get text from an HTTP server in rust with cli options

httpget2.rs

use std::env;
use std::net::*;
use std::io::prelude::*;
use getopts::Options;

extern crate getopts;

fn main()
{
	let mut opts = Options::new();
	opts.optflag("h","help","display this help and exit");
	opts.optopt("p","port","use specific port","PORT");
	
	let args:Vec<String>=env::args().collect();
	let program=args[0].clone();
	let matches=opts.parse(&args[1..]).unwrap();
	
	if matches.opt_present("h")
	{
		println!("{}",opts.usage(&format!("{} SERVER[/PATH]\n\nReturns the result of \
		an HTTP request to the server SERVER with an optional\npath of PATH.",
		opts.short_usage(&program))));
		return;
	}

	let port:u16=match matches.opt_str("p")
	{
		Some(x)=>x.parse::<u16>().unwrap(),
		_=>80,
	};
	let ip=if matches.free.len()!=1
	{
		println!("{} SERVER[/PATH]\n\nReturns the result of an HTTP request to\
		the server SERVER with an optional\npath of PATH.",
		opts.short_usage(&program));
		return;
	}
	else
	{
		matches.free[0].split("/").next().unwrap()
	};
	let path:String=matches.free[0].split("/").skip(1).collect();
	
	let mut buf:Box<String>;
	
	let mut stream=TcpStream::connect((ip,port)).unwrap();
	
	let _=stream.write(&format!("GET /{} HTTP/1.0\nHost: {}\n",path,ip).into_bytes());
	
	while
	{
		buf=Box::new(String::new());
		let res=stream.read_to_string(&mut *buf).unwrap();
		print!("{}",*buf);
		res>0
	}{}
	println!("");
}