Export for a particular combination fails with "Failed-Network error"

[sreeraj-rajendran]

We have an issue while trying to export the data for a specific Tester from a Suite. The export always fails with the message - "Failed-Network error" - this happens in Chrome, but the download also fails in IE and Edge,

The export works fine for other combinations.

Also tried from different network and machines to eliminate network / AV issues.
The browser developer traces and fiddler shows no errors.

I am not a developer, please excuse any mistakes in my queries:
I was able to verify that the code works fine until the below function, and fails on a.click().

function SaveFileDataUri(data, fileName, type) {
    var a = document.body.appendChild(document.createElement("a"));
    a["download"] = fileName;
    a.href = "data:text/" + type + ";base64," + data;
    a.innerHTML = "download";
    a.target = "_blank";
    a.click();
    document.body.removeChild(a);
}

The "data" shows as 4.2 MB.

I am not sure if it is happening because of the direct data transfer.
window.navigator.msSaveOrOpenBlob stays null in the below function, and it chooses to go via SaveFileDataUri(btoa(data), fileName, type);

function SaveFile(data, fileName, type) {
if (window.navigator.msSaveOrOpenBlob != null) {
SaveFileMsBlob(str2bytes(data), fileName, type);
}
else {
SaveFileDataUri(btoa(data), fileName, type);
}
}

Will there be any issues with the SaveFileDataUri method with data sizes around 4.2 MB?

Thanks for the help.

[mattias-skold]

Do you get any file downloaded at all ? Can you poosible share it (by emailing it to [email protected]) ?

Does the tester name contains any "special" characters ?

[sreeraj-rajendran]

Thanks @mattias-skold for checking on this.
No, the file doesn't get downloaded at all. It immediately fails with a "Network error" message.

There are no special characters in the Tester Name.
I am able to export another suite successfully, by filtering with the same Tester.

[mattias-skold]

Could you:

• press F12 in the browser to activate DevTools
• rerun the failing export
• switch back to the devtools window, copy the content of the console tab and share with me (email to [email protected])

[sreeraj-rajendran]

Thanks @mattias-skold. I would probably need to get approvals before sharing that data, I will update you on that. Is there anything that I could do / look with the data from the console to find any possible issues?

Thanks again for the help!

[sreeraj-rajendran]

@mattias-skold , I was checking the solution for this post: https://stackoverflow.com/questions/39374157/angular-save-file-as-csv-result-in-failed-network-error-only-on-chrome

I then tried forcing the download to use a blob, and then the download works fine, and I am able to open the file as well, fine.

I have indicated the code changes with comments below:

function SaveFile(data, fileName, type) {
    if (window.navigator.msSaveOrOpenBlob != null) {
        SaveFileMsBlob(str2bytes(data), fileName, type);
    }
    else {
    // old - SaveFileDataUri(btoa(data), fileName, type);   
	SaveFileDataUri(str2bytes(data), fileName, type);
    }
}
exports.SaveFile = SaveFile;
function SaveFileDataUri(data, fileName, type) {
    var blob = new Blob([data], {type: 'application/vnd.ms-excel'}); //added
    var a = document.body.appendChild(document.createElement("a"));
    a["download"] = fileName;
   //old - a.href = "data:text/" + type + ";base64," + data;
    a.href = window.URL.createObjectURL(blob); //added
    a.innerHTML = "download";
    a.target = "_blank";
    a.click();
    document.body.removeChild(a);
}

Can you please let me know if this could have been an issue with handling the save operation and whether the modifications look good?

Thanks!

[sreeraj-rajendran]

@mattias-skold can you please let me know if you had a chance to check the details shared in the previous post -- thank you very much for the help!

[mattias-skold]

@sreeraj-rajendran I'm not sure what you want me to check ? Overall I think it looks good, but I havent got into details on browser compat issues.

If it works for you - use it. If you submit a PR Ill investigate the browser compat and test it on different browsers and version before accepting the PR.

[sreeraj-rajendran]

Thanks @mattias-skold .
I will try and submit a PR.