When submitting a large number requests to the CrmService web service, you may occasionally get the error 'Only one usage of each socket address (protocol/network address/port) is normally permitted'. The reason for this is 'socket exhaustion', which is excellently described
here. You are at risk of this happening when over 4000 web requests are submitted within 4 minutes - I find this most commonly on data imports, but have recently met it during heavy user activity on a live CRM system.
There are 2 solutions:
- As suggested in the link above, add registry values to give a much wider range of socket addresses. Note that you need to restart the server for these registry changes to take effect
- Set the UnsafeAuthenticatedConnectionSharing and PreAuthenticate properties of your CrmService (or MetadateService) proxy to true. This will allow your web request to reuse the same socket
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