using fiddler to mock ews streaming notification responses

Hi,

I am currently testing the use of EWS streaming notifications with an app. I would like to test if our app is able to handle partial or incorrect streaming responses. I thought I could use fiddler to mock the responses. But I learned that fiddler accumulates all the streaming notification responses until the connection times out and only then sends them across to our app. Is there a way to configure fiddler to relay the steaming notification soap envelopes as they come without accumulating them? And then is there a way to mock these responses, so that I can simulate partial or incorrect responses.

Thanks

hardlearner