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POGWT: What to expect when an HTTP request fails
 

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  1. POGWT: What to expect when an HTTP request fails
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    <p>I'm sending an HTTP request with RequestBuilder.send(). I would expect to see successful responses come back in onResponseReceived(), and errors come back in onError(). But that's not what I'm seeing. GWT calls onResponseReceived() regardless of success or failure.</p> <p>Does anyone know what I should really expect? Do you have any information that would help me detect and report errors better?</p> <p>Here's some sample code:</p> <pre><code> builder.sendRequest(null, new RequestCallback() { @Override public void onResponseReceived(Request request, Response response) { Header[] debugHeaders = response.getHeaders(); String debugHeaders1 = response.getHeadersAsString(); int debugStatusCode = response.getStatusCode(); String debugStatusText = response.getStatusText(); String debugText = response.getText(); handleResponse(response); } @Override public void onError(Request request, Throwable exception) { reportError(); } }); </code></pre> <p>I can force an error on my computer by disabling the Wi-Fi. In that case onResponse() is called. getHeaders() returns an array of length 1, with the only entry set to null. getHeadersAsString returns "". getStatusCode returns 0. getStatusText() returns "". getText() returns "".</p> <p>If this is always the case, I can look for that in my code. However, I expect that different browsers, different errors, etc, will cause a different result. Is there any good way to always detect an error?</p> <p>(As long as there are no HTTP problems, my code works fine.)</p>
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    1. USTrade-Ideas Philip
    1. USTrade-Ideas Philip
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    1. COWhat if you throw a RuntimeException in the server code of that service call ?
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    2. COI'm referring to the case where I can't get to the server at all.
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      1. USTrade-Ideas Philip
 

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