refactor: re-wording + logic

Signed-off-by: Aminu 'Seun Joshua <[email protected]>

Author: seun-ja

crates/trigger-http/src/server.rs

@@ -155,9 +155,9 @@ impl<F: RuntimeFactors> HttpServer<F> {
         } else {
             TcpListener::bind(self.listen_addr).await.map_err(|err| {
                 if err.kind() == ErrorKind::AddrInUse {
-                    anyhow::anyhow!("Unable to listen on {}. To have Spin search for a free port, use the --find-free-port option.", self.listen_addr)
+                    anyhow::anyhow!("{} is already in use. To have Spin search for a free port, use the --find-free-port option.", self.listen_addr)
                 } else {
-                    anyhow::anyhow!("Unable to listen on {}", self.listen_addr)
+                    anyhow::anyhow!("Unable to listen on {}: {err:?}", self.listen_addr)
                 }
             })?
         };
@@ -181,14 +181,15 @@ impl<F: RuntimeFactors> HttpServer<F> {
                 );
             }
 
-            addr.set_port(addr.port() + 1);
-
             match TcpListener::bind(addr).await {
                 Ok(listener) => {
                     found_listener = Some(listener);
                     break;
                 }
-                Err(err) if err.kind() == ErrorKind::AddrInUse => continue,
+                Err(err) if err.kind() == ErrorKind::AddrInUse => {
+                    addr.set_port(addr.port() + 1);
+                    continue;
+                }
                 Err(err) => anyhow::bail!("Unable to listen on {addr}: {err:?}",),
             }
         }