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3. Is QUIC designed to natively support communications over multiple paths?
In the current (2019) state of the QUIC specification, the protocol supports a connection migration mechanism that enables a QUIC connection to be maintained in the event of a change to one of the participants' addresses (or port numbers) (including changes to addresses allocated by intermediate NATs). Receipt of a message for a connection in progress is an indication of connection migration. Thus, a connection migration consists in moving from one quadruplet {source address, source port, destination address, destination port} to another.
It is recommended to validate the new address using the PATH_CHALLENGE and PATH_RESPONSE frames exchanged between participants to validate a connection migration.
A QUIC connection is identified by the Connection ID included in the public header of each QUIC packet (figure...
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Is QUIC designed to natively support communications over multiple paths?
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BOUCADAIR (M.) and JACQUENET (C.). – Internet transport: TCP more powerful, more robust, more reliable. Some recent developments in the TCP protocol.
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