Browser fires request twice to image handler

Question

I am working on a web application. Some images are calling a web provider, which renders the picture, and send it to the client (the html looks like img ... src="/WebProviders/ImageHandler.ashx?.../>).

The problem I have encountered is that both IE8 and Firefox 3.6.8 fire the request to the handler more than once, yet not consistently. I could not trace a pattern (the same image sometimes cause one and sometimes several requests).

Answer 1

Have you used a product like Fiddler to view the HTTP traffic from the web page to the server, that will allow you to see if that is firing two requests to the handler.