diff --git a/.gitignore b/.gitignore
index 65f1105..6c73033 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,11 @@
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 # will have compiled files and executables
 /target/
 
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-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
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 # These are backup files generated by rustfmt
 **/*.rs.bk
 
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new file mode 100644
index 0000000..333b2b1
--- /dev/null
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+ "winapi 0.3.8",
+]
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diff --git a/Cargo.toml b/Cargo.toml
index ce3bd6e..d87f9e4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ edition = "2018"
 
 [dependencies]
 m3u8-rs = "1.0.5"
-reqwest = "0.10.1"
+reqwest = { version = "0.10.1", features = ["blocking", "json"] }
 http = "0.2.0"
-rust_util = "0.2.1"
+rust_util = "0.6.41"
+sha256 = "1.1.1"
diff --git a/src/main.rs b/src/main.rs
index e4cdcb1..0c7c0b2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,10 +1,14 @@
+use std::fmt::format;
+use std::fs;
 use rust_util::*;
 use m3u8_rs::*;
-use m3u8_rs::playlist::Playlist;
+use m3u8_rs::playlist::{MediaPlaylist, Playlist};
+
+const CACHE_DIR: &'static str = "";
 
 // https://github.com/rutgersc/m3u8-rs/blob/master/examples/simple.rs
 fn main() -> XResult<()> {
-    let test_fn = "/Users/hatterjiang/m/vod";
+    let test_fn = "test.m3u8";
     let test_f_content = std::fs::read_to_string(test_fn)?;
 
     let parsed = parse_playlist_res(test_f_content.as_bytes());
@@ -13,21 +17,10 @@ fn main() -> XResult<()> {
         Ok(Playlist::MasterPlaylist(_pl)) => { //println!("Master playlist:\n{:?}", pl),
             println!("Master play list not supported!");
             return Ok(());
-        },
-        Ok(Playlist::MediaPlaylist(pl)) =>  { //println!("Media playlist:\n{:?}", pl),
-            println!("Version: {}", pl.version);
-            println!("Duration: {}", pl.target_duration);
-            println!("Media sequence: {}", pl.media_sequence);
-            println!("Discontinueity sequence: {}", pl.discontinuity_sequence);
-            println!("Play list type: {:?}", pl.playlist_type);
-            println!("I frames only: {}", pl.i_frames_only);
-            println!("Start: {:?}", pl.start);
-            println!("Independent segments: {}", pl.independent_segments);
-            println!("End list: {}", pl.end_list);
-            for _s in pl.segments {
-                // println!("{:?}", s);
-            }
-        },
+        }
+        Ok(Playlist::MediaPlaylist(pl)) => { //println!("Media playlist:\n{:?}", pl),
+            print_media_play_list(&pl);
+        }
         Err(e) => println!("Error: {:?}", e)
     }
 
@@ -35,3 +28,27 @@ fn main() -> XResult<()> {
 
     Ok(())
 }
+
+fn cache_and_read_file(url: &str) -> XResult<String> {
+    if fs::metadata(CACHE_DIR).is_err() {
+        opt_result!(fs::create_dir_all(url), "Create dir failed: {}, error: {}", CACHE_DIR);
+    }
+    let url_in_sha256 = sha256::digest(url);
+    let file_dir = format!("{}/{}", CACHE_DIR, url_in_sha256);
+    let file_url = format!("{}.url", &file_dir);
+    let file_content = format!("{}.content", &file_dir);
+    if fs::metadata(&file_url).is_err() {
+        opt_result!(fs::write(&file_url, url), "Write file: {}, failed: {}", file_url);
+    }
+    let get_response = opt_result!(reqwest::blocking::get(&url), "Get URL: {}, failed: {}", url);
+    // if fs::metadata(&file_content).is_err() {
+    //     opt_result!(fs::write(&file_content, ))
+    // }
+    Ok("".to_string())
+}
+
+fn print_media_play_list(pl: &MediaPlaylist) {
+    let mut cloned_pl = pl.clone();
+    cloned_pl.segments = vec![];
+    println!("Media play list details:\n{:#?}", cloned_pl);
+}