Network.md

Network

Almofire vs. URLSession

Almofire

• Easy to implement features
  • Syntax are a lot easier to use, easier error handling
• Updates of Almofire may cause crashes

TCP/IP

• Application -> Transport -> Internet -> Network Access
• Application
  • Interface with end users
  • Data is formatted, converted, encrypted/decrypted, sent to users
  • Open/Close, manage a session between end user process
• Transport (TCP)
  • Services the application with different ports
  • Reliable end-toend data transport and data stream services (TCP for reliable, UDP for unreliable)
• Internet
  • Providing host addressing
  • Choose the best path to the destinatio network(Routing)
• Network Access
  • Two sublayers:
    • Logical Link Control: provides services to the upper layers
    • Media Access Control: defines how devices access the medium, Token Passing Host addressing(MAC addressing)

OSI

• Application -> Presentation -> Session -> Transport -> Network -> Data Link -> Physical