Debugging messages added

Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea5d730647d4fadd988536d06fecce94b7b4f2a7efdae548f1cf4b63205518ab"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "android-tzdata"
 version = "0.1.1"
@@ -23,6 +32,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "bitflags"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4682ae6287fcf752ecaabbfcc7b6f9b72aa33933dc23a554d853aea8eea8635"
+
 [[package]]
 name = "bumpalo"
 version = "3.14.0"
@@ -64,6 +79,52 @@ version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e496a50fda8aacccc86d7529e2c1e0892dbd0f898a6b5645b5561b89c3210efa"
 
+[[package]]
+name = "env_logger"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
+dependencies = [
+ "humantime",
+ "is-terminal",
+ "log",
+ "regex",
+ "termcolor",
+]
+
+[[package]]
+name = "errno"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "add4f07d43996f76ef320709726a556a9d4f965d9410d8d0271132d2f8293480"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "errno-dragonfly"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
+
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "iana-time-zone"
 version = "0.1.57"
@@ -87,6 +148,17 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "is-terminal"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
+dependencies = [
+ "hermit-abi",
+ "rustix",
+ "windows-sys",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.64"
@@ -102,6 +174,12 @@ version = "0.2.148"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9cdc71e17332e86d2e1d38c1f99edcb6288ee11b815fb1a4b049eaa2114d369b"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3852614a3bd9ca9804678ba6be5e3b8ce76dfc902cae004e3e0c44051b6e88db"
+
 [[package]]
 name = "log"
 version = "0.4.20"
@@ -113,8 +191,16 @@ name = "m32chat"
 version = "0.1.0"
 dependencies = [
  "chrono",
+ "env_logger",
+ "log",
 ]
 
+[[package]]
+name = "memchr"
+version = "2.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+
 [[package]]
 name = "num-traits"
 version = "0.2.16"
@@ -148,6 +234,48 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebee201405406dbf528b8b672104ae6d6d63e6d118cb10e4d51abbc7b58044ff"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59b23e92ee4318893fa3fe3e6fb365258efbfe6ac6ab30f090cdcbb7aa37efa9"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
+
+[[package]]
+name = "rustix"
+version = "0.38.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f9da0cbd88f9f09e7814e388301c8414c51c62aa6ce1e4b5c551d49d96e531"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.37"
@@ -159,6 +287,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6093bad37da69aab9d123a8091e4be0aa4a03e4d601ec641c327398315f62b64"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
@@ -219,6 +356,37 @@ version = "0.2.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca6ad05a4870b2bf5fe995117d3728437bd27d7cd5f06f13c17443ef369775a1"
 
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f29e6f9198ba0d26b4c9f07dbe6f9ed633e1f3d5b8b414090084349e46a52596"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows"
 version = "0.48.0"
@@ -228,6 +396,15 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.48.5"

Cargo.toml

@@ -7,3 +7,5 @@ edition = "2021"
 
 [dependencies]
 chrono = "0.4.31"
+env_logger = "0.10.0"
+log = "0.4.20"

src/main.rs

@@ -1,5 +1,6 @@
 use chrono::{DateTime, Duration, Local};
 use std::{collections::HashMap, net::UdpSocket};
+use log::debug;
 
 const MAX_CLIENTS: usize = 10;
 const CLIENT_TIMEOUT: u32 = 300;
@@ -118,11 +119,15 @@ fn broadcast(
 }
 
 fn main() -> std::io::Result<()> {
+    env_logger::init();
+
     let socket = UdpSocket::bind("0.0.0.0:7373")?;
     socket
         .set_read_timeout(None)
         .expect("Could not set read timeout");
 
+    debug!("Morserino chat server started.");
+
     let mut receivers2: HashMap<String, DateTime<Local>> = HashMap::new();
 
     loop {
@@ -133,9 +138,9 @@ fn main() -> std::io::Result<()> {
         let data = &buf[0..number_of_bytes];
 
         if receivers2.contains_key(&client_addr) {
-            //println!("Client already known.");
+            debug!("Client known: {client_addr}");
             if strip_header(data) == strip_header(mopp(speed, b":bye").as_slice()) {
-                println!("TSCHAU");
+                debug!("Removing client {client_addr} as requested.");
                 socket
                     .send_to(mopp(speed, b":bye").as_slice(), &client_addr)
                     .unwrap();
@@ -145,7 +150,7 @@ fn main() -> std::io::Result<()> {
                 receivers2.insert(client_addr.to_owned(), Local::now());
             }
         } else if strip_header(data) == strip_header(mopp(speed, b"hi").as_slice()) {
-            //println!("Welcome!");
+            debug!("Adding new client {client_addr}");
             if receivers2.len() < MAX_CLIENTS {
                 receivers2.insert(client_addr.to_owned(), Local::now());
                 socket
@@ -156,17 +161,19 @@ fn main() -> std::io::Result<()> {
                     )
                     .unwrap();
             } else {
+                debug!("There are already too many clients connected.");
                 socket
                     .send_to(mopp(speed, b":qrl").as_slice(), &client_addr)
                     .unwrap();
             }
         } else {
-            //println!("Unknown client - Ignoring");
+            debug!("Ignoring unknown client {client_addr}");
         }
 
         let timestamp = Local::now();
         for cl in &receivers2 {
             if *cl.1 + Duration::seconds(CLIENT_TIMEOUT as i64) < timestamp {
+                debug!("Removing outdated client {}", cl.0);
                 socket
                     .send_to(mopp(MY_SPEED, b":bye").as_slice(), &client_addr)
                     .unwrap();