GURT protocol (lib, cli, gdextension, Flumi integration)

protocol/library/src/error.rs

@@ -0,0 +1,71 @@
+use std::fmt;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum GurtError {
+    #[error("IO error: {0}")]
+    Io(#[from] std::io::Error),
+    
+    #[error("Serialization error: {0}")]
+    Serialization(#[from] serde_json::Error),
+    
+    #[error("Cryptographic error: {0}")]
+    Crypto(String),
+    
+    #[error("Protocol error: {0}")]
+    Protocol(String),
+    
+    #[error("Invalid message format: {0}")]
+    InvalidMessage(String),
+    
+    #[error("Connection error: {0}")]
+    Connection(String),
+    
+    #[error("Handshake failed: {0}")]
+    Handshake(String),
+    
+    #[error("Timeout error: {0}")]
+    Timeout(String),
+    
+    #[error("Server error: {status} {message}")]
+    Server { status: u16, message: String },
+    
+    #[error("Client error: {0}")]
+    Client(String),
+}
+
+pub type Result<T> = std::result::Result<T, GurtError>;
+
+impl GurtError {
+    pub fn crypto<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Crypto(msg.to_string())
+    }
+    
+    pub fn protocol<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Protocol(msg.to_string())
+    }
+    
+    pub fn invalid_message<T: fmt::Display>(msg: T) -> Self {
+        GurtError::InvalidMessage(msg.to_string())
+    }
+    
+    pub fn connection<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Connection(msg.to_string())
+    }
+    
+    pub fn handshake<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Handshake(msg.to_string())
+    }
+    
+    pub fn timeout<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Timeout(msg.to_string())
+    }
+    
+    pub fn server(status: u16, message: String) -> Self {
+        GurtError::Server { status, message }
+    }
+    
+    pub fn client<T: fmt::Display>(msg: T) -> Self {
+        GurtError::Client(msg.to_string())
+    }
+}