servers/src/bin/tcp-client.rs

92 lines
2.0 KiB
Rust

use std::{
io::{self, Read, Write},
net::TcpStream,
sync::Arc,
thread,
};
use clap::Parser;
use servers::server::MAX_PACKET_LEN;
#[derive(Debug, Parser)]
#[clap(
name = "tcp-client",
version = env!("CARGO_PKG_VERSION"),
about = env!("CARGO_PKG_DESCRIPTION")
)]
struct Cli {
#[clap(
short = 'i',
long = "host",
help = "Server host",
default_value = "0.0.0.0",
display_order = 1
)]
host: String,
#[clap(
short = 'p',
long = "port",
help = "Server port",
default_value = "9999",
display_order = 2
)]
port: String,
}
fn main() -> anyhow::Result<()> {
let args = Cli::parse();
let addr = format!("{}:{}", args.host, args.port);
println!("Connecting to {}...", addr);
let stream = TcpStream::connect(addr)?;
println!("Connected!");
let stream = Arc::new(stream);
let reader = stream.clone();
let writer = stream;
// read the output from the server to write to the stdout
thread::spawn(move || {
let mut buf = [0; MAX_PACKET_LEN];
// read buffer from the server
while let Ok(buf_len) = reader.as_ref().read(&mut buf) {
// ignore unused bytes
let buf = &buf[0..buf_len];
// decode buffer from &[u8] to a String
let mut buf_str = String::from_utf8(buf.to_vec()).unwrap();
// delete new line characters from the buffer
buf_str = buf_str.replace('\n', "");
buf_str = buf_str.replace('\r', "");
println!("{}", buf_str);
}
});
// create a new stdin handler
let stdin = io::stdin();
// send command from stdin
loop {
let mut buf = String::new();
// read buffer from stdin
stdin.read_line(&mut buf)?;
// remove new line characters
while buf.ends_with('\n') || buf.ends_with('\r') {
buf.pop();
}
// send the buffer to the server
writer.as_ref().write_all(buf.as_bytes())?;
}
}