For personal test.
Return based on input
- number: return number + 1
- etc: return itself
PORT(required)
$ PORT=65432 cargo run
Finished dev [unoptimized + debuginfo] target(s) in 0.07s
Running `target/debug/tcp-echoserver`
Server listening on 0.0.0.0:65432Run server
$ telnet 0.0.0.0 65432
Trying 0.0.0.0...
Connected to 0.0.0.0.
Escape character is '^]'.
a
a
1
2^CConnection closed by foreign host.