С++, TCP/IP

 https://habr.com/ru/post/503432/

https://coderoad.ru/32887310/%D0%9F%D1%80%D0%BE%D1%81%D1%82%D0%BE%D0%B9-%D0%BA%D0%BB%D0%B8%D0%B5%D0%BD%D1%82-%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80-TCP-c

https://www.bogotobogo.com/cplusplus/sockets_server_client.php

https://www.cyberforum.ru/cpp-networks/thread1996810.html

https://www.geeksforgeeks.org/socket-programming-cc/

https://www.geeksforgeeks.org/tcp-server-client-implementation-in-c/

https://github.com/elhayra/tcp_server_client

https://riptutorial.com/cplusplus/example/23999/hello-tcp-server

WebSockets

https://github.com/zaphoyd/websocketpp

https://coderoad.ru/9528811/Websocket-%D0%BA%D0%BB%D0%B8%D0%B5%D0%BD%D1%82-%D0%B2-C

https://stackoverflow.com/questions/9528811/websocket-client-in-c

https://istarik.ru/blog/programmirovanie/73.html

https://docs.websocketpp.org/md_tutorials_utility_client_utility_client.html

https://docs.websocketpp.org/

https://www.boost.org/doc/libs/1_70_0/libs/beast/doc/html/beast/quick_start/websocket_client.html

https://doc.qt.io/qt-5/qtwebsockets-examples.html

https://devblogs.microsoft.com/cppblog/c-rest-sdk-websocket-client/

https://rstudio.github.io/websocket/

node.js TCP/IP

 https://riptutorial.com/node-js/example/22406/a-simple-tcp-client

https://coderoad.ru/12407778/%D0%9F%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D0%B5-%D0%BA-TCP-%D1%81%D0%BE%D0%BA%D0%B5%D1%82%D1%83-%D0%B8%D0%B7-%D0%B1%D1%80%D0%B0%D1%83%D0%B7%D0%B5%D1%80%D0%B0-%D1%81-%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1%8C%D1%8E-javascript

https://gist.github.com/tedmiston/5935757

https://cs.lmu.edu/~ray/notes/jsnetexamples/

https://overcoder.net/q/9523/%D0%BF%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D0%B5-%D0%BA-tcp-%D1%81%D0%BE%D0%BA%D0%B5%D1%82%D1%83-%D0%B8%D0%B7-%D0%B1%D1%80%D0%B0%D1%83%D0%B7%D0%B5%D1%80%D0%B0-%D1%81-%D0%BF%D0%BE%D0%BC%D0%BE%D1%89%D1%8C%D1%8E-javascript

https://www.xspdf.com/resolution/50670392.html

https://qastack.ru/programming/12407778/connecting-to-tcp-socket-from-browser-using-javascript

https://www.xspdf.com/resolution/50670392.html

https://www.digitalocean.com/community/tutorials/how-to-develop-a-node-js-tcp-server-application-using-pm2-and-nginx-on-ubuntu-16-04

https://riptutorial.com/node-js/example/22406/a-simple-tcp-client

TCP parts

Connection

Sockets
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.socket.connectasync?view=netcore-3.1
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.socketasynceventargs?view=netcore-3.1
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.socket.connectasync?view=netcore-3.1

TcpClient
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.tcpclient.connect?view=netcore-3.1
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.tcpclient.connectasync?view=netcore-3.1

TCP vs UDP

https://www.youtube.com/watch?v=Vdc8TCESIg8

https://www.youtube.com/watch?v=EkNq4TrHP_U

Lua sockets

https://ilovelua.wordpress.com/%D0%BF%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87%D0%B0-%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85-%D0%BF%D0%BE-%D1%81%D0%B5%D1%82%D0%B8-%D1%81-luasocket/

https://stackoverflow.com/questions/42783263/lua-tcp-ip-simple-client-server-connection

http://w3.impa.br/~diego/software/luasocket/introduction.html

https://github.com/diegonehab/luasocket/tree/master/samples

https://www.lua.org/pil/9.4.html

https://coronalabs.com/blog/2014/09/23/tutorial-local-multiplayer-with-udptcp/

https://realtimelogic.com/ba/doc/en/lua/SockLib.html

http://lua-users.org/lists/lua-l/2011-03/msg00184.html

Video
https://www.youtube.com/watch?v=qVWOaRYpli0

https://www.youtube.com/watch?v=JtuwmPC0PdE

https://www.youtube.com/watch?v=jREbAopWqKU

tcp/ip examoles

https://gist.github.com/jkingry/958955/4c9038702d1b942aea3f8eeb497948e2ba084202

https://stackoverflow.com/questions/43096943/how-to-stop-reading-from-networkstream

https://stackoverflow.com/questions/21792461/when-does-tcpclients-networkstream-finish-one-read-operation

https://stackoverflow.com/questions/15038612/how-to-end-networkstream-read-safely-in-c-sharp-or-vb-net

https://stackoverflow.com/questions/32823256/how-do-network-networkstream-read-and-networkstream-write-act-in-tcp-client

BinaryRead
https://metanit.com/sharp/net/6.1.php

Javascript TCP/IP Sockets

https://stackoverflow.com/questions/12407778/connecting-to-tcp-socket-from-browser-using-javascript

TCP/IP, TaskTimeout

https://stackoverflow.com/questions/17118632/how-to-set-the-timeout-for-a-tcpclient

https://stackoverflow.com/questions/25683980/timeout-pattern-on-task-based-asynchronous-method-in-c-sharp/25684549#25684549


HeartBeat
https://stackoverflow.com/questions/3121598/tcpclient-communication-with-server-to-keep-alive-connection-in-c

https://stackoverflow.com/questions/865987/do-i-need-to-heartbeat-to-keep-a-tcp-connection-open

https://stackoverflow.com/questions/34456104/display-message-when-tcpclient-disconnects

Keep Alive
https://stackoverflow.com/questions/169170/what-is-the-best-way-to-do-keep-alive-socket-checking-in-net

Async Socket
https://www.codeguru.com/csharp/csharp/cs_misc/sampleprograms/article.php/c7695/Asynchronous-Socket-Programming-in-C-Part-I.htm

https://docs.microsoft.com/en-us/dotnet/framework/network-programming/asynchronous-server-socket-example?redirectedfrom=MSDN

https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.socket.beginreceive?view=netframework-4.8

https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.socket.endreceive?view=netframework-4.8

ReadFromNetworkStream
https://stackoverflow.com/questions/22465102/c-sharp-read-all-bytes

tcp/ip sockets

https://docs.microsoft.com/ru-ru/dotnet/framework/network-programming/asynchronous-server-socket-example

https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.tcplistener?view=netframework-4.8#definition

https://docs.microsoft.com/ru-ru/dotnet/framework/network-programming/using-an-asynchronous-server-socket

https://www.winsocketdotnetworkprogramming.com/clientserversocketnetworkcommunication8o.html

https://habr.com/ru/post/327574/

TcpClient Class 
https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.tcpclient?view=netframework-4.8

TcpClient
https://metanit.com/sharp/net/4.1.php

https://professorweb.ru/my/csharp/web/level4/4_2.php

http://zetcode.com/csharp/tcpclient/

https://wm-help.net/lib/b/book/656723049/312

http://streletzcoder.ru/obmen-dannyimi-po-seti-v-c-protokol-tcp/

http://www.java2s.com/Code/CSharp/Network/TcpClientSample.htm

https://www.codeproject.com/Articles/1415/Introduction-to-TCP-client-server-in-C

https://stackoverflow.com/questions/3609280/sending-and-receiving-data-over-a-network-using-tcpclient

https://blog.stephencleary.com/2009/04/tcpip-net-sockets-faq.html

https://www.winsocketdotnetworkprogramming.com/clientserversocketnetworkcommunication8q.html

Example
https://stackoverflow.com/questions/43140949/tcplistener-send-heartbeat-every-5-seconds-and-read-message-from-client-async

https://stackoverflow.com/questions/865987/do-i-need-to-heartbeat-to-keep-a-tcp-connection-open

https://stackoverflow.com/questions/495922/what-is-the-best-way-to-implement-a-heartbeat-in-c-to-check-for-socket-connect

https://stackoverflow.com/questions/10281622/how-to-check-the-connection-state-of-a-tcp-server-socket-with-tcp-client-in-vb

https://stackoverflow.com/questions/3121598/tcpclient-communication-with-server-to-keep-alive-connection-in-c

NetworkStream

https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.networkstream?view=netframework-4.8#properties

NetworkStream.ReadTimeout

https://docs.microsoft.com/ru-ru/dotnet/api/system.net.sockets.networkstream.readtimeout?view=netframework-4.8#System_Net_Sockets_NetworkStream_ReadTimeout

Transport

https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/choosing-a-transport