Created
February 14, 2014 07:51
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//! A simplistic echo server that allows client to exit using the quit command. | |
//! Based on various examples and sources from the internet. | |
#[crate_id = "echo:0.1pre"]; | |
use std::io::{Listener, Acceptor, BufferedStream}; | |
use std::io::net::tcp::TcpListener; | |
use std::io::net::ip::{SocketAddr, Ipv4Addr}; | |
//FIXME: In general, need more error handling. | |
fn main() { | |
let addr = Config { bind_address: SocketAddr { | |
ip: Ipv4Addr(127, 0, 0, 1), | |
port: 9123 } }; | |
let mut acceptor = match TcpListener::bind(addr.bind_address).listen() { | |
Err(err) => { | |
error!("Bind or listen failed: {}", err); | |
return | |
}, | |
Ok(acceptor) => acceptor, | |
}; | |
println!("Listening for connections."); | |
for connection in acceptor.incoming() { | |
match connection { | |
Ok(mut stream) => { | |
spawn(proc() {. | |
//let mut stream = stream; | |
//Error occurs in the below line. | |
let peer_name: ~str = stream.peer_name().unwrap().to_str(); | |
//The println! macro uses the fmt! macro internally. | |
//https://github.com/mozilla/rust/commit/948334f33398f0ba073107585b8dfaa0dc9feaa9 | |
//println!("Client connected: {}", peer_name); | |
//Can also use the println function. Which one of the two is prefered? | |
//stdio::println("Accepted client " + peer_name); | |
//BufferedStream allows for tuning buffer sizes, | |
//but it is not required for this case. | |
let mut stream = BufferedStream::new(stream); | |
loop { | |
match stream.read_line() { | |
Ok(line) => { | |
//If syntax would be much simpler. | |
//Which of the two is the most idiomatic though? | |
match line { | |
//Disconnect the client on the quit command. | |
_ if line.trim() == "quit" => break, | |
//Otherwise we echo everything. | |
_ => { | |
stream.write(line.into_bytes()); | |
stream.flush() | |
}, | |
}; | |
}, | |
Err(err) => continue, //This is a bad thing as some errors are permanent. | |
}; | |
}; | |
//FIXME: do we need to perform a drop here to close to connection properly? | |
//println!("Client disconnected: {}", peer_name) | |
}) | |
}, | |
Err(err) => { | |
debug!("An error occured processing a socket connection: {}", err); | |
continue | |
}, //This is a bad thing as some errors are permanent. | |
}; | |
} | |
} | |
//Will expand this with more configuration options. | |
pub struct Config { | |
bind_address: SocketAddr, | |
} | |
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