Conceptual Aside: TCP/IP

Big Word

Protocol: A set of rules two sides agree on to use when communicating.

Both the client and server are programmed to understand and use that particular set of rules. It's similar to two people from different countries agreeing on a language to speak in.

Client-Server Model of Computing

  • How to identify each other?

  • There is standard(Protocol), but how are the information actually transferred? (TCP/IP)

  • IP stands for internet protocol (We agree this number is how we connect to other computer)

  • When connect, your system will open a Socket
  • Informations are usually structured into its own type of protocol like HTTP, FTP, SMTP
  • P is protocol, it represents how the information is structured

TCP/IP and socket

TCP: transmittion control protocol (How infos are sent)

  • How matter how your infos are structured, TCP said, split that info into pieces and we will send that pieces one at a time through the socket
  • The individual piece is called a packet
  • We need IP to know where to send them, so we refer them to TCP/IP
  • TCP looks like a stream
  • Node treats there packet come along from the pipe line as chunks
  • Sockets are open and close often
  • Web sockets are to keep the socket open constantly

TCP and information cutting in packets

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