Now it works. It was endianness

Cargo.lock

@@ -6,6 +6,12 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
+[[package]]
+name = "byteorder"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae44d1a3d5a19df61dd0c8beb138458ac2a53a7ac09eba97d55592540004306b"
+
 [[package]]
 name = "bytes"
 version = "1.0.1"
@@ -92,6 +98,7 @@ checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 name = "point-generator"
 version = "0.0.1"
 dependencies = [
+ "byteorder",
  "bytes",
  "rand",
  "zmq",

Cargo.toml

@@ -14,6 +14,7 @@ path = "src/main.rs"
 
 [dependencies]
 bytes = "1.0.1"
+byteorder = "1.4.2"
 rand = "0.8.2"
 zmq = { version = "0.9", features = ['vendored'] }
 #zeromq = "0.2.0" # Doesn't compile. Complains about Rust issue #54727

src/main.rs

@@ -31,7 +31,7 @@ fn main() {
   let mut messaging_state = MessagingState::Sending;
 
   loop {
-    let point = Point::at_random_range(-1.0f32, 1.0f32, Color::Blue);
+    let point = Point::at_random_range(-1000.0f32, 1000.0f32, Color::Blue);
     let bytes = point.to_bytes();
     println!("Point : {}", point.debug_string());
 

src/point.rs

@@ -2,6 +2,7 @@ use bytes::{BytesMut, BufMut};
 use rand::distributions::Uniform;
 use rand::Rng;
 use crate::color::Color;
+use byteorder::{WriteBytesExt, LittleEndian, BigEndian};
 
 
 pub struct Point {
@@ -64,7 +65,7 @@ impl Point {
 
 
   pub fn to_bytes(&self) -> Vec<u8> {
-    let mut buf = BytesMut::with_capacity(32);
+    /*let mut buf = BytesMut::with_capacity(32);
     buf.put_f32(self.x);
     buf.put_f32(self.y);
     buf.put_f32(self.z);
@@ -77,7 +78,17 @@ impl Point {
     buf.put_u32(self.g);
     buf.put_u32(self.b);
     buf.put_u32(self.a);
-    buf.to_vec()
+    buf.to_vec()*/
+    let mut buf = Vec::with_capacity(32);
+    buf.write_f32::<LittleEndian>(self.x);
+    buf.write_f32::<LittleEndian>(self.y);
+    buf.write_f32::<LittleEndian>(self.z);
+    buf.write_f32::<LittleEndian>(0.0f32);
+    buf.write_u32::<LittleEndian>(self.r);
+    buf.write_u32::<LittleEndian>(self.g);
+    buf.write_u32::<LittleEndian>(self.b);
+    buf.write_u32::<LittleEndian>(self.a);
+    buf
   }
 
   pub fn location_string(&self) -> String {