diff --git a/src/engine.rs b/src/engine.rs
index b28a73a..b9b5af2 100644
--- a/src/engine.rs
+++ b/src/engine.rs
@@ -118,12 +118,18 @@ impl InputEngine for InputEngineUDP {
       let addr = "0.0.0.0:".to_string() + &self.port.to_string();
       println!("$ echo -n 'hello world' | nc -4u -w0 localhost {}", &self.port.to_string());
       if self.last_socket.is_none() {
-         self.last_socket = Some(std::net::UdpSocket::bind(addr).unwrap());
+         let result = std::net::UdpSocket::bind(&addr);
+         if result.is_err() {
+            println!("InputEngineUDP: failed to bind to {}: {:?}", &addr, result.err());
+            return Vec::<char>::new();
+         }
+         self.last_socket = Some(result.unwrap());
       }
 
       let mut buf = [0; 128];
       let result = self.last_socket.as_ref().unwrap().recv_from(&mut buf);
       if result.is_err() {
+         println!("InputEngineUDP: failed to recv: {:?}", result.err());
          self.last_socket = None;
          return Vec::<char>::new();
       }
@@ -241,10 +247,13 @@ impl OutputEngine for OutputEngineUDP {
       if self.last_socket.is_none() {
          let result = std::net::UdpSocket::bind("127.0.0.1:".to_string() + &(self.port+10).to_string());
          if result.is_err() {
+            println!("OutputEngineUDP: failed to bind to 127.0.0.1:{}: {:?}", &(self.port+10).to_string(), result.err());
             return;
          }
          self.last_socket = Some(result.unwrap());
-         if self.last_socket.as_ref().unwrap().connect(self.host.to_string() + ":" + &self.port.to_string()).is_err() {
+         let result = self.last_socket.as_ref().unwrap().connect(self.host.to_string() + ":" + &self.port.to_string());
+         if result.is_err() {
+            println!("OutputEngineUDP: failed to connect to {}:{}: {:?}", self.host.to_string(), self.port.to_string(), result.err());
             self.last_socket = None;
             return;
          }
@@ -252,6 +261,7 @@ impl OutputEngine for OutputEngineUDP {
 
       let result = self.last_socket.as_ref().unwrap().send(&v.iter().cloned().collect::<String>().as_bytes());
       if result.is_err() {
+         println!("OutputEngineUDP: failed to send: {:?}", result.err());
          self.last_socket = None;
       }
    }