1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

use crate::{poll::ZmqPoller, FromZmqSocket, Multipart, SocketBuilder};
use zmq::{self, Context as ZmqContext};

/// Create a builder for a REQ socket
pub fn request(context: &ZmqContext) -> SocketBuilder<RequestSender> {
    SocketBuilder::new(context, zmq::SocketType::REQ)
}

/// A REQ Socket returned from the `request` fn
pub struct RequestSender {
    inner: ZmqPoller,
}

impl FromZmqSocket<RequestSender> for RequestSender {
    fn from_zmq_socket(socket: zmq::Socket) -> crate::Result<Self> {
        Ok(Self {
            inner: ZmqPoller::from_zmq_socket(socket)?,
        })
    }
}

impl_as_socket!(RequestSender, inner);

impl RequestSender {
    /// Send a multipart message and return a `RequestReceiver`
    pub async fn send(self, mut msg: Multipart) -> crate::Result<RequestReceiver> {
        futures::future::poll_fn(|cx| self.inner.multipart_flush(cx, &mut msg)).await?;
        Ok(RequestReceiver { inner: self.inner })
    }
}

/// Create a builder for a REP socket
pub fn reply(context: &ZmqContext) -> SocketBuilder<RequestReceiver> {
    SocketBuilder::new(context, zmq::SocketType::REP)
}
/// A `RequestReceiver` is returned After sending a message
pub struct RequestReceiver {
    inner: ZmqPoller,
}

impl FromZmqSocket<RequestReceiver> for RequestReceiver {
    fn from_zmq_socket(socket: zmq::Socket) -> crate::Result<Self> {
        Ok(Self {
            inner: ZmqPoller::from_zmq_socket(socket)?,
        })
    }
}

impl_as_socket!(RequestReceiver, inner);

impl RequestReceiver {
    /// Receive a multipart message and return a `RequestSender`
    pub async fn recv(self) -> crate::Result<(Multipart, RequestSender)> {
        let msg = futures::future::poll_fn(|cx| self.inner.multipart_recv(cx)).await?;
        Ok((msg, RequestSender { inner: self.inner }))
    }
}