api: remove status cache validators

firmware/esp32/overland-controller/overland-controller.ino

@@ -1134,30 +1134,9 @@ int findStatusFieldIndex(const String& field) {
     return -1;
 }
 
-uint32_t fnv1a32(const String& value) {
-    uint32_t hash = 2166136261UL;
-    for (unsigned int i = 0; i < value.length(); i++) {
-        hash ^= static_cast<uint8_t>(value[i]);
-        hash *= 16777619UL;
-    }
-    return hash;
-}
 
-String statusEtagForPayload(const String& payload) {
-    return String("\"") + String(fnv1a32(payload), HEX) + "-" + String(payload.length(), HEX) + "\"";
-}
 
-String lastStatusValidatorEtag = "";
-String lastStatusModified = "Thu, 01 Jan 1970 00:00:00 GMT";
 
-String formatHttpDateFromUptime(unsigned long seconds) {
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "Thu, 01 Jan 1970 %02lu:%02lu:%02lu GMT",
-             (seconds / 3600UL) % 24UL,
-             (seconds / 60UL) % 60UL,
-             seconds % 60UL);
-    return String(buffer);
-}
 
 void buildStatusDocument(JsonDocument& doc) {
     doc["type"] = MSG_STATUS_RESPONSE;
@@ -2737,34 +2716,6 @@ void handleStatus() {
     String output;
     serializeJson(doc, output);
 
-    DynamicJsonDocument validatorDoc(4096);
-    deserializeJson(validatorDoc, output);
-    validatorDoc["timestamp"] = 0;
-    if (validatorDoc["system"].is<JsonObject>()) {
-        validatorDoc["system"]["uptime_seconds"] = 0;
-    }
-
-    String validatorPayload;
-    serializeJson(validatorDoc, validatorPayload);
-
-    String etag = statusEtagForPayload(validatorPayload);
-    if (etag != lastStatusValidatorEtag) {
-        lastStatusValidatorEtag = etag;
-        lastStatusModified = formatHttpDateFromUptime(millis() / 1000);
-    }
-
-    server.sendHeader("ETag", etag);
-    server.sendHeader("Last-Modified", lastStatusModified);
-    server.sendHeader("Cache-Control", "no-cache");
-
-    String ifNoneMatch = server.header("If-None-Match");
-    String ifModifiedSince = server.header("If-Modified-Since");
-
-    if (ifNoneMatch == etag || ifModifiedSince == lastStatusModified) {
-        server.send(304);
-        return;
-    }
-
     server.send(200, "application/json", output);
 }
 
@@ -2869,9 +2820,6 @@ void setup() {
     server.on("/bms/select", HTTP_POST, handleSelectBms);
 
 
-    const char* statusCacheHeaders[] = {"If-None-Match", "If-Modified-Since"};
-    server.collectHeaders(statusCacheHeaders, 2);
-
     server.begin();
 
     Serial.println("Web Server Started");