors = true; before your ajax request.
Fetched from http://api.jquery.com/jQuery.support/
To enable cross-domain requests in environments that do not support cors yet but
do allow cross-domain XHR requests (windows gadget, etc), set
$.support.cors = true;
EDIT2 - Ill assume you are running IE9, in that case you need a plugin for jQuery found here:
https://github.com/jaubourg/ajaxHooks/blob/master/src/xdr.js
Also see this answer on SO for more details on why a plugin is needed for IE9 (with cors): IE9 jQuery AJAX with CORS returns "Access is denied"
EDIT3 - Download jQuery.XDomainRequest.js and include it before your AJAX call.
I'm trying to write a front end to an API service with Node JS.
I'd like to be able to have a user point their browser at my node server and make a request. The node script would modify the input to the request, call the api service, then modify the output and pass back to the user.
I like the solution here (with Express JS and node-http-proxy) as it passes the cookies and headers directly from the user through my site to the api server.
proxy request in node.js / express
I see how to modify the input to the request, but i can't figure out how to modify the response. Any suggestions?
transformer-proxy could be useful here. I'm the author of this plugin and I'm answering here because I found this page when looking for the same question and wasn't satisfied with harmon as I don't want to manipulate HTML.
Maybe someone else is looking for this and finds it useful.
Harmon is designed to plug into node-http-proxy https://github.com/No9/harmon
It uses trumpet and so is stream based to work around any buffering problems.
It uses an element and attribute selector to enable manipulation of a response.
This can be used to modify output response.
See here: https://github.com/nodejitsu/node-http-proxy/issues/382#issuecomment-14895039
http-proxy-interceptor is a middleware I wrote for this very purpose. It allows you to modify the http response using one or more transform streams. There are tons of stream-based packages available (like trumpet, which harmon uses), and by using streams you can avoid buffering the entire response.
var httpProxy = require('http-proxy');
var modifyResponse = require('http-proxy-response-rewrite');
var proxy = httpProxy.createServer({
target:'target server IP here',
});
proxy.listen(8001);
proxy.on('error', function (err, req, res) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end('Something went wrong. And we are reporting a custom error message.');
});
proxy.on('proxyRes', function (proxyRes, req, res) {
modifyResponse(res, proxyRes.headers['content-encoding'], function (body) {
if (body && (body.indexOf("<process-order-response>")!= -1)) {
var beforeTag = "</receipt-text>"; //tag after which u can add data to
// response
var beforeTagBody = body.substring(0,(body.indexOf(beforeTag) + beforeTag.length));
var requiredXml = " <ga-loyalty-rewards>\n"+
"<previousBalance>0</previousBalance>\n"+
"<availableBalance>0</availableBalance>\n"+
"<accuruedAmount>0</accuruedAmount>\n"+
"<redeemedAmount>0</redeemedAmount>\n"+
"</ga-loyalty-rewards>";
var afterTagBody = body.substring(body.indexOf(beforeTag)+ beforeTag.length)+
var res = [];
res.push(beforeTagBody, requiredXml, afterTagBody);
console.log(res.join(""));
return res.join("");
}
return body;
});
});