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Configurable multistream-select protocol. Add V1Lazy variant. (#1245)

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Make the multistream-select protocol (version) configurable
on transport upgrades as well as for individual substreams.

Add a "lazy" variant of multistream-select 1.0 that delays
sending of negotiation protocol frames as much as possible
but is only safe to use under additional assumptions that
go beyond what is required by the multistream-select v1
specification.
This commit is contained in:
Roman Borschel
2019-09-23 12:04:39 +02:00
committed by GitHub
parent 8c119269d6
commit 73e7878216
29 changed files with 361 additions and 269 deletions
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7
misc/multistream-select/src/lib.rs
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@ -62,7 +62,6 @@
//! yet have sent the last negotiation message despite having settled on a protocol
//! proposed by the dialer that it supports.
//!
//!
//! This behaviour allows both the dialer and the listener to send data
//! relating to the negotiated protocol together with the last negotiation
//! message(s), which, in the case of the dialer only supporting a single
@ -79,7 +78,7 @@
//! ```no_run
//! # fn main() {
//! use bytes::Bytes;
//! use multistream_select::dialer_select_proto;
//! use multistream_select::{dialer_select_proto, Version};
//! use futures::{Future, Sink, Stream};
//! use tokio_tcp::TcpStream;
//! use tokio::runtime::current_thread::Runtime;
@ -91,7 +90,7 @@
//! .from_err()
//! .and_then(move |io| {
//! let protos = vec![b"/echo/1.0.0", b"/echo/2.5.0"];
//! dialer_select_proto(io, protos) // .map(|r| r.0)
//! dialer_select_proto(io, protos, Version::V1)
//! })
//! .map(|(protocol, _io)| protocol);
//!
@ -110,7 +109,7 @@ mod protocol;
mod tests;
pub use self::negotiated::{Negotiated, NegotiatedComplete, NegotiationError};
pub use self::protocol::ProtocolError;
pub use self::protocol::{ProtocolError, Version};
pub use self::dialer_select::{dialer_select_proto, DialerSelectFuture};
pub use self::listener_select::{listener_select_proto, ListenerSelectFuture};