Complete adjustments as recommended.

Author: ssrlive

src/main.rs

@@ -44,7 +44,10 @@ fn main() -> BoxResult<()> {
         })?;
 
         log::debug!("beginning normal operation...");
-        server::serve(&args)?;
+        if let Err(err) = server::serve(&args) {
+            log::error!("unable to run server: {}", err);
+            std::process::exit(4);
+        }
         exiting.join().expect("unable to join SIGINT handler thread");
     } else if args.client.is_some() {
         log::debug!("registering SIGINT handler...");
@@ -59,11 +62,15 @@ fn main() -> BoxResult<()> {
         })?;
 
         log::debug!("connecting to server...");
-        client::execute(&args)?;
+        if let Err(err) = client::execute(&args) {
+            log::error!("unable to run client: {}", err);
+            std::process::exit(4);
+        }
     } else {
         use clap::CommandFactory;
         let mut cmd = args::Args::command();
         cmd.print_help().unwrap();
+        std::process::exit(2);
     }
     Ok(())
 }

src/server.rs

@@ -346,10 +346,10 @@ pub fn serve(args: &Args) -> BoxResult<()> {
     while is_alive() {
         if let Err(err) = poll.poll(&mut events, Some(POLL_TIMEOUT)) {
             if err.kind() == std::io::ErrorKind::Interrupted {
-                log::debug!("Poll interrupted: \"{err}\"");
+                log::debug!("poll interrupted, \"{err}\" ignored; resuming poll");
                 continue;
             }
-            log::error!("Poll error: {}", err);
+            log::error!("poll error: {}", err);
             break;
         }
         for event in events.iter() {