Introducing Network.framework

WWDC 2018

Modernizing transport APIs 👍

Connection Setup

Connection Lifecycle

Smart Connection Estabilshment

Limiting Connection Establishment

Streaming Live Video with UDP

Demo (Server / Client) 👍

Optimizing Data Tansfer

Send

Receive

Advanced Options

Explicit Congestion Notification (ECN)

• ECN negotiation is enabled by default on TCP connection
• Mark ECN flags per packet with UDP

Service Class

• Interface queuing and Cisco Fastlane

Fast Open Connection

• Zero round trip data 👍

Allow Expired DNS Answers

• Remove DNS round trip time 👍

User-Space round Networking

Reacting to Network Transitions

Multipath Connections

• NWParameters.multipathServiceType ( Enable Multipath TCP ) 👍

Watching Interface Changes

• NWPathMonitor ( The current available network interface )
• ( SCNetworkReachability 😡) vs (connection state.waiting 😆)

Discouraged APIs

Preferred APIs