HttpResponseMessage doesn't support multiple entries for the Link header. We use several APIs that specify multiple Link fields which works on .NET but does not work with the Mono implementation.
What seems to happen is the final Link is kept as a single header and overwrites all previous entries.
Comes through as
From a cursory look at the implementation, perhaps the collection here https://github.com/mono/mono/blob/master/mcs/class/System.Net.Http/System.Net.Http.Headers/HttpHeaders.cs
Should include Links as a multi collection, or more generally perhaps any other header field not currently added as a collection should support this by default?
After some further investigation, it looks like the problem is around WebRequest in System.Net, rather than inside HttpHeaders.
This means we see the same behaviour using Microsofts System.Net.Http library whilst it's still using Mono System.Net.
Fixed in master and Mono 4.5.1
Nice - thanks for speedy resolution.
Do you know when this is due for release?