RPC and serialization

Socket and RPC implement.

Implement can be seen there.

Socket

using TCP

• TCP (Transmission Control Protocol) is a standard that defines how to establish and maintain a network conversation via which application programs can exchange data.

In Java

• need java.net.Socket and java.net.ServerSocket
• create Server and Client Models

Using UDP

• UDP (User Datagram Protocol) is an alternative communications protocol to Transmission Control Protocol (TCP) used primarily for establishing low-latency and loss-tolerating connections between applications on the internet.

In Java

• need java.net.*
• using DatagramPacket and DatagramSocket

RPC

• Remote Procedure Call，a pro
  • computer program causes a procedure (subroutine) to execute in a different address space (commonly on another computer on a shared network), which is coded as if it were a normal (local) procedure call, without the programmer explicitly coding the details for the remote interaction.
  • Procedure：Client
  • Callee procedure：Server
  • Function or Method：Service
• call remote function (Method) Behavior like local call
• 
• How to call function using function name?
  • reflect
  • Proxy

Server

• need a thread of this method to wait for response from client(service)
• need the class implement
• need a interface to register this service

Client

• need the interface of class needed
• need a new Proxy Instance to proxy this method for client

Serialization

Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file.

module

• IDL（Interface description language）文件
  • 参与通讯的各方需要对通讯的内容需要做相关的约定
• IDL Compiler
  • 将IDL文件转换成各语言对应的动态库
• Stub/Skeleton Lib
  • 负责序列化和反序列化的工作代码
• Client/Server
  • 指的是应用层程序代码
• 底层协议栈和互联网

Protocol

• XML
• JSON
• Protobuf
• Thrift
• Avro

Reference

• reflect in Java
• anonymous inner class
• Proxy in Java
• abstract and interface
• thread start() and runnable