SCTP, MP-TCP, QUIC

Learn about more transport layer protocols!

sctp 1

message oriented, supports reliable data transfer

sctp 2

multiple independent streams to avoid head of line blocking

sctp 3

different chunk types to support different protocol functions

mp-tcp 1

when applications want a connection between two hosts with different interfaces

mp-tcp 2

creates subflows using individual interfaces to allow better performance

what issues does QUIC fix

head of line blocking, transport layer ossification

quic 1

reliable, connection-oriented, uses multiplexing

quic 2 (how does it overcome ossification?)

runs on top of UDP and uses header and packet protection mechanisms to minimise the amount of information exposed to middleboxes

quic packet type 1

initial, starts the connection

quic packet type 2

0-RTT, initiate connection while sending data

quic packet type 3

handshake, used to maintain cryptographic connection

quic packet type 4

retry, used to request address validation

quic packet type 5

1-RTT, carry data and other frames, short header

quic delivery model

each packet can carry one or more frames, each packet is carried inside a UDP datagram