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POCan I modify the Request.Headers collection?
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  1. POCan I modify the Request.Headers collection?
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    copied!<p>I have an ASP.NET site that uses a third-party reporting component. This component is misbehaving by throwing a <code>NullReferenceException</code> whenever the client browser is not specifying a <code>User-Agent</code> in the request headers.</p> <p>It's basically an odd scenario that I'm just trying to come up with a workaround for. I do not know who/what client is not specifying a User-Agent, which seems like bad form IMO, but we have to deal with the exceptions it is generating. I have logged a support ticket with the third-party regarding the bug in their reporting component, but I have my doubts about how fruitful that route is going to be. So my thought was just to detect when the <code>User-Agent</code> is blank and default it to something just to appease the reporting component. However, I can't seem to change anything in the Request.Headers collection. I get the following exception:</p> <pre><code>Operation is not supported on this platform. </code></pre> <p>I'm starting to believe I'm not going to be able to do this. I understand <em>why</em> ASP.NET wouldn't allow this, but I haven't come up with any other workaround.</p> <p><em>Update:</em> At penfold's suggestion, I tried to add the <code>User-Agent</code> to the <code>Request.Headers</code> collection <a href="https://stackoverflow.com/a/4098734/249144">using an <code>HttpModule</code></a>. This got it added to the <code>Headers</code> collection, but did nothing to update the <code>Request.UserAgent</code> property, which is what is causing the reporting component to fail. I've been looking through .NET Reflector to determine how that property is set so that I can update it, but I haven't come up with anything yet (there isn't just a private field that drives the property that I can find).</p>
 

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