init

.gitignore

@@ -1,3 +1,7 @@
+**/*.mod
+**/*.sum
+
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

go/server.go

@@ -0,0 +1,71 @@
+// Copyright 2015 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+var addr = flag.String("addr", "localhost:8080", "http service address")
+
+var upgrader = websocket.Upgrader{
+	ReadBufferSize:  2048,
+	WriteBufferSize: 2048,
+}
+
+type Pixel struct {
+	X         uint16 `json:"x"`
+	Y         uint16 `json:"y"`
+	Color     uint8  `json:"color"`
+	Timestamp int64  `json:"timestamp"`
+	UserID    uint64 `json:"userid"`
+}
+
+func JsonToStruct(input []byte) Pixel {
+	pixel := Pixel{}
+	json.Unmarshal(input, &pixel)
+	return pixel
+}
+
+func serve(w http.ResponseWriter, r *http.Request) {
+	c, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		log.Print("error while upgrading", err)
+		return
+	}
+	defer c.Close()
+	for {
+		mt, message, err := c.ReadMessage()
+		if err != nil {
+			//log.Println("read:", err)
+			break
+		}
+		pixel := JsonToStruct(message)
+
+		tm := time.Unix(pixel.Timestamp, 0)
+		log.Println(tm)
+		err = c.WriteMessage(mt, message)
+		if err != nil {
+			//log.Println("write:", err)
+			break
+		}
+	}
+}
+
+func main() {
+	flag.Parse()
+	log.SetFlags(0)
+	http.HandleFunc("/", serve)
+	log.Fatal(http.ListenAndServe(*addr, nil))
+}

go/util.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"encoding/json"
+)
+
+type Pixel struct {
+	X         uint16 `json:"x"`
+	Y         uint16 `json:"y"`
+	Color     uint8  `json:"color"`
+	Timestamp uint64 `json:"timestamp"`
+	UserID    uint64 `json:"userid"`
+}
+
+func JsonToStruct(input []byte) Pixel {
+	pixel := Pixel{}
+	json.Unmarshal(input, &pixel)
+	return pixel
+}

python/clients.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+import asyncio
+from dataclasses import dataclass
+import datetime
+
+import json
+import time
+
+import websockets
+
+
+@dataclass
+class pixel:
+    x: int
+    y: int
+    color: int
+    timestamp: int
+    userid: int
+
+
+async def main():
+    message = pixel(
+        x=0,
+        y=1,
+        color=0,
+        timestamp=int(time.time()),
+        userid=0,
+    )
+    async with websockets.connect("ws://localhost:8080") as websocket:
+        print(message)
+        await websocket.send(json.dumps(message.__dict__))
+        await websocket.recv()
+
+
+if __name__ == "__main__":
+    asyncio.get_event_loop().run_until_complete(main())

python/requirements.txt

@@ -0,0 +1,3 @@
+websockets
+numpy
+matplotlib