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HttpResponseListener.handleHttpResponse is called if no internet connection on gwt

See original GitHub issue

Issue details

If client no internet connection, method Gdx.net.sendHttpRequest(request, listener) not call failed or cancelled. Exception not thrown. Only for GWT. On desktop and android failed method called.

Reproduction steps/code

Send request multiple time (every 5 sec). Turn off internet, responce listener not called failed or cancelled. Exception print in console.

Version of LibGDX and/or relevant dependencies

1.9.10

Stacktrace

net::ERR_INTERNET_DISCONNECTED

of infinity time with timeout.

Please select the affected platforms

Android
iOS
HTML/GWT
Windows
Linux
MacOS

Issue Analytics

State:
Created 3 years ago
Comments:8 (6 by maintainers)

Top GitHub Comments

1reaction

MobiDevelopcommented, Feb 3, 2021

It’s very odd behavior for GWT to call onResponseReceived when no response was, in fact, received. I wouldn’t think that other platforms treat this scenario the same way as they’d likely hit an IOException and call failed.

1reaction

MrStahlfelgecommented, Feb 1, 2021

According to the GWT documentation, onResponseReceived may get called for failed requests with status code 0:

public abstract int getStatusCode()

Returns the HTTP status code that is part of this response.

The value will be 0 if the request failed (e.g. network error, or the server disallowed the request) or has been aborted (this will generally be the case when leaving the page).

We could handle this and call failed() from here with an own exception:

https://github.com/libgdx/libgdx/blob/bc314368a18e0c916437f3dd7b4172714e6abf8b/backends/gdx-backends-gwt/src/com/badlogic/gdx/backends/gwt/GwtNet.java#L163

It would be “more correct”, but a behaviour change. I am not familiar if other platforms might not call handleHttpResponse with status code 0 though - @MobiDevelop @Tom-Ski what’s your opinion on this?

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