ICM_HTTP_CONNECTION_BROKEN means that the communication partner unexpectedly closed the connection.
One possible cause for the error is that the client is sending HTTP requests to an HTTPS port. In this case the server simply closes the connection.
In many cases the cause of the error lies on the server side.
Please check in the ICM trace file dev_icm which server closes the connection, there should be a corresponding ERROR trace entry.
Then please validate that the port the request is sent to is a valid HTTP or HTTPS port depending on the protocol being used.
If this is the case you need to check for the problem on the server side.
