by Pieter Brinkman
2. February 2009 09:53
After running WCF on my Vista laptop (IIS7) I needed to deploy the application on some Windows XP computers. Again some strange errors occurred:
[code:html]
Error Description: "This collection already contains an address with scheme http. There can be at most one address per scheme in this collection.
Parameter name: item"
[/code]
The problem is that WCF cannot handle more than one identity (host headers) per website. At first I configured IIS to have one HostHeader. That solution was just to dirty. So I kept on searching the internet.
You can fix this problem by adding prefix-key(s) in the baseAddressPrefixFilters section of the Web.Config:
[code:xml]
<system.serviceModel>
<serviceHostingEnvironment>
<baseAddressPrefixFilters>
<add prefix=”http://www.local.develop”/>
</baseAddressPrefixFilters>
</serviceHostingEnvironment>
</system.serviceModel>
[/code]
Hope this helps.
Sources:
http://geekswithblogs.net/robz/archive/2007/10/02/WCF-in-IIS-with-Websites-that-have-Multiple-Identities.aspx
http://blogs.msdn.com/rampo/archive/2008/02/11/how-can-wcf-support-multiple-iis-binding-specified-per-site.aspx
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