updated README.md

Rewrote the configuration options to make Diplonat modular: IGD and Firewall modules will only be enabled if correponding DIPLONAT_*_ENABLE is set. (Breaking changes!)
Also rearranged imports throughout the project, because I couldn't resist, sorry.
2021-08-26 16:17:37 +02:00 · 2021-08-26 16:05:39 +02:00
25 changed files with 1205 additions and 5664 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,5 +1,3 @@
-target
+target/
 result
 result-bin
 *.swp
 .env
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@ -1,26 +0,0 @@
 when:
  event:
  - push
  - pull_request
  - tag
  - cron
  - manual
 steps:
  - name: check formatting
    image: nixpkgs/nix:nixos-22.05
    environment:
      NIX_PATH: 'nixpkgs=channel:nixos-22.05'
    commands:
      - nix-shell -p cargo -p rustfmt --run 'cargo fmt -- --check'
  - name: build
    image: nixpkgs/nix:nixos-22.05
    commands:
      - nix build --extra-experimental-features nix-command --extra-experimental-features flakes .#debug.x86_64-linux.diplonat
  - name: test
    image: nixpkgs/nix:nixos-22.05
    commands:
      - nix build --extra-experimental-features nix-command --extra-experimental-features flakes .#test.x86_64-linux.diplonat
      - ./result-bin/bin/diplonat-*
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -1,45 +0,0 @@
 # Contributing to Diplonat 
 ## Development guidelines
 ### Code formatting 
 [Our CI pipeline](./.drone.yml) features a verification of the code format, using [rustfmt](https://github.com/rust-lang/rustfmt).
 #### Installing rustfmt
 You must install a very recent version of `rustfmt` through rust nightly
 To install: 
 ```
 rustup toolchain install nightly-x86_64-unknown-linux-gnu
 rustup component add rustfmt --toolchain nightly
 ```
 #### Usage 
 To run on Diplonat, launch the following in the root directory:
 ```
 cargo +nightly fmt
 ``` 
 This will format the whole repository using the settigs defined in [`.rustfmt.toml`](./.rustfmt.toml).
 #### Auto-format code
 You can automate formatting in a number of ways:
 [Setup your IDE to use `rustfmt`](https://github.com/rust-lang/rustfmt#running-rustfmt-from-your-editor).
 Setup a git hook to run `rustfmt` before each commit:
 ```bash
 cat <<EOF > .git/hooks/pre-commit
 #!/bin/bash
 cargo +nightly fmt
 EOF
 chmod +x .git/hooks/pre-commit
 ```
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.nix
+++ b/Cargo.nix
--- a/Cargo.toml
+++ b/Cargo.toml
@ -10,15 +10,13 @@ edition = "2018"
 anyhow = "1.0.28"
 envy = "0.4"
 futures = "0.3.5"
-get_if_addrs = "0.5"
+igd = { version = "0.10.0", features = ["aio"] }
 igd = { version = "0.12.0", features = ["aio"] }
 iptables = "0.2.2"
 log = "0.4"
 pretty_env_logger = "0.4"
 regex = "1"
-reqwest = { version = "0.11", default-features = false, features = ["json", "rustls-tls-manual-roots" ] }
+reqwest = { version = "0.10", features = ["json"] }
 serde = { version = "1.0.107", features = ["derive"] }
 serde-lexpr = "0.1.1"
 serde_json = "1.0.53"
-tokio = { version = "1", features = ["sync", "rt-multi-thread", "net", "macros"] }
+tokio = "0.2"
 stun-client = "0.1.2"
--- a/4
+++ b/4
@ -1,7 +1,7 @@
-FROM rust:1.69-bullseye as builder
+FROM debian:bullseye-slim as builder
 RUN apt-get update && \
-    apt-get install -y libssl-dev pkg-config
+    apt-get install -y rustc cargo libssl-dev pkg-config
 WORKDIR /srv
--- a/661
+++ b/661
@ -1,661 +0,0 @@
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 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
 GNU Affero General Public License, you may choose any version ever published
 by the Free Software Foundation.
  If the Program specifies that a proxy can decide which future
 versions of the GNU Affero General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
  Later license versions may give you additional or different
 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If your software can interact with users remotely through a computer
 network, you should also make sure that it provides a way for users to
 get its source.  For example, if your program is a web application, its
 interface could display a "Source" link that leads users to an archive
 of the code.  There are many ways you could offer source, and different
 solutions will be better for different programs; see section 13 for the
 specific requirements.
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
--- a/README.md
+++ b/README.md
@ -1,8 +1,6 @@
 Diplonat
 ========
 [![status-badge](https://woodpecker.deuxfleurs.fr/api/badges/40/status.svg)](https://woodpecker.deuxfleurs.fr/repos/40)
 ## Feature set
 * [X] (Re)Configure NAT via UPNP/IGD (prio: high)  
@ -42,18 +40,17 @@ cargo build
 consul agent -dev # in a separate terminal
 # adapt following values to your configuration
 export DIPLONAT_PRIVATE_IP="192.168.0.18"
 export DIPLONAT_REFRESH_TIME="60"
 export DIPLONAT_EXPIRATION_TIME="300"
 export DIPLONAT_CONSUL_NODE_NAME="lheureduthe"
 export DIPLONAT_FIREWALL_ENABLE="true"
 export DIPLONAT_FIREWALL_REFRESH_TIME="300"
 export DIPLONAT_IGD_ENABLE="true"
 export DIPLONAT_IGD_PRIVATE_IP="192.168.0.18"
 export DIPLONAT_IGD_REFRESH_TIME="60"
 export DIPLONAT_IGD_EXPIRATION_TIME="300"
 export RUST_LOG=debug
 cargo run
 ```
 ## Contributing
 Refer to [CONTRIBUTING.md](./CONTRIBUTING.md).
 ## Design Guidelines
 Diplonat is made of a set of Components.
@ -88,7 +85,3 @@ consul services register -name=fake_dns  -tag="(diplonat (udp_port 53) (tcp_port
 consul services register -name=fake_irc  -tag="(diplonat (udp_port 6667 6666))"
 consul services -id=example
 ```
 ## License
 This software is published under the AGPLv3 license.
--- a/docker-compose.yml
+++ b/docker-compose.yml
@ -5,10 +5,13 @@ services:
    image: darkgallium/amd64_diplonat:v2
    network_mode: host # required by UPNP/IGD
    environment:
      DIPLONAT_PRIVATE_IP: 192.168.0.18
      DIPLONAT_REFRESH_TIME: 60
      DIPLONAT_EXPIRATION_TIME: 300
      DIPLONAT_CONSUL_NODE_NAME: lheureduthe
      DIPLONAT_FIREWALL_ENABLE: true
      DIPLONAT_FIREWALL_REFRESH_TIME: 60
      DIPLONAT_IGD_ENABLE: true
      DIPLONAT_IGD_PRIVATE_IP: 192.168.0.18
      DIPLONAT_IGD_EXPIRATION_TIME: 300
      DIPLONAT_IGD_REFRESH_TIME: 60
      RUST_LOG: debug
--- a/flake.lock
+++ b/flake.lock
@ -1,108 +0,0 @@
 {
  "nodes": {
    "cargo2nix": {
      "inputs": {
        "flake-compat": "flake-compat",
        "flake-utils": "flake-utils",
        "nixpkgs": [
          "nixpkgs"
        ],
        "rust-overlay": "rust-overlay"
      },
      "locked": {
        "lastModified": 1666087781,
        "narHash": "sha256-trKVdjMZ8mNkGfLcY5LsJJGtdV3xJDZnMVrkFjErlcs=",
        "owner": "Alexis211",
        "repo": "cargo2nix",
        "rev": "a7a61179b66054904ef6a195d8da736eaaa06c36",
        "type": "github"
      },
      "original": {
        "owner": "Alexis211",
        "repo": "cargo2nix",
        "rev": "a7a61179b66054904ef6a195d8da736eaaa06c36",
        "type": "github"
      }
    },
    "flake-compat": {
      "flake": false,
      "locked": {
        "lastModified": 1650374568,
        "narHash": "sha256-Z+s0J8/r907g149rllvwhb4pKi8Wam5ij0st8PwAh+E=",
        "owner": "edolstra",
        "repo": "flake-compat",
        "rev": "b4a34015c698c7793d592d66adbab377907a2be8",
        "type": "github"
      },
      "original": {
        "owner": "edolstra",
        "repo": "flake-compat",
        "type": "github"
      }
    },
    "flake-utils": {
      "locked": {
        "lastModified": 1659877975,
        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
        "owner": "numtide",
        "repo": "flake-utils",
        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
        "type": "github"
      },
      "original": {
        "owner": "numtide",
        "repo": "flake-utils",
        "type": "github"
      }
    },
    "nixpkgs": {
      "locked": {
        "lastModified": 1665657542,
        "narHash": "sha256-mojxNyzbvmp8NtVtxqiHGhRfjCALLfk9i/Uup68Y5q8=",
        "owner": "NixOS",
        "repo": "nixpkgs",
        "rev": "a3073c49bc0163fea6a121c276f526837672b555",
        "type": "github"
      },
      "original": {
        "owner": "NixOS",
        "repo": "nixpkgs",
        "rev": "a3073c49bc0163fea6a121c276f526837672b555",
        "type": "github"
      }
    },
    "root": {
      "inputs": {
        "cargo2nix": "cargo2nix",
        "nixpkgs": "nixpkgs"
      }
    },
    "rust-overlay": {
      "inputs": {
        "flake-utils": [
          "cargo2nix",
          "flake-utils"
        ],
        "nixpkgs": [
          "cargo2nix",
          "nixpkgs"
        ]
      },
      "locked": {
        "lastModified": 1664247556,
        "narHash": "sha256-J4vazHU3609ekn7dr+3wfqPo5WGlZVAgV7jfux352L0=",
        "owner": "oxalica",
        "repo": "rust-overlay",
        "rev": "524db9c9ea7bc7743bb74cdd45b6d46ea3fcc2ab",
        "type": "github"
      },
      "original": {
        "owner": "oxalica",
        "repo": "rust-overlay",
        "type": "github"
      }
    }
  },
  "root": "root",
  "version": 7
 }
--- a/flake.nix
+++ b/flake.nix
@ -1,36 +0,0 @@
 {
  description = "A very basic flake";
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/a3073c49bc0163fea6a121c276f526837672b555";
  inputs.cargo2nix = {
    # As of 2022-10-18: two small patches over unstable branch, one for clippy and one to fix feature detection
    url = "github:Alexis211/cargo2nix/a7a61179b66054904ef6a195d8da736eaaa06c36";
    inputs.nixpkgs.follows = "nixpkgs";
  };
  outputs = { self, nixpkgs, cargo2nix }:
  let
    pkgs = import nixpkgs {
      system = "x86_64-linux";
      overlays = [ cargo2nix.overlays.default ];
    };
    packageFun = import ./Cargo.nix;
    rustVersion = "1.63.0";
    compile = args: compileMode:
      let
        packageSet = pkgs.rustBuilder.makePackageSet ({
          inherit packageFun rustVersion;
        } // args);
      in
        packageSet.workspace.diplonat {
          inherit compileMode;
        };
  in
  {
    test.x86_64-linux.diplonat = compile { release = false; } "test";
    debug.x86_64-linux.diplonat = compile { release = false; } "build";
    packages.x86_64-linux.diplonat = compile { release = true; } "build";
    packages.x86_64-linux.default = self.packages.x86_64-linux.diplonat;
  };
 }
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@ -3,12 +3,9 @@ mod options;
 mod options_test;
 mod runtime;
-pub use options::{ConfigOpts, ConfigOptsBase, ConfigOptsConsul};
+pub use options::{ConfigOpts, ConfigOptsConsul, ConfigOptsAcme, ConfigOptsFirewall, ConfigOptsIgd};
-pub use runtime::{
+pub use runtime::{RuntimeConfig, RuntimeConfigAcme, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd};
    RuntimeConfig, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd, RuntimeConfigStun,
 };
 pub const EXPIRATION_TIME: u16 = 300;
 pub const REFRESH_TIME: u16 = 60;
 pub const CONSUL_URL: &str = "http://127.0.0.1:8500";
 pub const STUN_SERVER: &str = "stun.nextcloud.com:443";
--- a/src/config/options.rs
+++ b/src/config/options.rs
@ -8,70 +8,97 @@ use crate::config::RuntimeConfig;
 // This file parses the options that can be declared in the environment.
 // runtime.rs applies business logic and builds RuntimeConfig structs.
-/// Base configuration options
+// - Note for the future -
-#[derive(Clone, Default, Deserialize)]
+// There is no *need* to have a 'DIPLONAT_XXX_*' prefix for all config options.
-pub struct ConfigOptsBase {
+// If some config options are shared by several modules, a ConfigOptsBase could
-    /// This node's private IP address [default: None]
+// contain them, and parse the 'DIPLONAT_*' prefix directly.
-    pub private_ip: Option<String>,
+// Only in runtime.rs would these options find their proper location in each 
-    /// Expiration time for IGD rules [default: 60]
+// module's struct.
-    pub expiration_time: Option<u16>,
+
    /// Refresh time for IGD and Firewall rules [default: 300]
    pub refresh_time: Option<u16>,
    /// STUN server [default: stun.nextcloud.com:443]
    pub stun_server: Option<String>,
    /// IPv6-only mode (disables IGD, IPv4 firewall and IPv4 address autodiscovery) [default: false]
    #[serde(default)]
    pub ipv6_only: bool,
 }
 /// Consul configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsConsul {
-    /// Consul's node name [default: None]
+	/// Consul's node name [default: None]
-    pub node_name: Option<String>,
+	pub node_name: Option<String>,
-    /// Consul's REST URL [default: "http://127.0.0.1:8500"]
+	/// Consul's REST URL [default: "http://127.0.0.1:8500"]
-    pub url: Option<String>,
+	pub url: Option<String>,
-    /// Consul's CA certificate [default: None]
+}
-    pub ca_cert: Option<String>,
+
-    /// Skip TLS verification for Consul server [default: false]
+/// ACME configuration options
-    #[serde(default)]
+#[derive(Clone, Default, Deserialize)]
-    pub tls_skip_verify: bool,
+pub struct ConfigOptsAcme {
-    /// Consul's client certificate [default: None]
+	/// Whether the ACME module is enabled [default: false]
-    pub client_cert: Option<String>,
+	#[serde(default)]
-    /// Consul's client key [default: None]
+	pub enable: bool,
-    pub client_key: Option<String>,
+
 	/// The default domain holder's e-mail [default: None]
 	pub email: Option<String>,
 }
 /// Firewall configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsFirewall {
 	/// Whether the firewall module is enabled [default: false]
 	#[serde(default)]
 	pub enable: bool,
 	/// Refresh time for firewall rules [default: 300]
 	pub refresh_time: Option<u16>,
 }
 /// IGD configuration options
 #[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsIgd {
 	/// Whether the IGD module is enabled [default: false]
 	#[serde(default)]
 	pub enable: bool,
 	/// This node's private IP address [default: None]
 	pub private_ip: Option<String>,
 	/// Expiration time for IGD rules [default: 60]
 	pub expiration_time: Option<u16>,
 	/// Refresh time for IGD rules [default: 300]
 	pub refresh_time: Option<u16>,
 }
 /// Model of all potential configuration options
 pub struct ConfigOpts {
-    pub base: ConfigOptsBase,
+	pub consul: ConfigOptsConsul,
-    pub consul: ConfigOptsConsul,
+	pub acme: ConfigOptsAcme,
 	pub firewall: ConfigOptsFirewall,
 	pub igd: ConfigOptsIgd,
 }
 impl ConfigOpts {
-    pub fn from_env() -> Result<RuntimeConfig> {
+	pub fn from_env() -> Result<RuntimeConfig> {
-        let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_env()?;
+		let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?;
-        let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?;
+		let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_env()?;
 		let firewall: ConfigOptsFirewall = envy::prefixed("DIPLONAT_FIREWALL_").from_env()?;
 		let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_env()?;
-        RuntimeConfig::new(Self {
+		RuntimeConfig::new(Self {
-            base: base,
+			consul,
-            consul: consul,
+			acme,
-        })
+			firewall,
-    }
+			igd,
 		})
 	}
-    // Currently only used in tests
+	// Currently only used in tests
-    #[cfg(test)]
+	#[allow(dead_code)]
-    pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig>
+	pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig>
-    where
+	where Iter: IntoIterator<Item = (String, String)> {
-        Iter: IntoIterator<Item = (String, String)>,
+		let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?;
-    {
+		let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_iter(iter.clone())?;
-        let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_iter(iter.clone())?;
+		let firewall: ConfigOptsFirewall = envy::prefixed("DIPLONAT_FIREWALL_").from_iter(iter.clone())?;
-        let consul: ConfigOptsConsul =
+		let igd: ConfigOptsIgd = envy::prefixed("DIPLONAT_IGD_").from_iter(iter.clone())?;
            envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?;
-        RuntimeConfig::new(Self {
+		RuntimeConfig::new(Self {
-            base: base,
+			consul,
-            consul: consul,
+			acme,
-        })
+			firewall,
-    }
+			igd,
 		})
 	}
 }
--- a/src/config/options_test.rs
+++ b/src/config/options_test.rs
@ -1,4 +1,5 @@
-use std::{collections::HashMap, time::Duration};
+use std::collections::HashMap;
 use std::time::Duration;
 use crate::config::*;
@ -9,111 +10,136 @@ use crate::config::*;
 // This is why we only test ConfigOpts::from_iter(iter).
 fn minimal_valid_options() -> HashMap<String, String> {
-    let mut opts = HashMap::new();
+	let mut opts = HashMap::new();
-    opts.insert(
+    opts.insert("DIPLONAT_CONSUL_NODE_NAME".to_string(), "consul_node".to_string());
        "DIPLONAT_CONSUL_NODE_NAME".to_string(),
        "consul_node".to_string(),
    );
    opts
 }
 fn all_valid_options() -> HashMap<String, String> {
-    let mut opts = minimal_valid_options();
+	let mut opts = minimal_valid_options();
-    opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "30".to_string());
+    opts.insert("DIPLONAT_CONSUL_URL".to_string(), "http://127.0.0.1:9999".to_string());
-    opts.insert(
+	opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
-        "DIPLONAT_STUN_SERVER".to_string(),
+	opts.insert("DIPLONAT_ACME_EMAIL".to_string(), "bozo@bozo.net".to_string());
-        "stun.nextcloud.com:443".to_string(),
+	opts.insert("DIPLONAT_FIREWALL_ENABLE".to_string(), "true".to_string());
-    );
+	opts.insert("DIPLONAT_FIREWALL_REFRESH_TIME".to_string(), "20".to_string());
-    opts.insert(
+	opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
-        "DIPLONAT_PRIVATE_IP".to_string(),
+	opts.insert("DIPLONAT_IGD_PRIVATE_IP".to_string(), "172.123.43.555".to_string());
-        "172.123.43.55".to_string(),
+	opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
-    );
+	opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "10".to_string());
    opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "10".to_string());
    opts.insert(
        "DIPLONAT_CONSUL_URL".to_string(),
        "http://127.0.0.1:9999".to_string(),
    );
    opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
    opts.insert(
        "DIPLONAT_ACME_EMAIL".to_string(),
        "bozo@bozo.net".to_string(),
    );
    opts
 }
 // #[test]
 // #[should_panic]
 // fn err_empty_env() {
 // 	 std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
 // 	 ConfigOpts::from_env().unwrap();
 // }
 #[test]
 #[should_panic]
 fn err_empty_env() {
-    std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
+	std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
-    ConfigOpts::from_env().unwrap();
+	let opts: HashMap<String, String> = HashMap::new();
 	ConfigOpts::from_iter(opts).unwrap();
 }
 #[test]
-fn ok_from_iter_minimal_valid_options() {
+fn ok_minimal_valid_options() {
-    let opts = minimal_valid_options();
+	let opts = minimal_valid_options();
-    let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
+	let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
-    assert_eq!(
+	assert_eq!(
-        &rt_config.consul.node_name,
+		&rt_config.consul.node_name, 
-        opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
+		opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
-    );
+	);
-    assert_eq!(rt_config.consul.url, CONSUL_URL.to_string());
+	assert_eq!(
-    assert_eq!(
+		rt_config.consul.url, 
-        rt_config.firewall.refresh_time,
+		CONSUL_URL.to_string()
-        Duration::from_secs(REFRESH_TIME.into())
+	);
-    );
+	assert!(rt_config.acme.is_none());
-    let igd = rt_config.igd.unwrap();
+	assert!(rt_config.firewall.is_none());
-    assert!(igd.private_ip.is_none());
+	assert!(rt_config.igd.is_none());
-    assert_eq!(
+	/*assert_eq!(
-        igd.expiration_time,
+		rt_config.firewall.refresh_time,
-        Duration::from_secs(EXPIRATION_TIME.into())
+		Duration::from_secs(REFRESH_TIME.into())
-    );
+	);
-    assert_eq!(igd.refresh_time, Duration::from_secs(REFRESH_TIME.into()));
+	assert_eq!(
 		&rt_config.igd.private_ip,
 		opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
 	);
 	assert_eq!(
 		rt_config.igd.expiration_time,
 		Duration::from_secs(EXPIRATION_TIME.into())
 	);
 	assert_eq!(
 		rt_config.igd.refresh_time,
 		Duration::from_secs(REFRESH_TIME.into())
 	);*/
 }
 #[test]
 #[should_panic]
-fn err_from_iter_invalid_refresh_time() {
+fn err_invalid_igd_options() {
-    let mut opts = minimal_valid_options();
+	let mut opts = minimal_valid_options();
-    opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "60".to_string());
+	opts.insert("DIPLONAT_IGD_ENABLE".to_string(), "true".to_string());
-    opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "60".to_string());
+	opts.insert("DIPLONAT_IGD_EXPIRATION_TIME".to_string(), "60".to_string());
-    ConfigOpts::from_iter(opts).unwrap();
+	opts.insert("DIPLONAT_IGD_REFRESH_TIME".to_string(), "60".to_string());
 	ConfigOpts::from_iter(opts).unwrap();
 }
 #[test]
-fn ok_from_iter_all_valid_options() {
+fn ok_all_valid_options() {
-    let opts = all_valid_options();
+	let opts = all_valid_options();
-    let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
+	let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
-    let expiration_time = Duration::from_secs(
+	let firewall_refresh_time = Duration::from_secs(
-        opts.get(&"DIPLONAT_EXPIRATION_TIME".to_string())
+		opts.get(&"DIPLONAT_FIREWALL_REFRESH_TIME".to_string()).unwrap()
-            .unwrap()
+			.parse::<u64>().unwrap()
-            .parse::<u64>()
+			.into());
-            .unwrap()
+	let igd_expiration_time = Duration::from_secs(
-            .into(),
+		opts.get(&"DIPLONAT_IGD_EXPIRATION_TIME".to_string()).unwrap()
-    );
+			.parse::<u64>().unwrap()
-    let refresh_time = Duration::from_secs(
+			.into());
-        opts.get(&"DIPLONAT_REFRESH_TIME".to_string())
+	let igd_refresh_time = Duration::from_secs(
-            .unwrap()
+		opts.get(&"DIPLONAT_IGD_REFRESH_TIME".to_string()).unwrap()
-            .parse::<u64>()
+			.parse::<u64>().unwrap()
-            .unwrap()
+			.into());
            .into(),
    );
-    assert_eq!(
+	assert_eq!(
-        &rt_config.consul.node_name,
+		&rt_config.consul.node_name, 
-        opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
+		opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
-    );
+	);
-    assert_eq!(
+	assert_eq!(
-        &rt_config.consul.url,
+		&rt_config.consul.url, 
-        opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap()
+		opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap()
-    );
+	);
-    assert_eq!(rt_config.firewall.refresh_time, refresh_time);
+
-    let igd = rt_config.igd.unwrap();
+	assert!(rt_config.acme.is_some());
-    assert_eq!(
+	let acme = rt_config.acme.unwrap();
-        &igd.private_ip.unwrap().to_string(),
+	assert_eq!(
-        opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
+		&acme.email,
-    );
+		opts.get(&"DIPLONAT_ACME_EMAIL".to_string()).unwrap());
-    assert_eq!(igd.expiration_time, expiration_time);
+
-    assert_eq!(igd.refresh_time, refresh_time);
+	assert!(rt_config.firewall.is_some());
 	let firewall = rt_config.firewall.unwrap();
 	assert_eq!(
 		firewall.refresh_time,
 		firewall_refresh_time
 	);
 	assert!(rt_config.igd.is_some());
 	let igd = rt_config.igd.unwrap();
 	assert_eq!(
 		&igd.private_ip,
 		opts.get(&"DIPLONAT_IGD_PRIVATE_IP".to_string()).unwrap()
 	);
 	assert_eq!(
 		igd.expiration_time,
 		igd_expiration_time
 	);
 	assert_eq!(
 		igd.refresh_time,
 		igd_refresh_time
 	);
 }
--- a/src/config/runtime.rs
+++ b/src/config/runtime.rs
@ -1,191 +1,130 @@
 use std::fs::File;
 use std::io::Read;
 use std::net::{Ipv4Addr, SocketAddr, ToSocketAddrs};
 use std::time::Duration;
-use anyhow::{anyhow, bail, Context, Result};
+use anyhow::{Result, anyhow};
-use crate::config::{ConfigOpts, ConfigOptsBase, ConfigOptsConsul};
+use crate::config::{ConfigOpts, ConfigOptsConsul, ConfigOptsAcme, ConfigOptsFirewall, ConfigOptsIgd};
 // This code is inspired by the Trunk crate (https://github.com/thedodd/trunk)
-// In this file, we take ConfigOpts and transform them into ready-to-use
+// In this file, we take ConfigOpts and transform them into ready-to-use RuntimeConfig.
-// RuntimeConfig. We apply default values and business logic.
+// We apply default values and business logic.
 // Consul config is mandatory, all the others are optional.
 #[derive(Debug)]
 pub struct RuntimeConfigConsul {
-    pub node_name: String,
+	pub node_name: String,
-    pub url: String,
+	pub url: String,
-    pub tls: Option<(Option<reqwest::Certificate>, bool, reqwest::Identity)>,
+}
 #[derive(Debug)]
 pub struct RuntimeConfigAcme {
 	pub email: String,
 }
 #[derive(Debug)]
 pub struct RuntimeConfigFirewall {
-    pub ipv6_only: bool,
+	pub refresh_time: Duration,
    pub refresh_time: Duration,
 }
 #[derive(Debug)]
 pub struct RuntimeConfigIgd {
-    pub private_ip: Option<Ipv4Addr>,
+	pub private_ip: String,
-    pub expiration_time: Duration,
+	pub expiration_time: Duration,
-    pub refresh_time: Duration,
+	pub refresh_time: Duration,
 }
 #[derive(Debug)]
 pub struct RuntimeConfigStun {
    pub stun_server_v4: Option<SocketAddr>,
    pub stun_server_v6: SocketAddr,
    pub refresh_time: Duration,
 }
 #[derive(Debug)]
 pub struct RuntimeConfig {
-    pub consul: RuntimeConfigConsul,
+	pub consul: RuntimeConfigConsul,
-    pub firewall: RuntimeConfigFirewall,
+	pub acme: Option<RuntimeConfigAcme>,
-    pub igd: Option<RuntimeConfigIgd>,
+	pub firewall: Option<RuntimeConfigFirewall>,
-    pub stun: RuntimeConfigStun,
+	pub igd: Option<RuntimeConfigIgd>,
 }
 impl RuntimeConfig {
-    pub fn new(opts: ConfigOpts) -> Result<Self> {
+	pub fn new(opts: ConfigOpts) -> Result<Self> {
-        let consul = RuntimeConfigConsul::new(opts.consul)?;
+		let consul = RuntimeConfigConsul::new(opts.consul.clone())?;
-        let firewall = RuntimeConfigFirewall::new(&opts.base)?;
+		let acme = RuntimeConfigAcme::new(opts.acme.clone())?;
-        let igd = match opts.base.ipv6_only {
+		let firewall = RuntimeConfigFirewall::new(opts.firewall.clone())?;
-            false => Some(RuntimeConfigIgd::new(&opts.base)?),
+		let igd = RuntimeConfigIgd::new(opts.igd.clone())?;
            true => None,
        };
        let stun = RuntimeConfigStun::new(&opts.base)?;
-        Ok(Self {
+		Ok(Self {
-            consul,
+			acme,
-            firewall,
+			consul,
-            igd,
+			firewall,
-            stun,
+			igd,
-        })
+		})
-    }
+	}
 }
 impl RuntimeConfigConsul {
-    pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
+	pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
-        let node_name = opts
+		let node_name = opts.node_name.expect(
-            .node_name
+			"'DIPLONAT_CONSUL_NODE_NAME' is required");
-            .expect("'DIPLONAT_CONSUL_NODE_NAME' environment variable is required");
+		let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
        let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
-        let tls = match (&opts.client_cert, &opts.client_key) {
+		Ok(Self {
-            (Some(client_cert), Some(client_key)) => {
+			node_name,
-                let cert = match &opts.ca_cert {
+			url,
-                    Some(ca_cert) => {
+		})
-                        let mut ca_cert_buf = vec![];
+	}
-                        File::open(ca_cert)?.read_to_end(&mut ca_cert_buf)?;
+}
                        Some(reqwest::Certificate::from_pem(&ca_cert_buf[..])?)
                    }
                    None => None,
                };
-                let mut client_cert_buf = vec![];
+impl RuntimeConfigAcme {
-                File::open(client_cert)?.read_to_end(&mut client_cert_buf)?;
+	pub fn new(opts: ConfigOptsAcme) -> Result<Option<Self>> {
 		if !opts.enable {
 			return Ok(None);
 		}
-                let mut client_key_buf = vec![];
+		let email = opts.email.expect(
-                File::open(client_key)?.read_to_end(&mut client_key_buf)?;
+			"'DIPLONAT_ACME_EMAIL' is required if ACME is enabled");
-                let ident = reqwest::Identity::from_pem(
+		Ok(Some(Self {
-                    &[&client_cert_buf[..], &client_key_buf[..]].concat()[..],
+			email,
-                )?;
+		}))
-
+	}
                Some((cert, opts.tls_skip_verify, ident))
            }
            (None, None) => None,
            _ => bail!("Incomplete TLS configuration parameters"),
        };
        Ok(Self {
            node_name,
            url,
            tls,
        })
    }
 }
 impl RuntimeConfigFirewall {
-    pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> {
+	pub(super) fn new(opts: ConfigOptsFirewall) -> Result<Option<Self>> {
-        let refresh_time =
+		if !opts.enable {
-            Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
+			return Ok(None);
 		}
-        Ok(Self {
+		let refresh_time = Duration::from_secs(
-            refresh_time,
+				opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
-            ipv6_only: opts.ipv6_only,
+
-        })
+		Ok(Some(Self {
-    }
+			refresh_time,
 		}))
 	}
 }
 impl RuntimeConfigIgd {
-    pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> {
+	pub(super) fn new(opts: ConfigOptsIgd) -> Result<Option<Self>> {
-        let private_ip = opts
+		if !opts.enable {
-            .private_ip
+			return Ok(None);
-            .as_ref()
+		}
            .map(|x| x.parse())
            .transpose()
            .context("parse private_ip")?;
        let expiration_time = Duration::from_secs(
            opts.expiration_time
                .unwrap_or(super::EXPIRATION_TIME)
                .into(),
        );
        let refresh_time =
            Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
-        if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
+		let private_ip = opts.private_ip.expect(
-            return Err(anyhow!(
+			"'DIPLONAT_IGD_PRIVATE_IP' is required if IGD is enabled");
-        "IGD expiration time (currently: {}s) must be at least twice bigger than refresh time \
+		let expiration_time = Duration::from_secs(
-         (currently: {}s)",
+				opts.expiration_time.unwrap_or(super::EXPIRATION_TIME).into());
-        expiration_time.as_secs(),
+		let refresh_time = Duration::from_secs(
-        refresh_time.as_secs()
+				opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
      ));
        }
-        Ok(Self {
+		if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
-            private_ip,
+	      return Err(anyhow!(
-            expiration_time,
+	        "IGD expiration time (currently: {}s) must be at least twice bigger than refresh time (currently: {}s)", 
-            refresh_time,
+	        expiration_time.as_secs(),
-        })
+	        refresh_time.as_secs()));
-    }
+	    }
-}
+
-
+		Ok(Some(Self {
-impl RuntimeConfigStun {
+			private_ip,
-    pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> {
+			expiration_time,
-        let mut stun_server_v4 = None;
+			refresh_time,
-        let mut stun_server_v6 = None;
+		}))
-        for addr in opts
+	}
            .stun_server
            .as_deref()
            .unwrap_or(super::STUN_SERVER)
            .to_socket_addrs()?
        {
            if addr.is_ipv4() {
                stun_server_v4 = Some(addr);
            }
            if addr.is_ipv6() {
                stun_server_v6 = Some(addr);
            }
        }
        let refresh_time =
            Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
        let stun_server_v4 = match opts.ipv6_only {
            false => Some(
                stun_server_v4.ok_or(anyhow!("Unable to resolve STUN server's IPv4 address"))?,
            ),
            true => None,
        };
        Ok(Self {
            stun_server_v4,
            stun_server_v6: stun_server_v6
                .ok_or(anyhow!("Unable to resolve STUN server's IPv6 address"))?,
            refresh_time,
        })
    }
 }
--- a/src/consul.rs
+++ b/src/consul.rs
@ -1,86 +1,50 @@
 use std::collections::HashMap;
-use anyhow::{anyhow, Result};
+use anyhow::{Result, anyhow};
-use serde::{Deserialize, Serialize};
+use serde::{Serialize, Deserialize};
 use crate::config::RuntimeConfigConsul;
 #[derive(Serialize, Deserialize, Debug)]
 pub struct ServiceEntry {
-    #[serde(rename = "Tags")]
+  pub Tags: Vec<String>
    pub tags: Vec<String>,
 }
-#[derive(Serialize, Deserialize, Debug, Default)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct CatalogNode {
-    #[serde(rename = "Services")]
+  pub Services: HashMap<String, ServiceEntry>
    pub services: HashMap<String, ServiceEntry>,
 }
 pub struct Consul {
-    client: reqwest::Client,
+  client: reqwest::Client,
-    url: String,
+  url: String,
-    idx: Option<u64>,
+  idx: Option<u64>
 }
 impl Consul {
-    pub fn new(config: &RuntimeConfigConsul) -> Self {
+  pub fn new(url: &str) -> Self {
-        let client = if let Some((ca, skip_verify, ident)) = config.tls.clone() {
+    return Self {
-            if skip_verify {
+      client: reqwest::Client::new(),
-                reqwest::Client::builder()
+      url: url.to_string(),
-                    .use_rustls_tls()
+      idx: None
-                    .danger_accept_invalid_certs(true)
+    };
-                    .identity(ident)
+  }
                    .build()
                    .expect("Unable to build reqwest client")
            } else if let Some(ca) = ca {
                reqwest::Client::builder()
                    .use_rustls_tls()
                    .add_root_certificate(ca)
                    .identity(ident)
                    .build()
                    .expect("Unable to build reqwest client")
            } else {
                reqwest::Client::builder()
                    .use_rustls_tls()
                    .identity(ident)
                    .build()
                    .expect("Unable to build reqwest client")
            }
        } else {
            reqwest::Client::new()
        };
        return Self {
            client,
            url: config.url.clone(),
            idx: None,
        };
    }
-    pub fn watch_node_reset(&mut self) -> () {
+  pub fn watch_node_reset(&mut self) -> () {
-        self.idx = None;
+    self.idx = None;
-    }
+  }
-    pub async fn watch_node(&mut self, host: &str) -> Result<CatalogNode> {
+  pub async fn watch_node(&mut self, host: &str) -> Result<CatalogNode> {
-        let url = match self.idx {
+    let url = match self.idx {
-            Some(i) => format!("{}/v1/catalog/node/{}?index={}", self.url, host, i),
+      Some(i) => format!("{}/v1/catalog/node/{}?index={}", self.url, host, i),
-            None => format!("{}/v1/catalog/node/{}", self.url, host),
+      None => format!("{}/v1/catalog/node/{}", self.url, host)
-        };
+    };
-        let http = self.client.get(&url).send().await?;
+    let http = self.client.get(&url).send().await?;
-        self.idx = match http.headers().get("X-Consul-Index") {
+    self.idx = match http.headers().get("X-Consul-Index") {
-            Some(v) => Some(v.to_str()?.parse::<u64>()?),
+      Some(v) => Some(v.to_str()?.parse::<u64>()?),
-            None => return Err(anyhow!("X-Consul-Index header not found")),
+      None => return Err(anyhow!("X-Consul-Index header not found"))
-        };
+    };
-        let resp: Option<CatalogNode> = http.json().await?;
+    let resp: CatalogNode = http.json().await?;
-        return Ok(resp.unwrap_or_default());
+    return Ok(resp)
-    }
+  }
    pub async fn kv_put(&self, key: &str, bytes: Vec<u8>) -> Result<()> {
        let url = format!("{}/v1/kv/{}", self.url, key);
        let http = self.client.put(&url).body(bytes).send().await?;
        http.error_for_status()?;
        Ok(())
    }
 }
--- a/src/consul_actor.rs
+++ b/src/consul_actor.rs
@ -1,120 +1,114 @@
-use std::{cmp, collections::HashSet, time::Duration};
+use std::cmp;
 use std::collections::HashSet;
 use std::time::Duration;
 use anyhow::Result;
 use log::*;
-use serde::{Deserialize, Serialize};
+use serde::{Serialize, Deserialize};
-use serde_lexpr::{error, from_str};
+use serde_lexpr::{from_str,error};
-use tokio::{sync::watch, time::sleep};
+use tokio::sync::watch;
 use tokio::time::delay_for;
 use crate::config::RuntimeConfigConsul;
-use crate::{consul, messages};
+use crate::consul;
 use crate::messages;
 #[derive(Serialize, Deserialize, Debug)]
 pub enum DiplonatParameter {
-    #[serde(rename = "tcp_port")]
+  tcp_port(HashSet<u16>),
-    TcpPort(HashSet<u16>),
+  udp_port(HashSet<u16>)
    #[serde(rename = "udp_port")]
    UdpPort(HashSet<u16>),
 }
 #[derive(Serialize, Deserialize, Debug)]
 pub enum DiplonatConsul {
-    #[serde(rename = "diplonat")]
+  diplonat(Vec<DiplonatParameter>)
    Diplonat(Vec<DiplonatParameter>),
 }
 pub struct ConsulActor {
-    pub rx_open_ports: watch::Receiver<messages::PublicExposedPorts>,
+  pub rx_open_ports: watch::Receiver<messages::PublicExposedPorts>,
-    consul: consul::Consul,
+  consul: consul::Consul,
-    node: String,
+  node: String,
-    retries: u32,
+  retries: u32,
-    tx_open_ports: watch::Sender<messages::PublicExposedPorts>,
+
  tx_open_ports: watch::Sender<messages::PublicExposedPorts>
 }
 fn retry_to_time(retries: u32, max_time: Duration) -> Duration {
-    // 1.2^x seems to be a good value to exponentially increase time at a good pace
+  // 1.2^x seems to be a good value to exponentially increase time at a good pace
-    // eg. 1.2^32 = 341 seconds ~= 5 minutes - ie. after 32 retries we wait 5
+  // eg. 1.2^32 = 341 seconds ~= 5 minutes - ie. after 32 retries we wait 5 minutes
-    // minutes
+  return Duration::from_secs(cmp::min(max_time.as_secs(), 1.2f64.powf(retries as f64) as u64))
    return Duration::from_secs(cmp::min(
        max_time.as_secs(),
        1.2f64.powf(retries as f64) as u64,
    ));
 }
 fn to_parameters(catalog: &consul::CatalogNode) -> Vec<DiplonatConsul> {
-    let mut r = Vec::new();
+  let mut r = Vec::new();
-    for (_, service_info) in &catalog.services {
+  for (_, service_info) in &catalog.Services {
-        for tag in &service_info.tags {
+    for tag in &service_info.Tags {
-            let diplo_conf: error::Result<DiplonatConsul> = from_str(tag);
+      let diplo_conf: error::Result<DiplonatConsul> = from_str(tag);
-            match diplo_conf {
+      match diplo_conf {
-                Ok(conf) => r.push(conf),
+        Ok(conf) => r.push(conf),
-                Err(e) => debug!("Failed to parse entry {}. {}", tag, e),
+        Err(e) => debug!("Failed to parse entry {}. {}", tag, e),
-            };
+      };
        }
    }
  }
-    return r;
+  return r;
 }
 fn to_open_ports(params: &Vec<DiplonatConsul>) -> messages::PublicExposedPorts {
-    let mut op = messages::PublicExposedPorts {
+  let mut op = messages::PublicExposedPorts { 
-        tcp_ports: HashSet::new(),
+    tcp_ports: HashSet::new(),
-        udp_ports: HashSet::new(),
+    udp_ports: HashSet::new()
-    };
+  };
-    for conf in params {
+  for conf in params {
-        let DiplonatConsul::Diplonat(c) = conf;
+    let DiplonatConsul::diplonat(c) = conf;
-        for parameter in c {
+    for parameter in c {
-            match parameter {
+      match parameter {
-                DiplonatParameter::TcpPort(p) => op.tcp_ports.extend(p),
+        DiplonatParameter::tcp_port(p) => op.tcp_ports.extend(p),
-                DiplonatParameter::UdpPort(p) => op.udp_ports.extend(p),
+        DiplonatParameter::udp_port(p) => op.udp_ports.extend(p),
-            };
+      };
        }
    }
  }
-    return op;
+  return op;
 }
 impl ConsulActor {
-    pub fn new(config: &RuntimeConfigConsul, node: &str) -> Self {
+  pub fn new(config: RuntimeConfigConsul) -> Self {
-        let (tx, rx) = watch::channel(messages::PublicExposedPorts {
+    let (tx, rx) = watch::channel(messages::PublicExposedPorts{
-            tcp_ports: HashSet::new(),
+      tcp_ports: HashSet::new(),
-            udp_ports: HashSet::new(),
+      udp_ports: HashSet::new()
-        });
+    });
-        return Self {
+    return Self {
-            consul: consul::Consul::new(config),
+      consul: consul::Consul::new(&config.url),
-            rx_open_ports: rx,
+      node: config.node_name,
-            tx_open_ports: tx,
+      retries: 0,
-            node: node.to_string(),
+      rx_open_ports: rx,
-            retries: 0,
+      tx_open_ports: tx,
-        };
+    };
-    }
+  }
-    pub async fn listen(&mut self) -> Result<()> {
+  pub async fn listen(&mut self) -> Result<()> {
-        loop {
+    loop {
-            let catalog = match self.consul.watch_node(&self.node).await {
+      let catalog = match self.consul.watch_node(&self.node).await {
-                Ok(c) => c,
+        Ok(c) => c,
-                Err(e) => {
+        Err(e) => {
-                    self.consul.watch_node_reset();
+          self.consul.watch_node_reset();
-                    self.retries = cmp::min(std::u32::MAX - 1, self.retries) + 1;
+          self.retries = cmp::min(std::u32::MAX - 1, self.retries) + 1;
-                    let will_retry_in = retry_to_time(self.retries, Duration::from_secs(600));
+          let will_retry_in = retry_to_time(self.retries, Duration::from_secs(600));
-                    error!(
+          error!("Failed to query consul. Will retry in {}s. {}", will_retry_in.as_secs(), e);
-                        "Failed to query consul. Will retry in {}s. {}",
+          delay_for(will_retry_in).await;
-                        will_retry_in.as_secs(),
+          continue;
                        e
                    );
                    sleep(will_retry_in).await;
                    continue;
                }
            };
            self.retries = 0;
            let msg = to_open_ports(&to_parameters(&catalog));
            debug!("Extracted configuration: {:#?}", msg);
            self.tx_open_ports.send(msg)?;
        }
      };
      self.retries = 0;
      let msg = to_open_ports(&to_parameters(&catalog));
      debug!("Extracted configuration: {:#?}", msg);
      self.tx_open_ports.broadcast(msg)?;
    }
  }
 }
--- a/src/diplonat.rs
+++ b/src/diplonat.rs
@ -1,78 +1,69 @@
-use anyhow::{Context, Result};
+use anyhow::{Result, anyhow};
 use futures::future::FutureExt;
 use tokio::try_join;
-use crate::{
+use crate::config::ConfigOpts;
-    config::ConfigOpts, consul_actor::ConsulActor, fw_actor::FirewallActor, igd_actor::IgdActor,
+use crate::consul_actor::ConsulActor;
-    stun_actor::StunActor,
+use crate::fw_actor::FirewallActor;
-};
+use crate::igd_actor::IgdActor;
 pub struct Diplonat {
-    consul: ConsulActor,
+  consul: ConsulActor,
-    firewall: FirewallActor,
+
-    igd: Option<IgdActor>,
+  firewall: Option<FirewallActor>,
-    stun: StunActor,
+  igd: Option<IgdActor>,
 }
 impl Diplonat {
-    pub async fn new() -> Result<Self> {
+  pub async fn new() -> Result<Self> {
-        let rt_cfg = ConfigOpts::from_env().context("Parse configuration")?;
+    let config = ConfigOpts::from_env()?;
-        println!("{:#?}", rt_cfg);
+    println!("{:#?}", config);
-        let ca = ConsulActor::new(&rt_cfg.consul, &rt_cfg.consul.node_name);
+    let consul_actor = ConsulActor::new(config.consul);
-        let fw = FirewallActor::new(
+    let firewall_actor = FirewallActor::new(
-            rt_cfg.firewall.ipv6_only,
+        config.firewall,
-            rt_cfg.firewall.refresh_time,
+        &consul_actor.rx_open_ports
-            &ca.rx_open_ports,
+    ).await?;
        )
        .await
        .context("Setup fireall actor")?;
-        let ia = match rt_cfg.igd {
+    let igd_actor = IgdActor::new(
-            Some(igdc) => Some(
+      config.igd,
-                IgdActor::new(
+      &consul_actor.rx_open_ports
-                    igdc.private_ip,
+    ).await?;
                    igdc.refresh_time,
                    igdc.expiration_time,
                    &ca.rx_open_ports,
                )
                .await
                .context("Setup IGD actor")?,
            ),
            None => None,
        };
-        let sa = StunActor::new(&rt_cfg.consul, &rt_cfg.stun, &rt_cfg.consul.node_name);
+    if firewall_actor.is_none() && igd_actor.is_none() {
-
+      return Err(anyhow!(
-        let ctx = Self {
+        "At least enable *one* module, otherwise it's boring!"));
            consul: ca,
            igd: ia,
            firewall: fw,
            stun: sa,
        };
        Ok(ctx)
    }
-    pub async fn listen(&mut self) -> Result<()> {
+    let ctx = Self {
-        let igd_opt = &mut self.igd;
+      consul: consul_actor,
      firewall: firewall_actor,
      igd: igd_actor,
    };
-        try_join!(
+    return Ok(ctx);
-            self.consul.listen().map(|x| x.context("Run consul actor")),
+  }
            async {
                if let Some(igd) = igd_opt {
                    igd.listen().await.context("Run IGD actor")
                } else {
                    Ok(())
                }
            },
            self.firewall
                .listen()
                .map(|x| x.context("Run firewall actor")),
            self.stun.listen().map(|x| x.context("Run STUN actor")),
        )?;
-        Ok(())
+  pub async fn listen(&mut self) -> Result<()> {
-    }
+    let firewall = &mut self.firewall;
    let igd = &mut self.igd;
    try_join!(
      self.consul.listen(),
      async {
        match firewall {
          Some(x) => x.listen().await,
          None => Ok(())
        }
      },
      async {
        match igd {
          Some(x) => x.listen().await,
          None => Ok(())
        }
      },
    )?;
    return Ok(());
  }
 }
--- a/src/fw.rs
+++ b/src/fw.rs
@ -1,6 +1,6 @@
 use std::collections::HashSet;
-use anyhow::{Context, Result};
+use anyhow::{Result,Context};
 use iptables;
 use log::*;
 use regex::Regex;
@ -8,37 +8,23 @@ use regex::Regex;
 use crate::messages;
 pub fn setup(ipt: &iptables::IPTables) -> Result<()> {
    // ensure we start from a clean state without any rule already set
    cleanup(ipt)?;
-    info!("{}: creating DIPLONAT chain", ipt.cmd);
+    ipt.new_chain("filter", "DIPLONAT").context("Failed to create new chain")?;
-    ipt.new_chain("filter", "DIPLONAT")
+    ipt.insert_unique("filter", "INPUT", "-j DIPLONAT", 1).context("Failed to insert jump rule")?;
        .context("Failed to create new chain")?;
    ipt.insert_unique("filter", "INPUT", "-j DIPLONAT", 1)
        .context("Failed to insert jump rule")?;
    Ok(())
 }
 pub fn open_ports(ipt: &iptables::IPTables, ports: messages::PublicExposedPorts) -> Result<()> {
    for p in ports.tcp_ports {
-        info!("{}: opening TCP port {}", ipt.cmd, p);
+        ipt.append("filter", "DIPLONAT", &format!("-p tcp --dport {} -j ACCEPT", p)).context("Failed to insert port rule")?;
        ipt.append(
            "filter",
            "DIPLONAT",
            &format!("-p tcp --dport {} -j ACCEPT", p),
        )
        .context("Failed to insert port rule")?;
    }
    for p in ports.udp_ports {
-        info!("{}: opening UDP port {}", ipt.cmd, p);
+        ipt.append("filter", "DIPLONAT", &format!("-p udp --dport {} -j ACCEPT", p)).context("Failed to insert port rule")?;
        ipt.append(
            "filter",
            "DIPLONAT",
            &format!("-p udp --dport {} -j ACCEPT", p),
        )
        .context("Failed to insert port rule")?;
    }
    Ok(())
@ -47,57 +33,51 @@ pub fn open_ports(ipt: &iptables::IPTables, ports: messages::PublicExposedPorts)
 pub fn get_opened_ports(ipt: &iptables::IPTables) -> Result<messages::PublicExposedPorts> {
    let mut ports = messages::PublicExposedPorts {
        tcp_ports: HashSet::new(),
-        udp_ports: HashSet::new(),
+        udp_ports: HashSet::new()
    };
    let list = ipt.list("filter", "DIPLONAT")?;
-    let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT")
+    let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT").context("Regex matching open ports encountered an unexpected rule")?;
        .context("Regex matching open ports encountered an unexpected rule")?;
    for i in list {
        debug!("{} list DIPLONAT: got {}", ipt.cmd, i);
        let caps = re.captures(&i);
        match caps {
            Some(c) => {
                if let (Some(raw_proto), Some(raw_port)) = (c.get(1), c.get(2)) {
                    let proto = String::from(raw_proto.as_str());
                    let number = String::from(raw_port.as_str()).parse::<u16>()?;
-                    if proto == "tcp" || proto == "6" {
+                    if proto == "tcp" {
                        ports.tcp_ports.insert(number);
                    } else if proto == "udp" || proto == "17" {
                        ports.udp_ports.insert(number);
                    } else {
-                        error!("Unexpected protocol in iptables rule: {}", proto);
+                        ports.udp_ports.insert(number);
                    }
                } else {
                    error!("Unexpected rule found in DIPLONAT chain")
                }
-            }
+
-            _ => {
+            },
-                debug!("{} rule not parsed: {}", ipt.cmd, i);
+            _ => {}
            }
        }
    }
    debug!("{} ports already openned: {:?}", ipt.cmd, ports);
    Ok(ports)
 }
 pub fn cleanup(ipt: &iptables::IPTables) -> Result<()> {
    if ipt.chain_exists("filter", "DIPLONAT")? {
-        info!("{}: removing old DIPLONAT chain", ipt.cmd);
+        ipt.flush_chain("filter", "DIPLONAT").context("Failed to flush the DIPLONAT chain")?;
        ipt.flush_chain("filter", "DIPLONAT")
            .context("Failed to flush the DIPLONAT chain")?;
        if ipt.exists("filter", "INPUT", "-j DIPLONAT")? {
-            ipt.delete("filter", "INPUT", "-j DIPLONAT")
+            ipt.delete("filter", "INPUT", "-j DIPLONAT").context("Failed to delete jump rule")?;
                .context("Failed to delete jump rule")?;
        }
-        ipt.delete_chain("filter", "DIPLONAT")
+        ipt.delete_chain("filter", "DIPLONAT").context("Failed to delete chain")?;
            .context("Failed to delete chain")?;
    }
    Ok(())
 }
--- a/src/fw_actor.rs
+++ b/src/fw_actor.rs
@ -4,100 +4,82 @@ use anyhow::Result;
 use iptables;
 use log::*;
 use tokio::{
-    select,
+  select, 
-    sync::watch,
+  sync::watch, 
-    time::{self, Duration},
+  time::{
-};
+    Duration,
    self, 
 }};
 use crate::config::RuntimeConfigFirewall;
 use crate::fw;
 use crate::messages;
 use crate::{fw, messages};
 pub struct FirewallActor {
-    pub ipt_v4: Option<iptables::IPTables>,
+  pub ipt: iptables::IPTables,
-    pub ipt_v6: iptables::IPTables,
+
-    rx_ports: watch::Receiver<messages::PublicExposedPorts>,
+  last_ports: messages::PublicExposedPorts,
-    last_ports: messages::PublicExposedPorts,
+  refresh: Duration,
-    refresh: Duration,
+
  rx_ports: watch::Receiver<messages::PublicExposedPorts>,
 }
 impl FirewallActor {
-    pub async fn new(
+  pub async fn new(config: Option<RuntimeConfigFirewall>, rxp: &watch::Receiver<messages::PublicExposedPorts>) -> Result<Option<Self>> {
-        ipv6_only: bool,
+    if config.is_none() {
-        refresh: Duration,
+      return Ok(None);
        rxp: &watch::Receiver<messages::PublicExposedPorts>,
    ) -> Result<Self> {
        let ctx = Self {
            ipt_v4: match ipv6_only {
                false => Some(iptables::new(false)?),
                true => None,
            },
            ipt_v6: iptables::new(true)?,
            rx_ports: rxp.clone(),
            last_ports: messages::PublicExposedPorts::new(),
            refresh,
        };
        if let Some(ipt_v4) = &ctx.ipt_v4 {
            fw::setup(ipt_v4)?;
        }
        fw::setup(&ctx.ipt_v6)?;
        return Ok(ctx);
    }
    let config = config.unwrap();
-    pub async fn listen(&mut self) -> Result<()> {
+    let ctx = Self { 
-        let mut interval = time::interval(self.refresh);
+      ipt: iptables::new(false)?,
-        loop {
+      last_ports: messages::PublicExposedPorts::new(),
-            // 1. Wait for an event
+      refresh: config.refresh_time,
-            let new_ports = select! {
+      rx_ports: rxp.clone(),
-              _ = self.rx_ports.changed() => Some(self.rx_ports.borrow().clone()),
+    };
              _ = interval.tick() => None,
              else => return Ok(()) // Sender dropped, terminate loop.
            };
-            // 2. Update last ports if needed
+    fw::setup(&ctx.ipt)?;
            if let Some(p) = new_ports {
                self.last_ports = p;
            }
-            // 3. Update firewall rules
+    return Ok(Some(ctx));
-            match self.do_fw_update().await {
+  }
-                Ok(()) => debug!("Successfully updated firewall rules"),
+
-                Err(e) => error!("An error occured while updating firewall rules. {}", e),
+  pub async fn listen(&mut self) -> Result<()> {
-            }
+    let mut interval = time::interval(self.refresh);
-        }
+    loop {
      // 1. Wait for an event
      let new_ports = select! {
        Some(ports) = self.rx_ports.recv() => Some(ports),
        _ = interval.tick() => None,
        else => return Ok(()) // Sender dropped, terminate loop.
      };
      // 2. Update last ports if needed
      if let Some(p) = new_ports { self.last_ports = p; }
      // 3. Update firewall rules
      match self.do_fw_update().await {
        Ok(()) => debug!("Successfully updated firewall rules"),
        Err(e) => error!("An error occured while updating firewall rules. {}", e),
      }
    }
  }
-    pub async fn do_fw_update(&self) -> Result<()> {
+  pub async fn do_fw_update(&self) -> Result<()> {
-        if let Some(ipt_v4) = &self.ipt_v4 {
+    let curr_opened_ports = fw::get_opened_ports(&self.ipt)?;
            self.do_fw_update_on(ipt_v4).await?;
        }
        self.do_fw_update_on(&self.ipt_v6).await?;
        Ok(())
    }
-    pub async fn do_fw_update_on(&self, ipt: &iptables::IPTables) -> Result<()> {
+    let diff_tcp = self.last_ports.tcp_ports.difference(&curr_opened_ports.tcp_ports).copied().collect::<HashSet<u16>>();
-        let curr_opened_ports = fw::get_opened_ports(ipt)?;
+    let diff_udp = self.last_ports.udp_ports.difference(&curr_opened_ports.udp_ports).copied().collect::<HashSet<u16>>();
-        let diff_tcp = self
+    let ports_to_open = messages::PublicExposedPorts {
-            .last_ports
+        tcp_ports: diff_tcp,
-            .tcp_ports
+        udp_ports: diff_udp
-            .difference(&curr_opened_ports.tcp_ports)
+    };
            .copied()
            .collect::<HashSet<u16>>();
        let diff_udp = self
            .last_ports
            .udp_ports
            .difference(&curr_opened_ports.udp_ports)
            .copied()
            .collect::<HashSet<u16>>();
-        let ports_to_open = messages::PublicExposedPorts {
+    fw::open_ports(&self.ipt, ports_to_open)?;
            tcp_ports: diff_tcp,
            udp_ports: diff_udp,
        };
-        fw::open_ports(ipt, ports_to_open)?;
+    return Ok(());
  }
        return Ok(());
    }
 }
--- a/src/igd_actor.rs
+++ b/src/igd_actor.rs
@ -1,122 +1,90 @@
-use std::net::{Ipv4Addr, SocketAddrV4};
+use std::net::SocketAddrV4;
-use anyhow::{Context, Result};
+use anyhow::{Result, Context};
-use igd::{aio::*, PortMappingProtocol};
+use igd::aio::*;
 use igd::PortMappingProtocol;
 use log::*;
 use tokio::{
-    select,
+  select, 
-    sync::watch,
+  sync::watch, 
-    time::{self, Duration},
+  time::{
-};
+    Duration,
    self, 
 }};
 use crate::config::RuntimeConfigIgd;
 use crate::messages;
 pub struct IgdActor {
-    last_ports: messages::PublicExposedPorts,
+  expire: Duration,
-    rx_ports: watch::Receiver<messages::PublicExposedPorts>,
+  gateway: Gateway,
-    gateway: Gateway,
+  last_ports: messages::PublicExposedPorts,
-    refresh: Duration,
+  private_ip: String,
-    expire: Duration,
+  refresh: Duration,
-    private_ip: Ipv4Addr,
+
  rx_ports: watch::Receiver<messages::PublicExposedPorts>,
 }
 impl IgdActor {
-    pub async fn new(
+  pub async fn new(config: Option<RuntimeConfigIgd>, rxp: &watch::Receiver<messages::PublicExposedPorts>) -> Result<Option<Self>> {
-        priv_ip: Option<Ipv4Addr>,
+    if config.is_none() {
-        refresh: Duration,
+      return Ok(None);
-        expire: Duration,
+    }
-        rxp: &watch::Receiver<messages::PublicExposedPorts>,
+    let config = config.unwrap();
    ) -> Result<Self> {
        let gw = search_gateway(Default::default())
            .await
            .context("Failed to find IGD gateway")?;
        info!("IGD gateway: {}", gw);
-        let private_ip = if let Some(ip) = priv_ip {
+    let gw = search_gateway(Default::default())
-            info!("Using private IP from config: {}", ip);
+              .await
-            ip
+              .context("Failed to find IGD gateway")?;
-        } else {
+    info!("IGD gateway: {}", gw);
            info!("Trying to automatically detect private IP");
            let gwa = gw.addr.ip().octets();
            let cmplen = match gwa {
                [192, 168, _, _] => 3,
                [10, _, _, _] => 2,
                _ => panic!(
                    "Gateway IP does not appear to be in a local network ({})",
                    gw.addr.ip()
                ),
            };
            #[allow(unused_parens)]
            let private_ip = get_if_addrs::get_if_addrs()?
                .into_iter()
                .map(|i| i.addr.ip())
                .filter_map(|a| match a {
                    std::net::IpAddr::V4(a4) if a4.octets()[..cmplen] == gwa[..cmplen] => Some(a4),
                    _ => None,
                })
                .next()
                .expect("No interface has an IP on same subnet as gateway");
            info!("Autodetected private IP: {}", private_ip);
            private_ip
        };
-        let ctx = Self {
+    let ctx = Self { 
-            gateway: gw,
+      expire: config.expiration_time,
-            rx_ports: rxp.clone(),
+      gateway: gw,
-            private_ip,
+      last_ports: messages::PublicExposedPorts::new(),
-            refresh: refresh,
+      private_ip: config.private_ip,
-            expire: expire,
+      refresh: config.refresh_time,
-            last_ports: messages::PublicExposedPorts::new(),
+      rx_ports: rxp.clone(),
-        };
+    };
-        return Ok(ctx);
+    return Ok(Some(ctx));
  }
  pub async fn listen(&mut self) -> Result<()> {
    let mut interval = time::interval(self.refresh);
    loop {
      // 1. Wait for an event
      let new_ports = select! {
        Some(ports) = self.rx_ports.recv() => Some(ports),
        _ = interval.tick() => None,
        else => return Ok(()) // Sender dropped, terminate loop.
      };
      // 2. Update last ports if needed
      if let Some(p) = new_ports { self.last_ports = p; }
      // 3. Flush IGD requests
      match self.do_igd().await {
        Ok(()) => debug!("Successfully updated IGD"),
        Err(e) => error!("An error occured while updating IGD. {}", e),
      }
    }
  }
  pub async fn do_igd(&self) -> Result<()> {
    let actions = [
      (PortMappingProtocol::TCP, &self.last_ports.tcp_ports), 
      (PortMappingProtocol::UDP, &self.last_ports.udp_ports)
    ];
    for (proto, list) in actions.iter() {
      for port in *list {
        let service_str = format!("{}:{}", self.private_ip, port);
        let service  = service_str.parse::<SocketAddrV4>().context("Invalid socket address")?;
        self.gateway.add_port(*proto, *port, service, self.expire.as_secs() as u32, "diplonat").await?;
        debug!("IGD request successful for {:#?} {}", proto, service);
      }
    }
-    pub async fn listen(&mut self) -> Result<()> {
+    return Ok(());
-        let mut interval = time::interval(self.refresh);
+  }
        loop {
            // 1. Wait for an event
            let new_ports = select! {
              _ = self.rx_ports.changed() => Some(self.rx_ports.borrow().clone()),
              _ = interval.tick() => None,
              else => return Ok(()) // Sender dropped, terminate loop.
            };
            // 2. Update last ports if needed
            if let Some(p) = new_ports {
                self.last_ports = p;
            }
            // 3. Flush IGD requests
            match self.do_igd().await {
                Ok(()) => debug!("Successfully updated IGD"),
                Err(e) => error!("An error occured while updating IGD. {}", e),
            }
        }
    }
    pub async fn do_igd(&self) -> Result<()> {
        let actions = [
            (PortMappingProtocol::TCP, &self.last_ports.tcp_ports),
            (PortMappingProtocol::UDP, &self.last_ports.udp_ports),
        ];
        for (proto, list) in actions.iter() {
            for port in *list {
                let service = SocketAddrV4::new(self.private_ip, *port);
                self.gateway
                    .add_port(
                        *proto,
                        *port,
                        service,
                        self.expire.as_secs() as u32,
                        "diplonat",
                    )
                    .await?;
                debug!("IGD request successful for {:#?} {}", proto, service);
            }
        }
        return Ok(());
    }
 }
--- a/src/main.rs
+++ b/src/main.rs
@ -6,20 +6,15 @@ mod fw;
 mod fw_actor;
 mod igd_actor;
 mod messages;
 mod stun_actor;
 use diplonat::Diplonat;
 use log::*;
 use diplonat::Diplonat;
 #[tokio::main]
 async fn main() {
-    pretty_env_logger::init();
+  pretty_env_logger::init();
-    info!("Starting Diplonat");
+  info!("Starting Diplonat");
-    Diplonat::new()
+  let mut diplo = Diplonat::new().await.expect("Setup failed");
-        .await
+  diplo.listen().await.expect("A runtime error occured");
        .expect("Setup failed")
        .listen()
        .await
        .expect("A runtime error occured");
 }
--- a/src/messages.rs
+++ b/src/messages.rs
@ -2,15 +2,15 @@ use std::collections::HashSet;
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PublicExposedPorts {
-    pub tcp_ports: HashSet<u16>,
+  pub tcp_ports: HashSet<u16>,
-    pub udp_ports: HashSet<u16>,
+  pub udp_ports: HashSet<u16>
 }
 impl PublicExposedPorts {
-    pub fn new() -> Self {
+  pub fn new() -> Self {
-        return Self {
+    return Self {
-            tcp_ports: HashSet::new(),
+      tcp_ports: HashSet::new(),
-            udp_ports: HashSet::new(),
+      udp_ports: HashSet::new()
        };
    }
  }
 }
--- a/src/stun_actor.rs
+++ b/src/stun_actor.rs
@ -1,176 +0,0 @@
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
 use std::time::{Duration, SystemTime};
 use anyhow::{anyhow, bail, Result};
 use log::*;
 use serde::{Deserialize, Serialize};
 use crate::config::{RuntimeConfigConsul, RuntimeConfigStun};
 use crate::consul;
 /// If autodiscovery returns None but an address was obtained less than
 /// this number of seconds ago (here 15 minutes), we keep that address
 /// in the Consul db instead of insterting a None.
 const PERSIST_SOME_RESULT_DURATION_SECS: u64 = 900;
 pub struct StunActor {
    consul: consul::Consul,
    refresh_time: Duration,
    autodiscovery_v4: StunAutodiscovery,
    autodiscovery_v6: StunAutodiscovery,
 }
 pub struct StunAutodiscovery {
    consul_key: String,
    is_ipv4: bool,
    stun_server: Option<SocketAddr>,
    last_result: Option<AutodiscoverResult>,
 }
 #[derive(Serialize, Deserialize, Debug)]
 pub struct AutodiscoverResult {
    pub timestamp: u64,
    pub address: Option<IpAddr>,
 }
 impl StunActor {
    pub fn new(
        consul_config: &RuntimeConfigConsul,
        stun_config: &RuntimeConfigStun,
        node: &str,
    ) -> Self {
        assert!(stun_config
            .stun_server_v4
            .map(|x| x.is_ipv4())
            .unwrap_or(true));
        assert!(stun_config.stun_server_v6.is_ipv6());
        let autodiscovery_v4 = StunAutodiscovery {
            consul_key: format!("diplonat/autodiscovery/ipv4/{}", node),
            is_ipv4: true,
            stun_server: stun_config.stun_server_v4,
            last_result: None,
        };
        let autodiscovery_v6 = StunAutodiscovery {
            consul_key: format!("diplonat/autodiscovery/ipv6/{}", node),
            is_ipv4: false,
            stun_server: Some(stun_config.stun_server_v6),
            last_result: None,
        };
        Self {
            consul: consul::Consul::new(consul_config),
            autodiscovery_v4,
            autodiscovery_v6,
            refresh_time: stun_config.refresh_time,
        }
    }
    pub async fn listen(&mut self) -> Result<()> {
        loop {
            if let Err(e) = self.autodiscovery_v4.do_iteration(&self.consul).await {
                error!("Unable to autodiscover IPv4 address: {}", e);
            }
            if let Err(e) = self.autodiscovery_v6.do_iteration(&self.consul).await {
                error!("Unable to autodiscover IPv6 address: {}", e);
            }
            tokio::time::sleep(self.refresh_time).await;
        }
    }
 }
 impl StunAutodiscovery {
    async fn do_iteration(&mut self, consul: &consul::Consul) -> Result<()> {
        let binding_ip = match self.is_ipv4 {
            true => IpAddr::V4(Ipv4Addr::UNSPECIFIED),  // 0.0.0.0
            false => IpAddr::V6(Ipv6Addr::UNSPECIFIED), // [::]
        };
        let binding_addr = SocketAddr::new(binding_ip, 0);
        let discovered_addr = match self.stun_server {
            Some(stun_server) => {
                assert_eq!(self.is_ipv4, stun_server.is_ipv4());
                get_mapped_addr(stun_server, binding_addr)
                    .await?
                    .map(|x| x.ip())
            }
            None => None,
        };
        let now = timestamp();
        if discovered_addr.is_none() {
            if let Some(last_result) = &self.last_result {
                if last_result.address.is_some()
                    && now - last_result.timestamp <= PERSIST_SOME_RESULT_DURATION_SECS
                {
                    // Keep non-None result that was obtained before by not
                    // writing/taking into account None result.
                    return Ok(());
                }
            }
        }
        let current_result = AutodiscoverResult {
            timestamp: now,
            address: discovered_addr,
        };
        let msg = format!(
            "STUN autodiscovery result: {} -> {:?}",
            self.consul_key, discovered_addr
        );
        if self.last_result.as_ref().and_then(|x| x.address) != discovered_addr {
            info!("{}", msg);
        } else {
            debug!("{}", msg);
        }
        consul
            .kv_put(&self.consul_key, serde_json::to_vec(&current_result)?)
            .await?;
        self.last_result = Some(current_result);
        Ok(())
    }
 }
 async fn get_mapped_addr(
    stun_server: SocketAddr,
    binding_addr: SocketAddr,
 ) -> Result<Option<SocketAddr>> {
    use stun_client::*;
    let mut client = Client::new(binding_addr, None).await?;
    let res = match client.binding_request(stun_server, None).await {
        Err(e) => {
            info!(
                "STUN binding request to {} failed, assuming no address (error: {})",
                binding_addr, e
            );
            return Ok(None);
        }
        Ok(r) => r,
    };
    if res.get_class() != Class::SuccessResponse {
        bail!("STUN server did not responde with a success response");
    }
    let xor_mapped_addr = Attribute::get_xor_mapped_address(&res)
        .ok_or(anyhow!("no XorMappedAddress found in STUN response"))?;
    Ok(Some(xor_mapped_addr))
 }
 fn timestamp() -> u64 {
    SystemTime::now()
        .duration_since(SystemTime::UNIX_EPOCH)
        .expect("clock error")
        .as_secs()
 }
Author	SHA1	Message	Date
adrien	195aec2cfe	updated README.md	2021-08-26 16:17:37 +02:00
adrien	76fe63791b	Rewrote the configuration options to make Diplonat modular: IGD and Firewall modules will only be enabled if correponding `DIPLONAT_*_ENABLE` is set. (Breaking changes!) Also rearranged imports throughout the project, because I couldn't resist, sorry.	2021-08-26 16:05:39 +02:00