Merge branch 'Refactor'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
fix video bug
first 100 byte is set to sender.
add sender and type to sending message
Rename
Add flag as attribute.
Anyway, set up videoCl
Merge branch 'master' into develop