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use super::futures::{Future, Stream};
use super::{
futures, my_copy, ConstructParams, L2rUser, Options, Peer, PeerConstructor, ProgramState,
Session, Specifier, Transfer,
};
use std;
use std::cell::RefCell;
use std::rc::Rc;
use tokio_core::reactor::Handle;
use tokio_io;
impl Session {
pub fn run(self) -> Box<Future<Item = (), Error = Box<std::error::Error>>> {
let once = self.2.one_message;
let co = my_copy::CopyOptions {
stop_on_reader_zero_read: true,
once,
buffer_size: self.2.buffer_size,
};
let f1 = my_copy::copy(self.0.from, self.0.to, co);
let f2 = my_copy::copy(self.1.from, self.1.to, co);
let f1 = f1.and_then(|(_, r, w)| {
info!("Forward finished");
std::mem::drop(r);
tokio_io::io::shutdown(w).map(|w| {
info!("Forward shutdown finished");
std::mem::drop(w);
})
});
let f2 = f2.and_then(|(_, r, w)| {
info!("Reverse finished");
std::mem::drop(r);
tokio_io::io::shutdown(w).map(|w| {
info!("Reverse shutdown finished");
std::mem::drop(w);
})
});
let (unif, unir, eeof) = (
self.2.unidirectional,
self.2.unidirectional_reverse,
self.2.exit_on_eof,
);
type Ret = Box<Future<Item = (), Error = Box<std::error::Error>>>;
match (unif, unir, eeof) {
(false, false, false) => Box::new(
f1.join(f2)
.map(|(_, _)| {
info!("Finished");
})
.map_err(|x| Box::new(x) as Box<std::error::Error>),
) as Ret,
(false, false, true) => Box::new(
f1.select(f2)
.map(|(_, _)| {
info!("One of directions finished");
})
.map_err(|(x, _)| Box::new(x) as Box<std::error::Error>),
) as Ret,
(true, false, _) => Box::new({
::std::mem::drop(f2);
f1.map_err(|x| Box::new(x) as Box<std::error::Error>)
}) as Ret,
(false, true, _) => Box::new({
::std::mem::drop(f1);
f2.map_err(|x| Box::new(x) as Box<std::error::Error>)
}) as Ret,
(true, true, _) => Box::new({
::std::mem::drop(f1);
::std::mem::drop(f2);
futures::future::ok(())
}) as Ret,
}
}
pub fn new(peer1: Peer, peer2: Peer, opts: Rc<Options>) -> Self {
Session(
Transfer {
from: peer1.0,
to: peer2.1,
},
Transfer {
from: peer2.0,
to: peer1.1,
},
opts,
)
}
}
#[cfg_attr(feature = "cargo-clippy", allow(needless_pass_by_value))]
pub fn serve<OE>(
h: Handle,
s1: Rc<Specifier>,
s2: Rc<Specifier>,
opts: Options,
onerror: std::rc::Rc<OE>,
) -> Box<Future<Item = (), Error = ()>>
where
OE: Fn(Box<std::error::Error>) -> () + 'static,
{
info!("Serving {:?} to {:?} with {:?}", s1, s2, opts);
let ps = Rc::new(RefCell::new(ProgramState::default()));
use PeerConstructor::{Overlay1, OverlayM, ServeMultipleTimes, ServeOnce};
let h1 = h.clone();
let e1 = onerror.clone();
let e2 = onerror.clone();
let e3 = onerror.clone();
let opts1 = Rc::new(opts);
let opts2 = opts1.clone();
let l2r = Rc::new(RefCell::new(Default::default()));
let cp1 = ConstructParams {
tokio_handle: h.clone(),
program_options: opts1.clone(),
global_state: ps.clone(),
left_to_right: L2rUser::FillIn(l2r.clone()),
};
let cp2 = ConstructParams {
tokio_handle: h.clone(),
program_options: opts1,
global_state: ps.clone(),
left_to_right: L2rUser::ReadFrom(l2r),
};
let mut left = s1.construct(cp1);
if opts2.oneshot {
left = PeerConstructor::ServeOnce(left.get_only_first_conn());
}
match left {
ServeMultipleTimes(stream) => {
let runner = stream
.map(move |peer1| {
let opts3 = opts2.clone();
let e1_1 = e1.clone();
let cp2 = cp2.clone();
h1.spawn(
s2.construct(cp2)
.get_only_first_conn()
.and_then(move |peer2| {
let s = Session::new(peer1, peer2, opts3);
s.run()
})
.map_err(move |e| e1_1(e)),
)
})
.for_each(|()| futures::future::ok(()));
Box::new(runner.map_err(move |e| e2(e))) as Box<Future<Item = (), Error = ()>>
}
OverlayM(stream, mapper) => {
let runner = stream
.map(move |peer1_| {
debug!("Underlying connection established");
let opts3 = opts2.clone();
let e1_1 = e1.clone();
let s2 = s2.clone();
let h1 = h1.clone();
let cp2 = cp2.clone();
h1.spawn(
mapper(peer1_)
.and_then(move |peer1| {
s2.construct(cp2)
.get_only_first_conn()
.and_then(move |peer2| {
let s = Session::new(peer1, peer2, opts3);
s.run()
})
})
.map_err(move |e| e1_1(e)),
)
})
.for_each(|()| futures::future::ok(()));
Box::new(runner.map_err(move |e| e2(e))) as Box<Future<Item = (), Error = ()>>
}
ServeOnce(peer1c) => {
let runner = peer1c.and_then(move |peer1| {
let right = s2.construct(cp2);
let fut = right.get_only_first_conn();
fut.and_then(move |peer2| {
let s = Session::new(peer1, peer2, opts2);
s.run().map(|()| {
::std::mem::drop(ps)
})
})
});
Box::new(runner.map_err(move |e| e3(e))) as Box<Future<Item = (), Error = ()>>
}
Overlay1(peer1c, mapper) => {
let runner = peer1c.and_then(move |peer1_| {
debug!("Underlying connection established");
mapper(peer1_).and_then(move |peer1| {
let right = s2.construct(cp2);
let fut = right.get_only_first_conn();
fut.and_then(move |peer2| {
let s = Session::new(peer1, peer2, opts2);
s.run().map(|()| {
::std::mem::drop(ps)
})
})
})
});
Box::new(runner.map_err(move |e| e3(e))) as Box<Future<Item = (), Error = ()>>
}
}
}