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POWebServices fail because (400) Bad Request because of special character
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  1. POWebServices fail because (400) Bad Request because of special character
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    copied!<p>Using Visual Studio 2008, I setup a client that uses Web Services. It has nothing to do with buffer sizes (as that is a typical response, all appropriate sizes were increased).</p> <p>I was using a List as the parameter of the Method. After much experimentation, I used the System.Net.WebClient to manually create a Soap 1.1 and a Soap 1.2 request to test test the result.</p> <pre><code>using (var webCtx = new System.Net.WebClient()) { webCtx.Headers.Add(System.Net.HttpRequestHeader.ContentType, "text/xml"); webCtx.Headers.Add("SOAPAction", "http://tempuri.org/HelloWorld"); var uri = new Uri("http://localhost:12345/MyProject/WebService.asmx"); MessageBox.Show(webCtx.UploadString(uri, xml)); } </code></pre> <p>Where the xml is a string variable of the xml with actual data. The problem is when one of the fields has a special character. Here is the example of the message body of the xml.</p> <pre><code>&lt;PocoClass&gt; &lt;UnicodeString&gt;&amp;#xE;123&lt;/UnicodeString&gt; &lt;/PocoClass&gt; </code></pre> <p>If the value of UnicodeString was something simple (i.e. 123), but once the special character appeared, I got 400 Bad Request.</p> <p>Now, I have found a Microsoft Knowledge Base Article describing the bug <a href="http://support.microsoft.com/kb/911276/en-us" rel="nofollow noreferrer">kb911276</a>, which basically states, install a hot fix. That really isn't something that can be a solution to the problem, so I was wondering if there are any ideas of how to solve this problem?</p> <p>Are the only solutions to write some sort of custom encoding/decoding or custom bindings to be implemented by the server and client? Are there any easier ideas?</p> <p>Thanks</p> <p><em>Edited:</em> The use of a List is not an issue as it is handled by VS. Here is a more complete (but still partial) contents of the soap message.</p> <pre><code>&lt;HelloWorld xmlns="http://tempuri.org/"&gt; &lt;pocoList&gt; &lt;PocoClass&gt; &lt;UnicodeString&gt;&amp;#xE;123&lt;/UnicodeString&gt; &lt;/PocoClass&gt; &lt;/pocoList&gt; &lt;/HelloWorld&gt; </code></pre>
 

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