socket - socket io - python socket - sockets tutorial - java socket - socks proxy - socket programming

What is socket programming?

• Socket programming is a way of connecting two nodes on a network to communicate with each other.
• One socket(node) listens on a particular port at an IP, while other socket reaches out to the other to form a connection. Server forms the listener socket while client reaches out to the server.

Socket pair

• Specified the two end points that uniquely identifies each TCP connection in an internet.
• 4-tuple: (client IP address, client port number, server IP address, server port number)

Client-server Applications

• Implementation of a protocol standard defined in an RFC. (FTP, HTTP, SMTP…)
  • Conform to the rules dictated by the RFC.
  • Should use the port number associated with the protocol.
• Proprietary client-server application.
  • A single developer( or team) creates both client and server program.
  • The developer has complete control.
  • Must be careful not to use one of the well-known port number defined in the RFCs.

Getting started with socket :

• Create unconnected socket with socket
• How to instantiate a socket class object with socket
• Write to socket a simple http get request with socket

Python TCP socket simple server and client examples with annotation :

• Sample client program with socket
• Sample server program with socket

C++ socket :

• Sample server code with socket

Socket io :

Getting started with Socket io :

• "Hello world!" with socket messages with Socket io
• Installation or Setup with Socket io

Handling users with Socket io :

• Example Server Side code for handling Users with Socket io
• Handling users accessing modals with Socket io
• Simple Way To Emit Messages By User Id with Socket io

Listen to Events :

• Listening to internal and custom events with Socket io

Broadcast :

• Broadcast to all other sockets with Socket io
• Broadcasting to all users with Socket io

Fire Events :

• Fire Custom Events with Socket io

WebSockets:

Getting started with WebSockets :

• Websocket Client example with WebSockets

Differences between WebSockets and AJAX :

• Example getting notification with WebSockets