Add anyhow and configurable TcpListener

- add anyhow to Cargo.toml
- make the connection parameter (for the TcpListener) configurable

Cargo.lock

@@ -164,6 +164,7 @@ checksum = "135b12329e5e3ce057a9f972339ea52bc954fe1e9358ef27f95e89716fbc5424"
 name = "husk"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
  "bytes",
  "indymilter",
  "log",

Cargo.toml

@@ -11,6 +11,7 @@ categories = ["cryptography", "email"]
 rust-version = "1.79"
 
 [dependencies]
+anyhow = "1.0.100"
 bytes = "1.10.1"
 indymilter = "0.3.0"
 log = "0.4.27"

config/config.toml

@@ -1,5 +1,6 @@
 #
 # Husk config file
 #
+connection = "localhost:3000"
 
 logfile_config = "./config/log4rs.yml"

src/config.rs

@@ -7,6 +7,7 @@ use serde_derive::Deserialize;
 
 #[derive(Deserialize, Debug)]
 pub struct HuskConfig {
+    pub connection: String,
     logfile_config: Option<String>,
 }
 

src/daemon/mod.rs

@@ -4,6 +4,7 @@
 // the actual daemon
 //
 
+use anyhow;
 use bytes::Bytes;
 use std::ffi::CString;
 use tokio::signal;
@@ -24,14 +25,15 @@ use indymilter::{
 };
 
 use crate::types::husk_context::HuskContext;
+use crate::config::HuskConfig;
 
 pub struct Daemon { }
 
 impl Daemon {
 
-    pub async fn run() -> Result<(), ()> {
+    pub async fn run(config: &HuskConfig) -> anyhow::Result<()> {
 
-        let listener = TcpListener::bind("localhost:3000")
+        let listener = TcpListener::bind(&config.connection)
             .await
             .expect(" opening milter socket");
 

src/main.rs

@@ -30,7 +30,7 @@ async fn main() {
 
     log::info!("starting...");
 
-    match Daemon::run().await {
+    match Daemon::run(&husk_config).await {
         Ok(_) => {
             println!("exiting...");
         },