usimp websocket things

src/websocket/mod.rs

@@ -1,5 +1,6 @@
 mod handler;
 
+use serde::{Deserialize, Serialize};
 use crate::error::Error;
 use crate::http;
 pub use handler::*;
@@ -45,6 +46,21 @@ pub struct TextMessage {
     data: String,
 }
 
+#[derive(Serialize, Deserialize)]
+pub struct RequestEnvelope {
+    endpoint: String,
+    request_nr: u64,
+    data: serde_json::Value,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct ResponseEnvelope {
+    to_request_nr: u64,
+    status: String,
+    message: Option<String>,
+    data: serde_json::Value,
+}
+
 impl FrameHeader {
     pub fn from(socket: &mut http::Stream) -> Result<Self, Error> {
         let mut data = [0u8; 2];