Server Side Includes (SSI) adding a blank/empty line to HTML page

by filip 28. August 2008 14:28

While creating a page that used server side includes, I ran into some very strange behavior.  Right before each SSI, a blank line would appear on the page.  It didn't have anything to do with margins or padding.  It was just like an empty line appeared right out of nowhere, messing up the layout.  First, I thought it was some problem with IIS and SSI, but I couldn't find anything there.

After a few hours of frustration and trying the weirdest solutions I could think of, I started playing around with saving the include files with different file names. Well, when I got to the *.txt, I noticed that Visual Studio gives me a new option under "Save As"... its "Advanced Save Options". When I looked at the encoding of the file, it was set to "Unicode (UTF-8 with signature) - Codepage 65000".  I then switched to "Unicode (UTF-8 without signature) - Codepage 65001", and the blank lines disappeared. 

It appears that Visual Studio picks an encoding when saving pages that doesn't really produce desirable effects when using server side includes.  However, you can go to File -> Advanced Save Options and select a different encoding.  I'm not sure how to set the one w/o signature as the default yet, but hopefully soon I'll figure that out :)

Tags: ,

Web Development

Using LoadVars sendAndLoad instead of WebService when calling web services with Flash ActionScript

by filip 14. August 2008 14:53

I've ran into issues using the WebService object in Flash.  The thing is incredibly buggy.  In certain cases, it works just fine, but in other cases, it flat out does not work. In my last case, the web service loaded perfectly fine (onLoad was called), but the PendingCall would not return anything.  The onFault method was never called after I invoked my web service call, but the web service never returned either.  Examining the outgoing messages from Flash (using HTTP headers in Firefox) revealed that Flash was never even attempting to call the web service.  Flash did correctly acquire the crossdomain.xml file (which allowed access from all domains), and it did load the WSDL.  But, for whatever reason, it did not call the web method like it was supposed to.

Well, after a few hours or attempging to make this work, I gave up with the WebService object.  Instead, I went to the LoadVars object, something I'm more confident in than the WebService class, simply due to the fact that it has been around much longer and has had more attention from the Adobe / Macromedia team.

Using the WebService object, my code looked like the following:

var _wsdl:String = "http://www.bloodforge.com/webservice.asmx?WSDL"; // <- this is fake for the purpose of this blog 
var MailService:WebService = new WebService(_wsdl);
MailService.onLoad = function()
{
  var MailServiceResult:PendingCall = MailService.MyMethod("my parameters");
  MailServiceResult.onFault = function(fault)
  {
    trace("it never gets here even though it fails!");
  }
  MailServiceResult.onResult = function(result)
  {
    trace("it never got here either!");
  }
}

The above was replaced with the code below, and it works perfectly fine:

var result_lv:LoadVars = new LoadVars();
result_lv.onData = function(responseStr:String)
{
  if(responseStr == undefined)
  {
    trace("Error occurred!");
  }
  else
  {
    trace("Success... parse my data below...");
  }
}
var send_lv:LoadVars = new LoadVars();
send_lv.myWebServiceParam1 = "param 1";
send_lv.myWebServiceParam2 = "param 2";
send_lv.sendAndLoad("http://www.bloodforge.com/webservice.asmx/MyMethod", result_lv, "POST");

 
Oh, and make sure that if you do this with your web service, that you have the following line in your web.config file.  Otherwise, you won't be able to access it using these methods (you should be familiar w/ it anyways if you use Ajax to call web services).

<webServices>
  <
protocols
>
    <
add name="HttpGet"
/>
    <
add name="HttpPost"
/>
  </
protocols
>
</
webServices>

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Web Development

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About Filip Stanek

Death Note Pic I'm a developer at ACG in Cincinnati, OH. I like ASP.NET, Flash, and other web technologies, & enjoy playing chess, video games, etc.

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