diff --git a/src/main.rs b/src/main.rs
index 6518d5f..28e45b4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,5 @@
 pub mod parser;
 
-pub use crate::parser::body::*;
 pub use crate::parser::*;
 
 use std::io;
@@ -28,48 +27,46 @@ pub async fn apiserver() -> io::Result<()> {
         }
     };
 
-    tokio::spawn(async move {
-        loop {
-            match listener.accept().await {
-                Ok((socket, _remote_addr)) => {
-                    let mut buf = vec![0; 1024];
-
-                    match socket.readable().await {
-                        Ok(_) => {
-                            match socket.try_read(&mut buf) {
-                                Ok(_) => match handle(&buf) {
-                                    Some(o) => {
-                                        let _ = socket.try_write(&o).unwrap();
-                                    }
-                                    None => {}
-                                },
-                                Err(e) => {
-                                    println!("error: {e}");
-                                    continue;
+    loop {
+        let (socket, _remote_addr) = listener.accept().await?;
+        tokio::spawn(async move {
+            let mut buf = vec![0; 1024];
+            loop {
+                match socket.readable().await {
+                    Ok(_) => {
+                        match socket.try_read(&mut buf) {
+                            Ok(_) => match handle(&buf) {
+                                Some(o) => {
+                                    let _ = socket.try_write(&o).unwrap();
                                 }
-                            };
-                        }
-                        Err(e) => {
-                            println!("error: {e}");
-                            continue;
-                        }
+                                None => {
+                                    break;
+                                }
+                            },
+                            Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
+                                continue;
+                            }
+                            Err(e) => {
+                                println!("error read: {e}");
+                            }
+                        };
+                    }
+                    Err(e) => {
+                        println!("error socket readable: {e}");
                     }
                 }
-                Err(err) => {
-                    println!("error: {err}");
-                }
             }
-        }
-    });
-    Ok(())
+        });
+    }
 }
 
 pub fn handle(buf: &Vec<u8>) -> Option<Vec<u8>> {
-    let mut rawdata = DataWrapper::new(buf.to_vec());
+    let mut rawdata = InboundDataWrapper::new(buf.to_vec());
     let reply = match parse_inbound_msg(&mut rawdata) {
-        Ok(o) => {
+        Ok(mut o) => {
             println!("query: {}", o);
-            println!("raw query: {:?}", o.to_raw());
+            println!("raw query: {:X?}", o.to_raw());
+            Message::store(&o);
             Message::set_reply(o)
         }
         Err(e) => {
@@ -79,9 +76,9 @@ pub fn handle(buf: &Vec<u8>) -> Option<Vec<u8>> {
     };
 
     match reply {
-        Some(o) => {
+        Some(mut o) => {
             println!("reply: {}", o);
-            println!("raw reply {:?}", o.to_raw());
+            println!("raw reply {:X?}", o.to_raw());
             return Some(o.to_raw().into());
         }
         None => {
diff --git a/src/parser/body.rs b/src/parser/body.rs
index c9601ef..b4453a3 100644
--- a/src/parser/body.rs
+++ b/src/parser/body.rs
@@ -1,3 +1,4 @@
+use bcd_convert::BcdNumber;
 use encoding_rs::*;
 
 macro_rules! generate_impl {
@@ -80,7 +81,16 @@ pub struct TerminalHeartbeat {}
 
 impl TerminalHeartbeat {
     pub const ID: u16 = 0x0002;
+
     pub fn parse(&mut self, rawbody: &Vec<u8>) {}
+
+    pub fn generate_reply(&self, answer_id: u16, serial: u16) -> PlatformUniversalResponse {
+        let mut res = PlatformUniversalResponse::default();
+        res.answer_serial_no = serial;
+        res.answer_id = answer_id;
+        res.result = TerminalRegistrationResult::Success as u8;
+        res
+    }
 }
 
 #[derive(Default, Debug, Clone)]
@@ -296,15 +306,87 @@ pub struct LocationInformationReport {
     pub status: u32,
     pub latitude: u32,
     pub longitude: u32,
-    pub height: u32,
-    pub speed: u32,
-    pub direction: u32,
-    pub time: u32,
+    pub height: u16,
+    pub speed: u16,
+    pub direction: u16,
+    pub time: u64,
 }
 
 impl LocationInformationReport {
     pub const ID: u16 = 0x0200;
-    pub fn parse(&mut self, rawbody: &Vec<u8>) {}
+
+    pub fn parse(&mut self, rawbody: &Vec<u8>) {
+        let mut bd = rawbody.into_iter();
+        self.alert_mark = u32::from_be_bytes(
+            vec![
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+            ]
+            .try_into()
+            .unwrap(),
+        );
+        self.status = u32::from_be_bytes(
+            vec![
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+            ]
+            .try_into()
+            .unwrap(),
+        );
+        self.latitude = u32::from_be_bytes(
+            vec![
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+            ]
+            .try_into()
+            .unwrap(),
+        );
+        self.longitude = u32::from_be_bytes(
+            vec![
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+                *bd.next().unwrap(),
+            ]
+            .try_into()
+            .unwrap(),
+        );
+        self.height = u16::from_be_bytes(
+            vec![*bd.next().unwrap(), *bd.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
+        self.speed = u16::from_be_bytes(
+            vec![*bd.next().unwrap(), *bd.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
+        self.direction = u16::from_be_bytes(
+            vec![*bd.next().unwrap(), *bd.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
+        let mut tmptime: [u8; 6] = [0; 6];
+        for i in 0..tmptime.len() {
+            tmptime[i] = *bd.next().unwrap();
+        }
+        let code = BcdNumber::try_from(&tmptime as &[u8]).unwrap();
+        self.time = code.to_u64().unwrap();
+    }
+
+    pub fn generate_reply(&self, answer_id: u16, serial: u16) -> PlatformUniversalResponse {
+        let mut res = PlatformUniversalResponse::default();
+        res.answer_serial_no = serial;
+        res.answer_id = answer_id;
+        res.result = TerminalRegistrationResult::Success as u8;
+        res
+    }
 }
 
 #[derive(Default, Debug, Clone)]
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index 32359b3..f9cb529 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -1,5 +1,5 @@
-pub mod body;
-pub mod error;
+mod body;
+mod error;
 
 use body::*;
 use error::*;
@@ -20,12 +20,14 @@ const PROPS_RESERVED_MASK: u16 = 0xC000;
 #[allow(dead_code)]
 const PROPS_DATAENCRYPTION_MASK: u16 = 0x0E00;
 
-pub fn parse_inbound_msg(rawdata: &mut DataWrapper) -> std::result::Result<Message, MessageError> {
+pub fn parse_inbound_msg(
+    rawdata: &mut InboundDataWrapper,
+) -> std::result::Result<Message, MessageError> {
     let mut msg: Message = Message::default();
 
     match msg.parse_header(rawdata) {
         Ok(_) => {
-            msg.check(rawdata);
+            msg.inbound_check(rawdata);
         }
         Err(e) => {
             println!("error parsing header {e}");
@@ -37,30 +39,49 @@ pub fn parse_inbound_msg(rawdata: &mut DataWrapper) -> std::result::Result<Messa
 }
 
 #[derive(Default, Debug)]
-pub struct DataWrapper {
+pub struct InboundDataWrapper {
     pub data: VecDeque<u8>,
     pub count: usize,
+    pub start: bool,
+    pub end: bool,
 }
 
-impl DataWrapper {
-    pub fn new(data: Vec<u8>) -> DataWrapper {
-        DataWrapper {
+impl InboundDataWrapper {
+    pub fn new(data: Vec<u8>) -> InboundDataWrapper {
+        InboundDataWrapper {
             data: data.into(),
             count: 0,
+            start: false,
+            end: false,
         }
     }
 }
 
-impl Iterator for DataWrapper {
+impl Iterator for InboundDataWrapper {
     type Item = u8;
 
     fn next(&mut self) -> Option<Self::Item> {
         let res: Option<u8>;
 
-        if self.count < 6 {
-            res = self.data.pop_front()
-        } else {
-            res = None
+        loop {
+            match self.data.pop_front() {
+                Some(o) => {
+                    if o == FLAGDELIMITER {
+                        if self.start {
+                            self.end = true;
+                            res = None;
+                            break;
+                        }
+                        self.start = true;
+                        continue;
+                    }
+                    res = Some(o);
+                }
+                None => {
+                    res = None;
+                }
+            };
+            break;
         }
         self.count += 1;
 
@@ -88,22 +109,22 @@ impl std::fmt::Display for Message {
 }
 
 impl Message {
-    pub fn parse_header(
+    fn parse_header(
         &mut self,
-        rawdata: &mut DataWrapper,
+        rawdata: &mut InboundDataWrapper,
     ) -> std::result::Result<(), NotOurProtocolError> {
-        let mut data = rawdata.data.clone().into_iter();
-        let first_byte = data.next().unwrap();
-        if first_byte != FLAGDELIMITER {
-            return Err(NotOurProtocolError);
-        };
-        let mut tmpid = vec![];
-        tmpid.push(data.next().unwrap());
-        tmpid.push(data.next().unwrap());
-        self.header.id = u16::from_be_bytes(tmpid.try_into().unwrap());
-        //self.header.id = ((data.next().unwrap() as u16) << 8) + data.next().unwrap() as u16;
+        let data = rawdata.into_iter();
+        self.header.id = u16::from_be_bytes(
+            vec![data.next().unwrap(), data.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
 
-        self.header.properties = ((data.next().unwrap() as u16) << 8) + data.next().unwrap() as u16;
+        self.header.properties = u16::from_be_bytes(
+            vec![data.next().unwrap(), data.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
         self.parse_properties();
 
         for i in 0..self.header.raw_terminal_id.len() {
@@ -111,8 +132,11 @@ impl Message {
         }
         self.parse_terminal_id();
 
-        self.header.serial_number =
-            ((data.next().unwrap() as u16) << 8) + data.next().unwrap() as u16;
+        self.header.serial_number = u16::from_be_bytes(
+            vec![data.next().unwrap(), data.next().unwrap()]
+                .try_into()
+                .unwrap(),
+        );
 
         for _ in 0..self.header.bodylength as usize {
             self.body.push(data.next().unwrap());
@@ -120,14 +144,11 @@ impl Message {
 
         self.checksum = data.next().unwrap();
 
-        if data.next().unwrap() != FLAGDELIMITER {
-            return Err(NotOurProtocolError);
-        }
         self.parse_body();
         Ok(())
     }
 
-    pub fn parse_properties(&mut self) {
+    fn parse_properties(&mut self) {
         self.header.bodylength = (self.header.properties & PROPS_SIZE_MASK) as u8;
         self.header.encryption =
             ((self.header.properties & PROPS_DATAENCRYPTION_MASK) as u16 >> 10) as u8;
@@ -137,36 +158,29 @@ impl Message {
         self.header.reserved = ((self.header.properties & PROPS_RESERVED_MASK) as u16 >> 14) as u16;
     }
 
-    pub fn parse_terminal_id(&mut self) {
+    fn parse_terminal_id(&mut self) {
         let code = BcdNumber::try_from(&self.header.raw_terminal_id as &[u8]).unwrap();
         self.header.terminal_id = code.to_u64().unwrap();
     }
 
-    pub fn check(&mut self, rawdata: &mut DataWrapper) {
-        let mut data = rawdata.data.iter();
-        data.next().unwrap();
+    pub fn inbound_check(&mut self, rawdata: &mut InboundDataWrapper) {
+        let data = rawdata.into_iter();
         let mut check: u8 = 0;
 
-        loop {
-            let b = data.next().unwrap();
-            if *b == FLAGDELIMITER {
-                break;
-            }
-            check = *b ^ check;
-        }
+        let _ = data.map(|b| check ^= b);
 
-        self.validate(check);
+        self.inbound_validate(check);
     }
 
-    fn validate(&mut self, check: u8) {
+    fn inbound_validate(&mut self, check: u8) {
         self.valid = check == 0;
     }
 
-    pub fn is_valid(&self) -> bool {
+    fn _is_valid(&self) -> bool {
         self.valid
     }
 
-    pub fn parse_body(&mut self) {
+    fn parse_body(&mut self) {
         match self.header.id {
             TerminalUniversalResponse::ID => {
                 self.content = MessageType::TerminalUniversalResponse(
@@ -253,19 +267,57 @@ impl Message {
                 reply.header.serial_number = rng.gen();
                 reply.content = MessageType::PlatformUniversalResponse(cnt);
             }
+            MessageType::LocationInformationReport(t) => {
+                let cnt =
+                    t.generate_reply(LocationInformationReport::ID, inmsg.header.serial_number);
+                reply.header.id = PlatformUniversalResponse::ID;
+                reply.header.raw_terminal_id = inmsg.header.raw_terminal_id;
+                reply.header.properties = cnt.to_raw().len() as u16;
+                reply.header.serial_number = rng.gen();
+                reply.content = MessageType::PlatformUniversalResponse(cnt);
+            }
+            MessageType::TerminalHeartbeat(t) => {
+                let cnt = t.generate_reply(TerminalHeartbeat::ID, inmsg.header.serial_number);
+                reply.header.id = PlatformUniversalResponse::ID;
+                reply.header.raw_terminal_id = inmsg.header.raw_terminal_id;
+                reply.header.properties = cnt.to_raw().len() as u16;
+                reply.header.serial_number = rng.gen();
+                reply.content = MessageType::PlatformUniversalResponse(cnt);
+            }
             _ => {
                 println!("no type");
                 return None;
             }
         }
+        reply.outbound_finalize();
         Some(reply)
     }
 
-    pub fn to_raw(&self) -> VecDeque<u8> {
-        let mut resp: VecDeque<u8> = vec![].into();
+    pub fn store(inmsg: &Message) {
+        match inmsg.content {
+            MessageType::LocationInformationReport(ref t) => {
+                println!("{:?}", t);
+            }
+            _ => {}
+        }
+    }
 
+    pub fn outbound_finalize(&mut self) {
         let mut checksum: u8 = 0;
 
+        for v in vec![self.header.to_raw(), self.content.to_raw()] {
+            for b in v {
+                checksum = checksum ^ b;
+            }
+        }
+
+        self.checksum = checksum;
+        self.valid = true;
+    }
+
+    pub fn to_raw(&mut self) -> VecDeque<u8> {
+        let mut resp: VecDeque<u8> = vec![].into();
+
         for b in self.header.to_raw() {
             resp.push_back(b);
         }
@@ -274,11 +326,7 @@ impl Message {
             resp.push_back(b);
         }
 
-        for b in resp.iter() {
-            checksum = checksum ^ b;
-        }
-
-        resp.push_back(checksum);
+        resp.push_back(self.checksum);
 
         resp.push_front(FLAGDELIMITER);
         resp.push_back(FLAGDELIMITER);
@@ -371,23 +419,3 @@ impl std::fmt::Display for MessageType {
         write!(f, "{:?}", self)
     }
 }
-
-/*
-macro_rules! generate_switch {
-    ($($t:ty),*) => {
-        $(
-        //impl BodyMessage for $t {
-        //    fn build() {}
-        //    fn body_to_iter<'a>(&'a self, rawbody: &'a Vec<u8>) -> std::slice::Iter<'a, u8> {
-        //        rawbody.into_iter()
-        //    }
-        //}
-        impl $t {
-            pub fn new(rawbody: &Vec<u8>) -> Self {
-                let mut res = Self::default();
-                res.parse(rawbody);
-                res
-            }
-        })*
-    };
-}*/