diff --git a/Cargo.lock b/Cargo.lock
index 08b175f..a9dff08 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -259,8 +259,8 @@ name = "hardownload"
 version = "0.1.0"
 dependencies = [
  "clap",
- "env_logger",
  "log",
+ "pretty_env_logger",
  "reqwest",
  "serde",
  "serde_json",
@@ -644,6 +644,16 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "237a5ed80e274dbc66f86bd59c1e25edc039660be53194b5fe0a482e0f2612ea"
 
+[[package]]
+name = "pretty_env_logger"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "926d36b9553851b8b0005f1275891b392ee4d2d833852c417ed025477350fb9d"
+dependencies = [
+ "env_logger",
+ "log",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.18"
diff --git a/Cargo.toml b/Cargo.toml
index e36208a..a1fde11 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,4 +13,4 @@ reqwest = { version = "0.10", features = ["blocking", "json"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 log = "0.4.8"
-env_logger = "0.7.1"
+pretty_env_logger = "0.4.0"
diff --git a/src/cmd.rs b/src/cmd.rs
index 7b40197..6ecaf42 100644
--- a/src/cmd.rs
+++ b/src/cmd.rs
@@ -4,9 +4,9 @@ pub type CommandError = Result<(), Box<dyn std::error::Error>>;
 
 pub trait Command {
 
-    fn subcommand<'a>(&self) -> App<'a, 'a>;
-
     fn name(&self) -> &str;
 
+    fn subcommand<'a>(&self) -> App<'a, 'a>;
+
     fn run(&self, arg_matches: &ArgMatches, _: &ArgMatches) -> CommandError;
 }
diff --git a/src/cmd_default.rs b/src/cmd_default.rs
index abf98a7..d91dd16 100644
--- a/src/cmd_default.rs
+++ b/src/cmd_default.rs
@@ -16,9 +16,9 @@ impl CommandDefault {
 
     pub fn run(arg_matches: &ArgMatches) -> CommandError {
         let verbose_count = arg_matches.occurrences_of("verbose");
-        println!("[INFO] Verbose count: {}", verbose_count);
-        println!("[INFO] This is default command cli ...");
-        // TODO ...
+        println!("Verbose count: {}", verbose_count);
+
+        error!("Default command is not implemented!");
         Ok(())
     }
 }
\ No newline at end of file
diff --git a/src/cmd_download.rs b/src/cmd_download.rs
index ad3e8f6..51d5a8c 100644
--- a/src/cmd_download.rs
+++ b/src/cmd_download.rs
@@ -1,4 +1,5 @@
 use std::fs;
+use std::collections::HashSet;
 use clap::{ Arg, ArgMatches, SubCommand, App, };
 use crate::cmd::{ Command, CommandError, };
 use crate::har::*;
@@ -6,16 +7,13 @@ use crate::har::*;
 pub struct CommandDownload;
 
 impl Command for CommandDownload {
+    fn name(&self) -> &str { "download" }
 
     fn subcommand<'a>(&self) -> App<'a, 'a> {
         SubCommand::with_name(self.name()).about("Download subcommand")
             .arg(Arg::with_name("FILE_NAME").required(true).help("Har file name"))
     }
 
-    fn name(&self) -> &str {
-        "download"
-    }
-
     fn run(&self, _arg_matches: &ArgMatches, sub_arg_matches: &ArgMatches) -> CommandError {
         let file_name = sub_arg_matches.value_of("FILE_NAME").unwrap();
         let har_str = fs::read_to_string(file_name)?;
@@ -40,8 +38,13 @@ impl Command for CommandDownload {
                         return;
                     },
                 };
+                let mut ignore_header_names: HashSet<&str> = HashSet::new();
+                ignore_header_names.insert("if-none-match");
+                ignore_header_names.insert("if-modified-since");
                 for header in &reqeust.headers {
-                    client = client.header(&header.name, &header.value);
+                    if !ignore_header_names.contains(header.name.as_str()) {
+                        client = client.header(&header.name, &header.value);
+                    }
                 }
                 let response = match client.send() {
                     Ok(r) => r, Err(e) => {
@@ -51,9 +54,16 @@ impl Command for CommandDownload {
                 };
                 let code = response.status().as_u16();
                 if code != 200 {
-                    // TODO ...
+                    error!("Response  url: {}, not success: {}", reqeust.url, code);
                     return;
                 }
+                let _bs = match response.bytes() {
+                    Ok(b) => b, Err(e) => {
+                        error!("Response url: {}, error: {}", reqeust.url, e);
+                        return;
+                    },
+                };
+                todo!(); // write file
             }))
         });
 
diff --git a/src/main.rs b/src/main.rs
index 2ca8829..253d674 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,7 +11,7 @@ use cmd_download::CommandDownload;
 use cmd_default::CommandDefault;
 
 fn main() -> CommandError {
-    env_logger::init();
+    pretty_env_logger::init();
     info!("hardownload started");
 
     let commands: Vec<Box<dyn Command>> = vec![