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add WebSocket support for real-time status updates

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RaffaelW 2025-04-17 22:35:26 +02:00
parent c0da3a6af1
commit e256d16f8d
8 changed files with 112 additions and 30 deletions
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52
src/websocket.cpp Normal file
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#include "websocket.h"
AsyncWebSocket ws("/ws");
long webSocketLastUpdate = 0;
const int WS_UPDATE_INTERVAL = 10 * 1000; // 10 seconds
String buildStatusString()
{
JsonDocument doc;
doc["type"] = "status";
doc["data"] = buildStatusJson();
String jsonString = "";
serializeJson(doc, jsonString);
return jsonString;
}
void onEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len)
{
switch (type)
{
case WS_EVT_CONNECT:
Serial.printf("[WS] Client %u connected from %s\n", client->id(), client->remoteIP().toString().c_str());
// directly send status to client
ws.text(client->id(), buildStatusString());
break;
case WS_EVT_DISCONNECT:
Serial.printf("[WS] Client %u disconnected\n", client->id());
break;
case WS_EVT_DATA:
Serial.printf("[WS] Data received from client %u: %s\n", client->id(), (char *)data);
break;
default:
break;
}
}
void webSocketLoop()
{
if (millis() - webSocketLastUpdate > WS_UPDATE_INTERVAL)
{
ws.textAll(buildStatusString());
webSocketLastUpdate = millis();
}
}
void initWebSocket(AsyncWebServer *server)
{
ws.onEvent(onEvent);
server->addHandler(&ws);
}