Thanks for the answer ! And let's see what will be the answer to the issue you opened. To answer your question : I would like to get the buffer, I process data immediately after. Not saving on the disk is not a problem. In the exemple I gave, it is really waiting for the data that takes time, about 500ms :
self.indiclient.blobEvent.wait()
self.ccd_ccd1[0].getblobdata()
INDI Library: 1.9.8 Code 1.9.8-tgz. Protocol 1.7.