Browser 7.3 XMLHttpRequest Issue (Known Issue)
m (Protected "KIC001676 - Browser 7.3 XMLHttpRequest Issue" ([edit=sysop] (indefinite) [move=sysop] (indefinite))) |
hamishwillee
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| − | + | {{ArticleMetaData <!-- v1.2 --> | |
| − | + | |sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] --> | |
| − | {{ | + | |installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) --> |
| + | |devices= <!-- Devices tested against - e.g. ''devices=Nokia 6131 NFC, Nokia C7-00'') --> | ||
| + | |sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Qt SDK 1.1.4]) --> | ||
| + | |platform= <!-- Compatible platforms - e.g. Symbian^1 and later, Qt 4.6 and later --> | ||
| + | |devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) --> | ||
| + | |dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 --> | ||
| + | |signing= <!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer --> | ||
| + | |capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. --> | ||
| + | |keywords= <!-- APIs, classes and methods (e.g. QSystemScreenSaver, QList, CBase --> | ||
| + | |language= <!-- Language category code for non-English topics - e.g. Lang-Chinese --> | ||
| + | |translated-by= <!-- [[User:XXXX]] --> | ||
| + | |translated-from-title= <!-- Title only --> | ||
| + | |translated-from-id= <!-- Id of translated revision --> | ||
| + | |review-by= <!-- After re-review: [[User:username]] --> | ||
| + | |review-timestamp= <!-- After re-review: YYYYMMDD --> | ||
| + | |update-by= <!-- After significant update: [[User:username]]--> | ||
| + | |update-timestamp= <!-- After significant update: YYYYMMDD --> | ||
| + | |creationdate= 20110823 | ||
| + | |author= [[User:Nokia Developer KB]] | ||
| + | }} | ||
{{KnowledgeBase | {{KnowledgeBase | ||
|id=KIC001676 | |id=KIC001676 | ||
Revision as of 07:24, 30 March 2012
Article Metadata
Article Metadata
Tested with
Devices(s): All devices with Browser 7.3
Compatibility
Platform(s): Symbian^3, Symbian S60 5th Edition, Symbian S60 3rd Edition FP2
Article
Created: (23 Aug 2011)
Last edited: hamishwillee
(30 Mar 2012)
Description
When a Symbian Web Runtime widget, started from the Applications menu, is trying to access the internet for the first time, an 'Allow connection to Network?' prompt is shown. In previous browser versions, answering 'No' fires an onoffline event and XMLHttpRequest completes with status code 0. In Browser 7.3, denying network access fires an onoffline event, but XMLHttpRequest does not complete.
Solution
The solution is to implement a timer that aborts the XMLHttprequest if it is taking too long to complete. This will ensure that the request won’t be left hanging forever. Also, please note that usage of online/offline API is recommended in all WRT widgets.
var timeOutDelay = 10000; // 10 sec
var timerId;
var xmlHttpRequest = new XMLHttpRequest();
xmlHttpRequest.open("GET", "http://www.nokia.com", true);
xmlHttpRequest.onreadystatechange = function(){
if (xmlHttpRequest.readyState == 4 && xmlHttpRequest.status == 200) {
clearTimeout(timerId);
alert(xmlHttpRequest.responseText);
}
}
xmlHttpRequest.send(null);
timerId = setTimeout(xmlHttpRequestOnTimeOut, timeOutDelay);
function xmlHttpRequestOnTimeOut(){
xmlHttpRequest.abort();
alert("XMLHttpRequest timed out");
}
