Add example request structure

4 files changed, 68 insertions, 0 deletions

diff --git a/src/field/data.rs b/src/field/data.rs
new file mode 100644
index 0000000..cd1341c
--- /dev/null
+++ b/src/field/data.rs
@@ -0,0 +1,24 @@
+use super::Field;
+use std::io::Result;
+
+pub struct Data {
+    value: Vec<u8>,
+}
+
+impl Field for Data {
+    const ID: u16 = 101;
+
+    fn size(&self) -> [u8; 2] {
+        (self.value.len() as u16).to_be_bytes()
+    }
+
+    fn serialize_data(&self) -> &Vec<u8> {
+        &self.value
+    }
+
+    fn deserialize(data: &[u8]) -> Result<Self> {
+        Ok(Data {
+            value: data.to_owned(),
+        })
+    }
+}
diff --git a/src/field/mod.rs b/src/field/mod.rs
new file mode 100644
index 0000000..82e8abd
--- /dev/null
+++ b/src/field/mod.rs
@@ -0,0 +1,21 @@
+use std::io::Result;
+mod data;
+
+pub use data::Data;
+
+pub trait Field: Sized {
+    const ID: u16;
+
+    fn size(&self) -> [u8; 2];
+    fn serialize_data(&self) -> &Vec<u8>;
+    fn deserialize(data: &[u8]) -> Result<Self>;
+    fn serialize(&self) -> Vec<u8> {
+        let mut result = Vec::new();
+
+        result.extend_from_slice(&Self::ID.to_be_bytes());
+        result.extend_from_slice(&self.size());
+        result.extend_from_slice(self.serialize_data());
+
+        result
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..397cbd2
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,4 @@
+//! `linea_caliente` implements the hotline protocol to help build servers and
+//! clients around it.
+pub mod field;
+pub mod transaction;
diff --git a/src/transaction/mod.rs b/src/transaction/mod.rs
new file mode 100644
index 0000000..b1cc12a
--- /dev/null
+++ b/src/transaction/mod.rs
@@ -0,0 +1,19 @@
+use crate::field::Data;
+
+pub enum Request {
+    GetMessages,
+    NewMessage { data: Data },
+    OldPostNews { data: Data },
+    ServerMessage,
+}
+
+impl Request {
+    pub fn get_type(&self) -> u8 {
+        match self {
+            Request::GetMessages => 101,
+            Request::NewMessage { data: _ } => 102,
+            Request::OldPostNews { data: _ } => 103,
+            Request::ServerMessage => 104,
+        }
+    }
+}