Allow specifying a socket address

Resolves #1 (comment)

web/assets/default_config.yml

@@ -3,6 +3,9 @@
 # The port the server should listen on
 port: 1312
 
+# The address the server should bind to
+address: 0.0.0.0
+
 # A list of pronouns recognized by the server
 #
 # WARNING:  When adding pronouns, only add pronouns to the bottom of the list, and do not

web/src/configuration.rs

@@ -1,3 +1,5 @@
+use std::net::Ipv4Addr;
+use std::net::IpAddr;
 use std::path::PathBuf;
 use pronouns_today::PronounList;
 use pronouns_today::UserPreferences;
@@ -66,6 +68,10 @@ pub struct Run {
 	/// the port to listen on
 	pub port: Option<u16>,
 
+	#[argh(option)]
+	/// the address to bind to
+	pub address: Option<IpAddr>,
+
 	#[argh(option)]
 	/// default pronoun probabilites (formatted as a prefstring, like the ones in the
 	/// used in the custom URLs, e.g. "acaqeawdym")
@@ -122,11 +128,15 @@ pub struct Conf {
 
 	/// The port for the server to bind to.  Defaults to 1312
 	pub port: u16,
+
+	/// The address to bind to.  Defaults to 0.0.0.0
+	pub address: IpAddr,
 }
 
 impl Conf {
 	fn update_with(mut self, args: Run) -> Conf {
 		self.port = args.port.unwrap_or(self.port);
+		self.address = args.address.unwrap_or(self.address);
 		self.instance_settings.pronoun_list = args.pronouns.map(Into::into).unwrap_or(self.instance_settings.pronoun_list);
 		self
 	}
@@ -137,6 +147,7 @@ impl Default for Conf {
         Conf {
             instance_settings: InstanceSettings::default(),
             port: 1312,
+			address: IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)),
         }
     }
 }

web/src/main.rs

@@ -5,6 +5,7 @@ pub mod configuration;
 
 use configuration::ConfigError;
 
+use std::net::SocketAddr;
 use std::process::exit;
 use std::collections::HashMap;
 use std::fmt::{self, Display};
@@ -178,9 +179,9 @@ async fn main() -> std::io::Result<()> {
 
 async fn start_server(config: configuration::Conf) -> std::io::Result<()> {
     // Where we binding bois
-    let bind = format!("0.0.0.0:{}", config.port);
+    let socket_addr = SocketAddr::new(config.address, config.port);
 
-	println!("Starting pronouns-today-web on {}", &bind);
+	println!("Starting pronouns-today-web on {}", &socket_addr);
     HttpServer::new(move|| {
         let logger = Logger::default();
         let app = App::new()
@@ -204,7 +205,7 @@ async fn start_server(config: configuration::Conf) -> std::io::Result<()> {
             .service(resource("/{name}/{prefs}").to(handle_basic_request))
             .default_service(web::to(not_found))
     })
-    .bind(&bind)?
+    .bind(&socket_addr)?
     .run()
     .await
 }