Give the message structs friendlier field names on the Rust side, because Serde lets us do that

src/net/mod.rs

@@ -15,11 +15,22 @@ pub type GameState = Value;
 #[serde(tag = "t")]
 pub enum ClientMessage {
     #[serde(rename = "s")]
-    SetState { s: GameState },
+    SetState {
+        #[serde(rename = "s")]
+        new_state: GameState
+    },
     #[serde(rename = "i")]
-    Input { i: PlayerInput },
+    Input {
+        #[serde(rename = "i")]
+        local_input: PlayerInput
+    },
     #[serde(rename = "g")]
-    GetState { c: usize, s: GameState },
+    GetState {
+        #[serde(rename = "c")]
+        cookie: usize,
+        #[serde(rename = "s")]
+        state: GameState
+    },
 }
 
 #[derive(Serialize, Debug, Clone)]
@@ -34,12 +45,24 @@ pub enum ServerMessage {
     #[serde(rename = "m")]
     Meta {
         #[serde(flatten)]
-        m: Meta,
+        #[serde(rename = "m")]
+        meta: Meta,
     },
     #[serde(rename = "s")]
-    SetState { u: Option<PlayerId>, s: GameState },
+    SetState {
+        #[serde(rename = "u")]
+        player_id: Option<PlayerId>,
+        #[serde(rename = "s")]
+        state: GameState
+    },
     #[serde(rename = "i")]
-    Input { i: Vec<PlayerInput> },
+    Input {
+        #[serde(rename = "i")]
+        total_input: Vec<PlayerInput>
+    },
     #[serde(rename = "g")]
-    GetState { c: usize },
+    GetState {
+        #[serde(rename = "c")]
+        cookie: usize
+    },
 }

src/net/server.rs

@@ -16,14 +16,14 @@ const CHANNEL_BUFFER: usize = 200;
 pub async fn greet(sink: &mut Sender<ServerMessage>) -> Result<()> {
     let mut greeting = iter(vec![
         ServerMessage::Meta {
-            m: Meta {
+            meta: Meta {
                 version: "Unstable",
                 helo: Some("Dedicated base2020 server".into()),
             },
         },
         ServerMessage::SetState {
-            u: Some(0),
+            player_id: Some(0),
-            s: json!({}),
+            state: json!({}),
         },
     ])
     .map(Ok);