diff --git a/src/lib.rs b/src/lib.rs
index a884ded..4602de6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,9 +3,11 @@ pub mod proto;
 use std::{
     fmt::Debug,
     io::{self, BufWriter, Read, Write},
-    net::{TcpStream, ToSocketAddrs},
+    net::TcpStream,
 };
 
+use crate::proto::TLSPlaintext;
+
 type Result<T, E = Error> = std::result::Result<T, E>;
 
 pub struct ClientConnection {}
@@ -54,7 +56,12 @@ impl ClientSetupConnection {
 
         println!("hello!");
         let out = proto::TLSPlaintext::read(stream.get_mut())?;
-        dbg!(out);
+        dbg!(&out);
+
+        if matches!(out, TLSPlaintext::Handshake { handshake } if handshake.is_hello_retry_request())
+        {
+            println!("hello retry request, the server doesnt like us :(");
+        }
 
         // let res: proto::TLSPlaintext = proto::Value::read(&mut stream.get_mut())?;
         // dbg!(res);
@@ -76,7 +83,6 @@ pub enum ErrorKind {
 
 impl From<io::Error> for Error {
     fn from(value: io::Error) -> Self {
-        panic!("io error: {value}");
         Self {
             kind: ErrorKind::Io(value),
         }
@@ -85,7 +91,6 @@ impl From<io::Error> for Error {
 
 impl From<ErrorKind> for Error {
     fn from(value: ErrorKind) -> Self {
-        panic!("error: {value:?}");
         Self { kind: value }
     }
 }
diff --git a/src/proto.rs b/src/proto.rs
index 3b58dde..762a8da 100644
--- a/src/proto.rs
+++ b/src/proto.rs
@@ -1,14 +1,14 @@
+mod ser_de;
+
 use std::{
     fmt::Debug,
     io::{self, Read, Write},
-    marker::PhantomData,
-    num::TryFromIntError,
 };
 
-use byteorder::{BigEndian as B, ReadBytesExt, WriteBytesExt};
-
 use crate::ErrorKind;
 
+use self::ser_de::{proto_enum, proto_struct, u24, List, Todo, Value};
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum TLSPlaintext {
     Invalid {
@@ -280,355 +280,11 @@ proto_enum! {
     }
 }
 
-macro_rules! proto_struct {
-    {$(#[$meta:meta])* pub struct $name:ident {
-        $(
-            $field_name:ident : $field_ty:ty,
-        )*
-    }} => {
-        $(#[$meta])*
-        pub struct $name {
-            $(
-                $field_name: $field_ty,
-            )*
-        }
-
-
-        impl Value for $name {
-            fn write<W: Write>(&self, mut w: &mut W) -> io::Result<()> {
-                $(
-                    Value::write(&self.$field_name, &mut w)?;
-                )*
-                Ok(())
-            }
-
-            fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-                let ( $( $field_name ),* ) = ($( { discard!($field_name); Value::read(r)? } ),*);
-
-                Ok(Self {
-                    $(
-                        $field_name,
-                    )*
-                })
-            }
-
-            fn byte_size(&self) -> usize {
-                $( self.$field_name.byte_size() + )* 0
-            }
-        }
-    };
-}
-use proto_struct;
-
-macro_rules! proto_enum {
-    {$(#[$meta:meta])* pub enum $name:ident: $discr_ty:ty $( ,(length: $len_ty:ty) )? {
-        $(
-            $KindName:ident $({
-                $(
-                    $field_name:ident : $field_ty:ty,
-                )*
-            })? = $discriminant:expr,
-        )*
-    }} => {
-        $(#[$meta])*
-        pub enum $name {
-            $(
-                $KindName $({
-                    $(
-                        $field_name: $field_ty,
-                    )*
-                })?,
-            )*
-        }
-
-        impl Value for $name {
-            fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-                w.flush()?;
-                eprintln!("{}", stringify!($name));
-                mod discr_consts {
-                    $(
-                        #[allow(non_upper_case_globals)]
-                        pub(super) const $KindName: $discr_ty = $discriminant;
-                    )*
-                }
-
-                let write_len = |_w: &mut W, _len: usize| -> io::Result<()> {
-                    _w.flush()?;
-                    eprintln!("length");
-                    $(
-                        <$len_ty>::try_from(_len).unwrap().write(_w)?;
-                    )?
-                    Ok(())
-                };
-
-                match self {
-                    $(
-                        Self::$KindName $( {
-                            $( $field_name, )*
-                        } )? => {
-                            let byte_size = $($( $field_name.byte_size() + )*)? 0;
-
-                            Value::write(&discr_consts::$KindName, w)?;
-                            write_len(w, byte_size)?;
-
-                            let w = &mut MeasuringWriter(0, w);
-
-                            $($(
-                                w.flush()?;
-                                eprintln!("{}", stringify!($field_name));
-                                Value::write($field_name, w)?;
-                            )*)?
-
-                            debug_assert_eq!(w.0, byte_size);
-
-                            Ok(())
-                        }
-                    )*
-                }
-            }
-
-            fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-                mod discr_consts {
-                    $(
-                        #[allow(non_upper_case_globals)]
-                        pub(super) const $KindName: $discr_ty = $discriminant;
-                    )*
-                }
-
-                let kind: $discr_ty = Value::read(r)?;
-
-                $(
-                    let _len = <$len_ty>::read(r)?;
-                )?
-
-                match kind {
-                    $(
-                        discr_consts::$KindName => {
-                            #[allow(unused_parens)]
-                            $(let ( $( $field_name ),* ) = ($( { discard!($field_name); Value::read(r)? } ),*);)?
-
-                            Ok(Self::$KindName $({
-                                $(
-                                    $field_name,
-                                )*
-                            })*)
-                        },
-                    )*
-
-                    _ => Err(ErrorKind::InvalidFrame(Box::new(format!("invalid discriminant for {}: 0x{kind:x?}", stringify!($name)))).into()),
-                }
-            }
-
-            fn byte_size(&self) -> usize {
-                mod discr_consts {
-                    $(
-                        #[allow(non_upper_case_globals)]
-                        pub(super) const $KindName: $discr_ty = $discriminant;
-                    )*
-                }
-
-                $( <$len_ty>::default().byte_size() + )? match self {
-                    $(
-                        Self::$KindName $( {
-                            $( $field_name, )*
-                        } )? => {
-                            $( $( $field_name.byte_size() + )* )? discr_consts::$KindName.byte_size()
-                        }
-                    )*
-                }
-            }
-        }
-    };
-}
-use proto_enum;
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub struct Todo;
-
-impl Value for Todo {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        todo!()
-    }
-
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        todo!()
-    }
-
-    fn byte_size(&self) -> usize {
-        todo!()
+impl Handshake {
+    pub fn is_hello_retry_request(&self) -> bool {
+        matches!(self, Handshake::ServerHello { random, .. } if random == &HELLO_RETRY_REQUEST)
     }
 }
 
-#[derive(Clone, PartialEq, Eq)]
-pub struct List<T, Len>(Vec<T>, PhantomData<Len>);
-
-impl<T, Len: Value> From<Vec<T>> for List<T, Len> {
-    fn from(value: Vec<T>) -> Self {
-        Self(value, PhantomData)
-    }
-}
-
-impl<T: Debug, Len> Debug for List<T, Len> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_list().entries(self.0.iter()).finish()
-    }
-}
-
-impl<T: Value, Len: Value + Into<usize> + TryFrom<usize> + Default> Value for List<T, Len> {
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        let mut remaining_byte_size = Len::read(r)?.into();
-        let mut v = Vec::new();
-
-        while remaining_byte_size > 0 {
-            let value = T::read(r)?;
-            remaining_byte_size -= value.byte_size();
-            v.push(value);
-        }
-        Ok(Self(v, PhantomData))
-    }
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        let byte_size = self.0.iter().map(Value::byte_size).sum::<usize>();
-        Len::write(
-            &byte_size
-                .try_into()
-                .unwrap_or_else(|_| panic!("list is too large for domain: {}", self.0.len())),
-            w,
-        )?;
-        for elem in &self.0 {
-            elem.write(w)?;
-        }
-        Ok(())
-    }
-    fn byte_size(&self) -> usize {
-        Len::byte_size(&Default::default()) + self.0.iter().map(Value::byte_size).sum::<usize>()
-    }
-}
-
-pub trait Value: Sized + std::fmt::Debug {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()>;
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self>;
-    fn byte_size(&self) -> usize;
-}
-
-impl<V: Value, const N: usize> Value for [V; N] {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        self.iter().try_for_each(|v| Value::write(v, w))
-    }
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        // ugly :(
-        let mut values = Vec::with_capacity(N);
-        for _ in 0..N {
-            let value = V::read(r)?;
-            values.push(value);
-        }
-        Ok(values.try_into().unwrap())
-    }
-    fn byte_size(&self) -> usize {
-        self.iter().map(Value::byte_size).sum()
-    }
-}
-
-impl Value for u8 {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        w.write_u8(*self)
-    }
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        r.read_u8().map_err(Into::into)
-    }
-    fn byte_size(&self) -> usize {
-        1
-    }
-}
-
-impl Value for u16 {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        w.write_u16::<B>(*self)
-    }
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        r.read_u16::<B>().map_err(Into::into)
-    }
-    fn byte_size(&self) -> usize {
-        2
-    }
-}
-
-impl Value for u32 {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        w.write_u32::<B>(*self)
-    }
-
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        r.read_u32::<B>().map_err(Into::into)
-    }
-
-    fn byte_size(&self) -> usize {
-        4
-    }
-}
-
-impl<T: Value, U: Value> Value for (T, U) {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        T::write(&self.0, w)?;
-        T::write(&self.0, w)?;
-        Ok(())
-    }
-
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        Ok((T::read(r)?, U::read(r)?))
-    }
-
-    fn byte_size(&self) -> usize {
-        self.0.byte_size() + self.1.byte_size()
-    }
-}
-
-#[derive(Debug, Clone, Copy, Default)]
-#[allow(non_camel_case_types)]
-struct u24(u32);
-
-impl Value for u24 {
-    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
-        w.write_u24::<B>(self.0)
-    }
-
-    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
-        r.read_u24::<B>().map_err(Into::into).map(u24)
-    }
-
-    fn byte_size(&self) -> usize {
-        3
-    }
-}
-
-impl TryFrom<usize> for u24 {
-    type Error = TryFromIntError;
-    fn try_from(value: usize) -> Result<Self, Self::Error> {
-        let value = u32::try_from(value)?;
-        if value > 2_u32.pow(24) {
-            return Err(u32::try_from(usize::MAX).unwrap_err());
-        }
-        Ok(u24(value))
-    }
-}
-
-struct MeasuringWriter<W>(usize, W);
-
-impl<W: Write> Write for MeasuringWriter<W> {
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        let len = self.1.write(buf)?;
-        self.0 += len;
-        Ok(len)
-    }
-
-    fn flush(&mut self) -> io::Result<()> {
-        self.1.flush()
-    }
-}
-
-macro_rules! discard {
-    ($($tt:tt)*) => {};
-}
-use discard;
-
 #[cfg(test)]
 mod tests;
diff --git a/src/proto/ser_de.rs b/src/proto/ser_de.rs
new file mode 100644
index 0000000..4cf3041
--- /dev/null
+++ b/src/proto/ser_de.rs
@@ -0,0 +1,358 @@
+use byteorder::{BigEndian as B, ReadBytesExt, WriteBytesExt};
+use std::fmt::Debug;
+
+macro_rules! proto_struct {
+    {$(#[$meta:meta])* pub struct $name:ident {
+        $(
+            $field_name:ident : $field_ty:ty,
+        )*
+    }} => {
+        $(#[$meta])*
+        pub struct $name {
+            $(
+                $field_name: $field_ty,
+            )*
+        }
+
+
+        impl crate::proto::ser_de::Value for $name {
+            fn write<W: Write>(&self, mut w: &mut W) -> io::Result<()> {
+                $(
+                    crate::proto::ser_de::Value::write(&self.$field_name, &mut w)?;
+                )*
+                Ok(())
+            }
+
+            fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+                let ( $( $field_name ),* ) = ($( { crate::proto::ser_de::discard!($field_name); crate::proto::ser_de::Value::read(r)? } ),*);
+
+                Ok(Self {
+                    $(
+                        $field_name,
+                    )*
+                })
+            }
+
+            fn byte_size(&self) -> usize {
+                $( self.$field_name.byte_size() + )* 0
+            }
+        }
+    };
+}
+use std::{
+    io::{self, Read, Write},
+    marker::PhantomData,
+    num::TryFromIntError,
+};
+
+pub(crate) use proto_struct;
+
+macro_rules! proto_enum {
+    {$(#[$meta:meta])* pub enum $name:ident: $discr_ty:ty $( ,(length: $len_ty:ty) )? {
+        $(
+            $KindName:ident $({
+                $(
+                    $field_name:ident : $field_ty:ty,
+                )*
+            })? = $discriminant:expr,
+        )*
+    }} => {
+        $(#[$meta])*
+        pub enum $name {
+            $(
+                $KindName $({
+                    $(
+                        $field_name: $field_ty,
+                    )*
+                })?,
+            )*
+        }
+
+        impl crate::proto::ser_de::Value for $name {
+            fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+                w.flush()?;
+                eprintln!("{}", stringify!($name));
+                mod discr_consts {
+                    $(
+                        #[allow(non_upper_case_globals)]
+                        pub(super) const $KindName: $discr_ty = $discriminant;
+                    )*
+                }
+
+                let write_len = |_w: &mut W, _len: usize| -> io::Result<()> {
+                    _w.flush()?;
+                    eprintln!("length");
+                    $(
+                        <$len_ty>::try_from(_len).unwrap().write(_w)?;
+                    )?
+                    Ok(())
+                };
+
+                match self {
+                    $(
+                        Self::$KindName $( {
+                            $( $field_name, )*
+                        } )? => {
+                            let byte_size = $($( $field_name.byte_size() + )*)? 0;
+
+                            crate::proto::ser_de::Value::write(&discr_consts::$KindName, w)?;
+                            write_len(w, byte_size)?;
+
+                            let w = &mut crate::proto::ser_de::MeasuringWriter(0, w);
+
+                            $($(
+                                w.flush()?;
+                                eprintln!("{}", stringify!($field_name));
+                                crate::proto::ser_de::Value::write($field_name, w)?;
+                            )*)?
+
+                            debug_assert_eq!(w.0, byte_size);
+
+                            Ok(())
+                        }
+                    )*
+                }
+            }
+
+            fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+                mod discr_consts {
+                    $(
+                        #[allow(non_upper_case_globals)]
+                        pub(super) const $KindName: $discr_ty = $discriminant;
+                    )*
+                }
+
+                let kind: $discr_ty = crate::proto::ser_de::Value::read(r)?;
+
+                $(
+                    let _len = <$len_ty>::read(r)?;
+                )?
+
+                match kind {
+                    $(
+                        discr_consts::$KindName => {
+                            #[allow(unused_parens)]
+                            $(let ( $( $field_name ),* ) = ($( { crate::proto::ser_de::discard!($field_name); crate::proto::ser_de::Value::read(r)? } ),*);)?
+
+                            Ok(Self::$KindName $({
+                                $(
+                                    $field_name,
+                                )*
+                            })*)
+                        },
+                    )*
+
+                    _ => Err(ErrorKind::InvalidFrame(Box::new(format!("invalid discriminant for {}: 0x{kind:x?}", stringify!($name)))).into()),
+                }
+            }
+
+            fn byte_size(&self) -> usize {
+                mod discr_consts {
+                    $(
+                        #[allow(non_upper_case_globals)]
+                        pub(super) const $KindName: $discr_ty = $discriminant;
+                    )*
+                }
+
+                $( <$len_ty>::default().byte_size() + )? match self {
+                    $(
+                        Self::$KindName $( {
+                            $( $field_name, )*
+                        } )? => {
+                            $( $( $field_name.byte_size() + )* )? discr_consts::$KindName.byte_size()
+                        }
+                    )*
+                }
+            }
+        }
+    };
+}
+pub(crate) use proto_enum;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Todo;
+
+impl Value for Todo {
+    fn write<W: Write>(&self, _: &mut W) -> io::Result<()> {
+        todo!()
+    }
+
+    fn read<R: Read>(_: &mut R) -> crate::Result<Self> {
+        todo!()
+    }
+
+    fn byte_size(&self) -> usize {
+        todo!()
+    }
+}
+
+#[derive(Clone, PartialEq, Eq)]
+pub struct List<T, Len>(Vec<T>, PhantomData<Len>);
+
+impl<T, Len: Value> From<Vec<T>> for List<T, Len> {
+    fn from(value: Vec<T>) -> Self {
+        Self(value, PhantomData)
+    }
+}
+
+impl<T: Debug, Len> Debug for List<T, Len> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_list().entries(self.0.iter()).finish()
+    }
+}
+
+impl<T: Value, Len: Value + Into<usize> + TryFrom<usize> + Default> Value for List<T, Len> {
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        let mut remaining_byte_size = Len::read(r)?.into();
+        let mut v = Vec::new();
+
+        while remaining_byte_size > 0 {
+            let value = T::read(r)?;
+            remaining_byte_size -= value.byte_size();
+            v.push(value);
+        }
+        Ok(Self(v, PhantomData))
+    }
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        let byte_size = self.0.iter().map(Value::byte_size).sum::<usize>();
+        Len::write(
+            &byte_size
+                .try_into()
+                .unwrap_or_else(|_| panic!("list is too large for domain: {}", self.0.len())),
+            w,
+        )?;
+        for elem in &self.0 {
+            elem.write(w)?;
+        }
+        Ok(())
+    }
+    fn byte_size(&self) -> usize {
+        Len::byte_size(&Default::default()) + self.0.iter().map(Value::byte_size).sum::<usize>()
+    }
+}
+
+pub trait Value: Sized + std::fmt::Debug {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()>;
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self>;
+    fn byte_size(&self) -> usize;
+}
+
+impl<V: Value, const N: usize> Value for [V; N] {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        self.iter().try_for_each(|v| Value::write(v, w))
+    }
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        // ugly :(
+        let mut values = Vec::with_capacity(N);
+        for _ in 0..N {
+            let value = V::read(r)?;
+            values.push(value);
+        }
+        Ok(values.try_into().unwrap())
+    }
+    fn byte_size(&self) -> usize {
+        self.iter().map(Value::byte_size).sum()
+    }
+}
+
+impl Value for u8 {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        w.write_u8(*self)
+    }
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        r.read_u8().map_err(Into::into)
+    }
+    fn byte_size(&self) -> usize {
+        1
+    }
+}
+
+impl Value for u16 {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        w.write_u16::<B>(*self)
+    }
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        r.read_u16::<B>().map_err(Into::into)
+    }
+    fn byte_size(&self) -> usize {
+        2
+    }
+}
+
+impl Value for u32 {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        w.write_u32::<B>(*self)
+    }
+
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        r.read_u32::<B>().map_err(Into::into)
+    }
+
+    fn byte_size(&self) -> usize {
+        4
+    }
+}
+
+impl<T: Value, U: Value> Value for (T, U) {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        T::write(&self.0, w)?;
+        T::write(&self.0, w)?;
+        Ok(())
+    }
+
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        Ok((T::read(r)?, U::read(r)?))
+    }
+
+    fn byte_size(&self) -> usize {
+        self.0.byte_size() + self.1.byte_size()
+    }
+}
+
+#[derive(Debug, Clone, Copy, Default)]
+#[allow(non_camel_case_types)]
+pub struct u24(u32);
+
+impl Value for u24 {
+    fn write<W: Write>(&self, w: &mut W) -> io::Result<()> {
+        w.write_u24::<B>(self.0)
+    }
+
+    fn read<R: Read>(r: &mut R) -> crate::Result<Self> {
+        r.read_u24::<B>().map_err(Into::into).map(u24)
+    }
+
+    fn byte_size(&self) -> usize {
+        3
+    }
+}
+
+impl TryFrom<usize> for u24 {
+    type Error = TryFromIntError;
+    fn try_from(value: usize) -> Result<Self, Self::Error> {
+        let value = u32::try_from(value)?;
+        if value > 2_u32.pow(24) {
+            return Err(u32::try_from(usize::MAX).unwrap_err());
+        }
+        Ok(u24(value))
+    }
+}
+
+pub(crate) struct MeasuringWriter<W>(pub(crate) usize, pub(crate) W);
+
+impl<W: Write> Write for MeasuringWriter<W> {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        let len = self.1.write(buf)?;
+        self.0 += len;
+        Ok(len)
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        self.1.flush()
+    }
+}
+
+macro_rules! discard {
+    ($($tt:tt)*) => {};
+}
+pub(crate) use discard;