adding log framework

tuic-client/Cargo.toml

@@ -6,7 +6,9 @@ edition = "2021"
 [dependencies]
 bytes = { version = "1.4.0", default-features = false, features = ["std"] }
 crossbeam-utils = { version = "0.8.14", default-features = false, features = ["std"] }
+env_logger = { version = "0.10.0", default-features = false, features = ["humantime"] }
 lexopt = { version = "0.3.0", default-features = false }
+log = { version = "0.4.17", default-features = false, features = ["serde", "std"] }
 once_cell = { version = "1.17.0", default-features = false, features = ["parking_lot", "std"] }
 parking_lot = { version = "0.12.1", default-features = false, features = ["send_guard"] }
 quinn = { version = "0.9.3", default-features = false, features = ["futures-io", "runtime-tokio", "tls-rustls"] }

tuic-client/src/config.rs

@@ -1,5 +1,6 @@
 use crate::utils::{CongestionControl, UdpRelayMode};
 use lexopt::{Arg, Error as ArgumentError, Parser};
+use log::LevelFilter;
 use serde::{de::Error as DeError, Deserialize, Deserializer};
 use serde_json::Error as SerdeError;
 use std::{
@@ -29,6 +30,8 @@ Arguments:
 pub struct Config {
     pub relay: Relay,
     pub local: Local,
+    #[serde(default = "default::log_level")]
+    pub log_level: LevelFilter,
 }
 
 #[derive(Deserialize)]
@@ -112,6 +115,8 @@ impl Config {
 }
 
 mod default {
+    use log::LevelFilter;
+
     pub mod relay {
         use crate::utils::{CongestionControl, UdpRelayMode};
         use std::{path::PathBuf, time::Duration};
@@ -166,6 +171,10 @@ mod default {
             1500
         }
     }
+
+    pub fn log_level() -> LevelFilter {
+        LevelFilter::Warn
+    }
 }
 
 pub fn deserialize_from_str<'de, T, D>(deserializer: D) -> Result<T, D::Error>

tuic-client/src/main.rs

@@ -3,6 +3,7 @@ use self::{
     connection::Endpoint,
     socks5::Server as Socks5Server,
 };
+use env_logger::Builder as LoggerBuilder;
 use quinn::{ConnectError, ConnectionError};
 use std::{env, io::Error as IoError, process};
 use thiserror::Error;
@@ -28,6 +29,8 @@ async fn main() {
         }
     };
 
+    LoggerBuilder::new().filter_level(cfg.log_level).init();
+
     match Endpoint::set_config(cfg.relay) {
         Ok(()) => {}
         Err(err) => {