protocols/: Add basic AutoNAT implementation

Cargo.toml

@@ -12,6 +12,7 @@ categories = ["network-programming", "asynchronous"]
 
 [features]
 default = [
+    "autonat",
     "deflate",
     "dns-async-std",
     "floodsub",
@@ -34,6 +35,7 @@ default = [
     "websocket",
     "yamux",
 ]
+autonat = ["libp2p-autonat"]
 deflate = ["libp2p-deflate"]
 dns-async-std = ["libp2p-dns", "libp2p-dns/async-std"]
 dns-tokio = ["libp2p-dns", "libp2p-dns/tokio"]
@@ -72,6 +74,8 @@ futures-timer = "3.0.2" # Explicit dependency to be used in `wasm-bindgen` featu
 getrandom = "0.2.3" # Explicit dependency to be used in `wasm-bindgen` feature
 instant = "0.1.11" # Explicit dependency to be used in `wasm-bindgen` feature
 lazy_static = "1.2"
+
+libp2p-autonat = { version = "0.20.0", path = "protocols/autonat", optional = true }
 libp2p-core = { version = "0.31.0", path = "core",  default-features = false }
 libp2p-floodsub = { version = "0.33.0", path = "protocols/floodsub", optional = true }
 libp2p-gossipsub = { version = "0.35.0", path = "./protocols/gossipsub", optional = true }
@@ -119,6 +123,7 @@ members = [
     "misc/peer-id-generator",
     "muxers/mplex",
     "muxers/yamux",
+    "protocols/autonat",
     "protocols/floodsub",
     "protocols/gossipsub",
     "protocols/rendezvous",

protocols/autonat/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "libp2p-autonat"
+edition = "2021"
+rust-version = "1.56.1"
+version = "0.20.0"
+authors = ["David Craven <david@craven.ch>", "Elena Frank <elena.frank@protonmail.com>"]
+license = "MIT"
+repository = "https://github.com/libp2p/rust-libp2p"
+keywords = ["peer-to-peer", "libp2p", "networking"]
+categories = ["network-programming", "asynchronous"]
+
+[build-dependencies]
+prost-build = "0.6"
+
+[dependencies]
+async-trait = "0.1"
+futures = "0.3"
+futures-timer = "3.0.2"
+libp2p-core = { version = "0.31.0", path = "../../core", default-features = false }
+libp2p-swarm = { version = "0.33.0", path = "../../swarm" }
+libp2p-request-response = { version = "0.15.0", path = "../request-response" }
+rand = "0.8"
+prost = "0.8"
+
+[dev-dependencies]
+async-std = { version = "1.10", features = ["attributes"] }
+libp2p = { path = "../../", default-features = false, features = ["dns-async-std", "mplex", "noise", "tcp-async-io", "websocket", "yamux"]}

protocols/autonat/build.rs

@@ -0,0 +1,23 @@
+// Copyright 2020 Parity Technologies (UK) Ltd.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+fn main() {
+    prost_build::compile_protos(&["src/structs.proto"], &["src"]).unwrap();
+}