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+# Transmat message format
+## ver. 0.1
+
+### Message
+* msgtype (announce, data, confirmation)
+* per_group_id
+* role (send, receive)
+* payload (encrypted payload containing file chunks and service metadata)
+* *TODO - Add protocol version number*
+
+### Payload
+* filename (current filename without path)
+* chunk_size (size of each chunk)
+* chunk_id (number of current chunk)
+* numbr of chunks (total number of chunks in file)
+* chunk (current data)
+* *TODO - Add a hash of the chunk data to use in confirmation messages*
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