I'm running a webapi on an Azure website that makes calls to external web services. The webapi handles approximately 2K-3K requests per minute.
Periodically, lots of socket errors start occurring that indicate: "An attempt was made to access a socket in a way forbidden by its access permissions". This error seems to occur regardless of the ip address of the external web service.
At first, I thought it might be ephemeral port exhaustion, but I've limited "connectionManagement" to a maximum of 100 connections.
What would be causing this?
Thanks very much. Happy to provide whatever information might be helpful.
Update 6/1: - doesn't work per 6/2
I added the following to my web.config system.net section:
<defaultProxy enabled="false" useDefaultCredentials="false">
<proxy/>
<bypasslist/>
<module/>
</defaultProxy>
It appears to have helped as I haven't seen this issue in the last 6 hours. I have no idea why this would actually help though as I'm not using any proxy-related stuff.
Any thoughts?
Update 6/2:
Adding the defaultProxy doesn't actually appear to help. The problem is still occurring. Back to the drawing board.