ImageServer Protocol Connect

Regarding the authentication https://doc.developer.milestonesys.com/html/reference/protocols/imageserver_authenticate.html, if I were to use the TCP way, am I correct to assume I only need to send the Connect request as per:https://doc.developer.milestonesys.com/html/reference/protocols/imageserver_request_response.html ?

Also, I tried the WIndows credentials authentication(SOAP over HTTP login) but I keep receiving EndpointNotFoundException

I’m currently using Milestone Essential+ btw

In c-code you need to authenticate with the Management Server, get a token and use that on the ImageServer protocol.