I want to check network and Internet availability in Action Script programming language. please help me.
var request : URLRequest = new URLRequest ( YOUR URL HERE );
var loader : URLLoader = new URLLoader ();
loader.addEventListener( Event.COMPLETE, handleLoaderComplete );
loader.addEventListener(HTTPStatusEvent.HTTP_STATUS, ldrStatus);
loader.load ( request );
protected function ldrStatus(evt:HTTPStatusEvent):void
{
trace(evt.status)
}
protected function handleLoaderComplete(event:Event):void
{
trace("COMPLETE");
}
try above code, evt.status should give 200, in success.
If you are using AS3, You can use
HTTPStatusEvent
Related
I tried to change the existing angularjs library to angular2 for my need. http.post method in the below code throws TypeError {} as exception. Someone please help as i am stuck on this.
login() {
return new Promise((resolve, reject) => {
if(typeof jsSHA !== "undefined") {
var signatureObj = (new OauthUtility()).createSignature("POST", this.magentoOptions.baseUrl+"/oauth/initiate", this.oauthObject, {oauth_callback: "http://localhost/callback"}, this.magentoOptions.clientSecret, null);
let headersInitiate = new Headers();
headersInitiate.append('Authorization',signatureObj.authorization_header);
headersInitiate.append('Content-Type','application/x-www-form-urlencoded');
let url = this.magentoOptions.baseUrl + "/oauth/initiate";
let callback = "oauth_callback=http://localhost/callback";
try{
this.http.post(url, callback,{headers: headersInitiate})
.subscribe(
(result) => {
console.log("i am inside");
var rParameters = (result).split("&");
.....
}
catch(Exception){
console.log(Exception)
}
You should try something like that:
var signatureObj = (new OauthUtility()).createSignature("POST",
this.magentoOptions.baseUrl+"/oauth/initiate", this.oauthObject,
{oauth_callback: "http://localhost/callback"},
this.magentoOptions.clientSecret, null); let headersInitiate = new Headers();
headersInitiate.append('Authorization',
signatureObj.authorization_header);
headersInitiate.append('Content-Type',
'application/x-www-form-urlencoded');
let url = this.magentoOptions.baseUrl + "/oauth/initiate";
let payload = ' ... ';
this.http.post(url, payload,{headers: headersInitiate})
.subscribe(
(result) => {
console.log("i am inside");
var rParameters = (result).split("&");
(...)
});
Here are the comments I would have on your code:
The second parameter of the post method should be a string corresponding to the payload not a callback. I see from your headers that you want to send url-encoded form, so you need to create it by your own
The try catch isn't necessary since executing an HTTP is asynchronous and errors can be "catched" within the second parameter (another callback) of the subscribe method.
You don't need at all a promise. For HTTP, Angular2 uses observables under the hood. They target asynchronous processing as well.
After fixing all of this, I think that you won't have error anymore...
Hope it helps you,
Thierry
I found to stuck even after proceeding with the above all steps. The complete solution is as follows.
Remove try catch block and promise as suggested by Thierry.
Use dependency injection of http inside the constructor as follows to define http.
import {Http,HTTP_PROVIDERS,Headers} from 'angular2/http';
import {Injector} from "angular2/core";
constructor() {
var injector = Injector.resolveAndCreate([HTTP_PROVIDERS]);
this.http = injector.get(Http);
}
Here is a problem. When I ran these code:
String responseText = null;
HttpRequest.getString(url).then((resp) {
responseText = resp;
print(responseText);
});
print(responseText);
In console:
{"meta":{"code":200},"data":{"username":"kevin","bio":"CEO \u0026 Co-founder of Instagram","website":"","profile_picture":"http:\/\/images.ak.instagram.com\/profiles\/profile_3_75sq_1325536697.jpg","full_name":"Kevin Systrom","counts":{"media":1349,"followed_by":1110365,"follows":555},"id":"3"}}
null
It running asynchronously. Is there JAVA way with synchronized method? That will be await while request is done?
I found only one tricky way to do it and its funny -- wait for three seconds:
handleTimeout() {
print(responseText);
}
const TIMEOUT = const Duration(seconds: 3);
new Timer(TIMEOUT, handleTimeout);
And of course it works with bugs. So any suggestions?
MattB way work well:
var req = new HttpRequest();
req.onLoad.listen((e) {
responseText = req.responseText;
print(responseText);
});
req.open('GET', url, async: false);
req.send();
First, I'm assuming you're using this as a client-side script and not server-side. Using HttpRequest.getString will strictly return a Future (async method).
If you absolutely must have a synchronous request, you can construct a new HttpRequest object and call the open method passing the named parameter: async: false
var req = new HttpRequest();
req.onLoad.listen((e) => print(req.responseText));
req.open('GET', url, async: false);
req.send();
However it is highly recommended that you use async methods for accessing network resources as a synchronous call like above will cause the script to block and can potentially make it appear as though your page/script has stopped responding on poor network connections.
I need to post a PDF file to a remote REST API, and I can't for the life of me figure it out. No matter what I do, the server responds that I have not yet associated an object with the file parameter. Let's say that I have a PDF called test.pdf. This is what I've been doing so far:
// Using an HttpClientRequest named req
req.headers.contentType = new ContentType('application', 'x-www-form-urlencoded');
StringBuffer sb = new StringBuffer();
String fileData = new File('Test.pdf').readAsStringSync();
sb.write('file=$fileData');
req.write(sb.toString());
return req.close();
Thus far, I've tried virtually every combination and encoding of the data that I write() to the request, but to no avail. I've tried sending it as codeUnits, I've tried encoding it using a UTF8.encode, I've tried encoding it using a Latin1Codec, everything. I'm stumped.
Any help would be greatly appreciated.
You can use MultipartRequest from the http package :
var uri = Uri.parse("http://pub.dartlang.org/packages/create");
var request = new http.MultipartRequest("POST", url);
request.fields['user'] = 'john#doe.com';
request.files.add(new http.MultipartFile.fromFile(
'package',
new File('build/package.tar.gz'),
contentType: new ContentType('application', 'x-tar'));
request.send().then((response) {
if (response.statusCode == 200) print("Uploaded!");
});
Try using the multipart/form-data header rather than x-www-form-urlencoded. This should be used for binary data, also can you show your full req request?
void uploadFile(File file) async {
// string to uri
var uri = Uri.parse("enter here upload URL");
// create multipart request
var request = new http.MultipartRequest("POST", uri);
// if you need more parameters to parse, add those like this. i added "user_id". here this "user_id" is a key of the API request
request.fields["user_id"] = "text";
// multipart that takes file.. here this "idDocumentOne_1" is a key of the API request
MultipartFile multipartFile = await http.MultipartFile.fromPath(
'idDocumentOne_1',
file.path
);
// add file to multipart
request.files.add(multipartFile);
// send request to upload file
await request.send().then((response) async {
// listen for response
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}).catchError((e) {
print(e);
});
}
I used file picker to pick file.
Here is the codes for pick file.
Future getPdfAndUpload(int position) async {
File file = await FilePicker.getFile(
type: FileType.custom,
allowedExtensions: ['pdf','docx'],
);
if(file != null) {
setState(() {
file1 = file; //file1 is a global variable which i created
});
}
}
here file_picker flutter library.
I am building a mobile app that connects to my grails app that uses spring security core.
Im building the app in titanium studio.
How do i check it the user has an open session on the mobile app.
I log in using the with the following code:
var xhr = Ti.Network.createHTTPClient();
var url = "http://localhost:8080/FYP/j_spring_security_check";
var postData = "";
postData += 'j_username=' + usernameField.value;
postData += '&j_password=' + passwordField.value;
postData += '&_spring_security_remember_me=on';
Ti.API.debug(url);
xhr.open("POST", url);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
xhr.onload = function() {
var response = JSON.parse(xhr.responseText);
win.close({animate:true});
slidingMenu.open({animate:true});
if( response.error ){
alert( response.error );
} else {
//logged in now do something
}
};
xhr.onerror = function(){
Ti.API.error( "Error Logging in" );
};
xhr.send(postData);
But how would i check if the user has already logged in?
Make a custom method in grails using
springsecurityservice.isLoggedIn()
and do a GET request :)
I simply use an application level variable. It situations when I need to protect data, I always pass the username and password I stored to the server so it has to authenticate every time.
I get a bunch of different URL from my sources and what I would like is to redirect to the same URL, but with campaign data added to URL (to track the referred clicks).
For example I have these URLs:
www.example.com/category/product/name.html
www.example.com/id_product=5
I want to add at the end the following: utm_source=SOURCE&utm_medium=MEDIUM&utm_campaign=CAMPAIGN
And the URLs to become
www.example.com/category/product/name.html?utm_source=SOURCE&utm_medium=MEDIUM&utm_campaign=CAMPAIGN
www.example.com/id_product=5&utm_source=SOURCE&utm_medium=MEDIUM&utm_campaign=CAMPAIGN
How to I correctly check and cover all the cases if a URL string has parameters, and add mine?
I want to do it in node.js
Thank you
Elaborating on #snkashis, a similar but arguably more elegant solution, again using node's url module, is:
var addQueryParams = function (cleanUrl) {
var obj = url.parse(cleanUrl, true, false);
obj.query['utm_source'] = 'SOURCE';
obj.query['utm_medium'] = 'MEDIUM';
obj.query['utm_campaign'] = 'CAMPAIGN';
delete obj.search; // this makes format compose the search string out of the query object
var trackedUrl = url.format(obj);
return trackedUrl;
};
This works, because url.format first looks for search and, if it can't find it, it composes the query string from the query object
(taken from node url module documentation http://nodejs.org/api/url.html#url_url_format_urlobj )
search will be used in place of query
query (object; see querystring) will only be used if search is absent.
Here is a example showing different scenarios using Node's URL module.
var url = require('url');
var exurls = ["www.example.com/category/product/name.html","www.example.com/id_product=5?hasparam=yes"]
var to_append = "utm_source=SOURCE&utm_medium=MEDIUM&utm_campaign=CAMPAIGN";
for (i=0;i<exurls.length;i++) {
var parsedobj = url.parse(exurls[i],true,false);
//Below checks if param obj is empty.
if (Object.keys(parsedobj.query).length!==0) {
var newpath = parsedobj.href+"&"+to_append;
}
else {
var newpath = parsedobj.href+"?"+to_append;
}
console.log(newpath);
}
Connect will help you:
var connect = require('connect');
var app = connect();
app.use(connect.query());
app.use(function (req, res, next) {
console.log(req.query);
res.end(JSON.stringify(req.query));
});
app.listen(3000);