Chat java

Tổng hợp:
https://lanhlala.wordpress.com/2017/11/01/how-to-buil-chat-application-using-java-socket-tcpip-udp/

Lập trình java:
http://www.coderpanda.com/java-socket-programming-using-tcp/
http://mymicrocode.com/client-server-chat-program-in-java-using-tcpip/
https://www.geeksforgeeks.org/socket-programming-in-java/
https://www.codeproject.com/Articles/8725/A-simple-TCP-IP-Chat-client-server

Documents, research:
http://www.uoitc.edu.iq/ijci1/vol44issue1/7-DesignandImplementChatProgramUsingTCPIP.pdf?fbclid=IwAR0smuOeyupHseDYAYJUj7TSq_Rbfx_2jAPvbzgwY4LjZRqDOnAJ5Qj-4-o
(ở phần reference của cái này cũng có vài tài liệu tham khảo)

http://www.diva-portal.org/smash/get/diva2:524732/FULLTEXT01.pdfIT

https://en.wikipedia.org/wiki/Comparison_of_instant_messaging_protocols?fbclid=IwAR1yIMhE0rtiw7v_k5RIT-l4FmZjJq7CtYcYYOTFOerCcU2CSlHcgHigfu0