SQLBulkCopy connection errors when working with SQL Azure

We are currently trying out the SQLBulkCopy API on the new SQL Azure CTP.

While we have been able to consistently migrate tables with about a million rows, we are facing connection errors when working with larger tables. We keep getting (after random row transfers) the following error:

A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)

I understand that SQL Azure connection policies (mentioned here) state that the connection can be terminated for a number of reasons and it also mentions some error codes that are returned.But I am not able to understand which of these might be causing the error or capture the error code.

Is there a way we can get past this error and continue with the migration of table rows?

The SQLBulkCopy options used ar开发者_运维知识库e:

BatchSize=1000

BulkCopyTimeout = 5000

Knowledge Base article 977291 gives this error message as a symptom of a Windows 2003 TCP/IP issue.