02. Socket programming

Using nc:

nc host port — connect via TCP (client):

$ nc www.ru 80
GET / HTTP/1.0

Response:

HTTP/1.1 302 Moved Temporarily
Server: nginx/1.5.7
Date: Fri, 17 Apr 2020 15:10:08 GMT
Content-Type: text/html
Connection: close
Location: http://217.112.42.66/404

<html>
<head><title>302 Found</title></head>
<body bgcolor="white">
<center><h1>302 Found</h1></center>
<hr><center>nginx/1.5.7</center>
</body>
</html>

nc -l port — listen to port (server)
- nc -l 1234 from one terminal
- nc 127.0.0.1 1234 from other is a selfish chat
  - 127.0.0.1 is the address of loopback interface (connecting to the same computer)

Tasks:

Make work all lectture examples
- NB: when trying TCP server, use appropriate port not no mess with others
- At sugon server you can invent unused port number by using your UID:
```
   1 $ echo $UID
   2 1058
   3 $ echo 1$UID
   4 11058
   5 
```
  11058 will do

H/W

TODO

HSE/ArchitectureOS/Lab_02_SocketProgramming (последним исправлял пользователь FrBrGeorge 2020-04-27 16:10:19)