#include "block_notify.hpp" // Initialize static members esp_websocket_client_handle_t BlockNotify::wsClient = nullptr; uint32_t BlockNotify::currentBlockHeight = 878000; uint16_t BlockNotify::blockMedianFee = 1; bool BlockNotify::notifyInit = false; unsigned long int BlockNotify::lastBlockUpdate = 0; TaskHandle_t BlockNotify::taskHandle = nullptr; const char* BlockNotify::mempoolWsCert = R"EOF( -----BEGIN CERTIFICATE----- MIIF3jCCA8agAwIBAgIQAf1tMPyjylGoG7xkDjUDLTANBgkqhkiG9w0BAQwFADCB iDELMAkGA1UEBhMCVVMxEzARBgNVBAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0pl cnNleSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5ldHdvcmsxLjAsBgNV BAMTJVVTRVJUcnVzdCBSU0EgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNMTAw MjAxMDAwMDAwWhcNMzgwMTE4MjM1OTU5WjCBiDELMAkGA1UEBhMCVVMxEzARBgNV BAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0plcnNleSBDaXR5MR4wHAYDVQQKExVU aGUgVVNFUlRSVVNUIE5ldHdvcmsxLjAsBgNVBAMTJVVTRVJUcnVzdCBSU0EgQ2Vy dGlmaWNhdGlvbiBBdXRob3JpdHkwggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIK AoICAQCAEmUXNg7D2wiz0KxXDXbtzSfTTK1Qg2HiqiBNCS1kCdzOiZ/MPans9s/B 3PHTsdZ7NygRK0faOca8Ohm0X6a9fZ2jY0K2dvKpOyuR+OJv0OwWIJAJPuLodMkY tJHUYmTbf6MG8YgYapAiPLz+E/CHFHv25B+O1ORRxhFnRghRy4YUVD+8M/5+bJz/ Fp0YvVGONaanZshyZ9shZrHUm3gDwFA66Mzw3LyeTP6vBZY1H1dat//O+T23LLb2 VN3I5xI6Ta5MirdcmrS3ID3KfyI0rn47aGYBROcBTkZTmzNg95S+UzeQc0PzMsNT 79uq/nROacdrjGCT3sTHDN/hMq7MkztReJVni+49Vv4M0GkPGw/zJSZrM233bkf6 c0Plfg6lZrEpfDKEY1WJxA3Bk1QwGROs0303p+tdOmw1XNtB1xLaqUkL39iAigmT Yo61Zs8liM2EuLE/pDkP2QKe6xJMlXzzawWpXhaDzLhn4ugTncxbgtNMs+1b/97l c6wjOy0AvzVVdAlJ2ElYGn+SNuZRkg7zJn0cTRe8yexDJtC/QV9AqURE9JnnV4ee UB9XVKg+/XRjL7FQZQnmWEIuQxpMtPAlR1n6BB6T1CZGSlCBst6+eLf8ZxXhyVeE Hg9j1uliutZfVS7qXMYoCAQlObgOK6nyTJccBz8NUvXt7y+CDwIDAQABo0IwQDAd BgNVHQ4EFgQUU3m/WqorSs9UgOHYm8Cd8rIDZsswDgYDVR0PAQH/BAQDAgEGMA8G A1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQEMBQADggIBAFzUfA3P9wF9QZllDHPF Up/L+M+ZBn8b2kMVn54CVVeWFPFSPCeHlCjtHzoBN6J2/FNQwISbxmtOuowhT6KO VWKR82kV2LyI48SqC/3vqOlLVSoGIG1VeCkZ7l8wXEskEVX/JJpuXior7gtNn3/3 ATiUFJVDBwn7YKnuHKsSjKCaXqeYalltiz8I+8jRRa8YFWSQEg9zKC7F4iRO/Fjs 8PRF/iKz6y+O0tlFYQXBl2+odnKPi4w2r78NBc5xjeambx9spnFixdjQg3IM8WcR iQycE0xyNN+81XHfqnHd4blsjDwSXWXavVcStkNr/+XeTWYRUc+ZruwXtuhxkYze Sf7dNXGiFSeUHM9h4ya7b6NnJSFd5t0dCy5oGzuCr+yDZ4XUmFF0sbmZgIn/f3gZ XHlKYC6SQK5MNyosycdiyA5d9zZbyuAlJQG03RoHnHcAP9Dc1ew91Pq7P8yF1m9/ qS3fuQL39ZeatTXaw2ewh0qpKJ4jjv9cJ2vhsE/zB+4ALtRZh8tSQZXq9EfX7mRB VXyNWQKV3WKdwrnuWih0hKWbt5DHDAff9Yk2dDLWKMGwsAvgnEzDHNb842m1R0aB L6KCq9NjRHDEjf8tM7qtj3u1cIiuPhnPQCjY/MiQu12ZIvVS5ljFH4gxQ+6IHdfG jjxDah2nGN59PRbxYvnKkKj9 -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4 WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+ 0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ 3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5 ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq 4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc= -----END CERTIFICATE----- )EOF"; void BlockNotify::onWebsocketEvent(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data) { esp_websocket_event_data_t *data = (esp_websocket_event_data_t *)event_data; BlockNotify& instance = BlockNotify::getInstance(); switch (event_id) { case WEBSOCKET_EVENT_CONNECTED: { notifyInit = true; Serial.print(F("Connected to ")); Serial.println(preferences.getString("mempoolInstance", DEFAULT_MEMPOOL_INSTANCE)); JsonDocument doc; doc["action"] = "want"; JsonArray dataArray = doc.createNestedArray("data"); dataArray.add("blocks"); dataArray.add("mempool-blocks"); String sub; serializeJson(doc, sub); esp_websocket_client_send_text(wsClient, sub.c_str(), sub.length(), portMAX_DELAY); break; } case WEBSOCKET_EVENT_DATA: instance.onWebsocketMessage(data); break; case WEBSOCKET_EVENT_DISCONNECTED: Serial.println(F("Mempool.space WS Connection Closed")); break; case WEBSOCKET_EVENT_ERROR: Serial.println(F("Mempool.space WS Connection Error")); break; } } void BlockNotify::onWebsocketMessage(esp_websocket_event_data_t *data) { JsonDocument doc; JsonDocument filter; filter["block"]["height"] = true; filter["mempool-blocks"][0]["medianFee"] = true; deserializeJson(doc, (char*)data->data_ptr, DeserializationOption::Filter(filter)); if (doc["block"].is()) { JsonObject block = doc["block"]; if (block["height"].as() != currentBlockHeight) { processNewBlock(block["height"].as()); } } else if (doc["mempool-blocks"].is()) { JsonArray blockInfo = doc["mempool-blocks"].as(); uint medianFee = (uint)round(blockInfo[0]["medianFee"].as()); processNewBlockFee(medianFee); } } void BlockNotify::setup() { IPAddress result; int dnsErr = -1; String mempoolInstance = preferences.getString("mempoolInstance", DEFAULT_MEMPOOL_INSTANCE); while (dnsErr != 1 && !strchr(mempoolInstance.c_str(), ':')) { dnsErr = WiFi.hostByName(mempoolInstance.c_str(), result); if (dnsErr != 1) { Serial.print(mempoolInstance); Serial.println(F("mempool DNS could not be resolved")); WiFi.reconnect(); vTaskDelay(pdMS_TO_TICKS(1000)); } } // Get current block height through regular API int blockFetch = fetchLatestBlock(); if (blockFetch > currentBlockHeight) currentBlockHeight = blockFetch; if (currentBlockHeight != -1) { lastBlockUpdate = esp_timer_get_time() / 1000000; } if (workQueue != nullptr) { WorkItem blockUpdate = {TASK_BLOCK_UPDATE, 0}; xQueueSend(workQueue, &blockUpdate, portMAX_DELAY); } const bool useSSL = preferences.getBool("mempoolSecure", DEFAULT_MEMPOOL_SECURE); const String protocol = useSSL ? "wss" : "ws"; String wsUri = protocol + "://" + mempoolInstance + "/api/v1/ws"; esp_websocket_client_config_t config = { .task_stack = (6*1024), .user_agent = USER_AGENT }; if (useSSL) { config.cert_pem = mempoolWsCert; } config.uri = wsUri.c_str(); Serial.printf("Connecting to %s\r\n", mempoolInstance.c_str()); wsClient = esp_websocket_client_init(&config); esp_websocket_register_events(wsClient, WEBSOCKET_EVENT_ANY, onWebsocketEvent, wsClient); esp_websocket_client_start(wsClient); } void BlockNotify::processNewBlock(uint32_t newBlockHeight) { if (newBlockHeight <= currentBlockHeight) { return; } currentBlockHeight = newBlockHeight; lastBlockUpdate = esp_timer_get_time() / 1000000; if (workQueue != nullptr) { WorkItem blockUpdate = {TASK_BLOCK_UPDATE, 0}; xQueueSend(workQueue, &blockUpdate, portMAX_DELAY); } if (ScreenHandler::getCurrentScreen() != SCREEN_BLOCK_HEIGHT && preferences.getBool("stealFocus", DEFAULT_STEAL_FOCUS)) { uint64_t timerPeriod = 0; if (isTimerActive()) { timerPeriod = getTimerSeconds(); esp_timer_stop(screenRotateTimer); } ScreenHandler::setCurrentScreen(SCREEN_BLOCK_HEIGHT); if (timerPeriod > 0) { esp_timer_start_periodic(screenRotateTimer, timerPeriod * usPerSecond); } vTaskDelay(pdMS_TO_TICKS(315*NUM_SCREENS)); // Extra delay because of screen switching } if (preferences.getBool("ledFlashOnUpd", DEFAULT_LED_FLASH_ON_UPD)) { vTaskDelay(pdMS_TO_TICKS(250)); // Wait until screens are updated getLedHandler().queueEffect(LED_FLASH_BLOCK_NOTIFY); } } void BlockNotify::processNewBlockFee(uint16_t newBlockFee) { if (blockMedianFee == newBlockFee) { return; } blockMedianFee = newBlockFee; if (workQueue != nullptr) { WorkItem blockUpdate = {TASK_FEE_UPDATE, 0}; xQueueSend(workQueue, &blockUpdate, portMAX_DELAY); } } uint32_t BlockNotify::getBlockHeight() const { return currentBlockHeight; } void BlockNotify::setBlockHeight(uint32_t newBlockHeight) { currentBlockHeight = newBlockHeight; } uint16_t BlockNotify::getBlockMedianFee() const { return blockMedianFee; } void BlockNotify::setBlockMedianFee(uint16_t newBlockMedianFee) { blockMedianFee = newBlockMedianFee; } bool BlockNotify::isConnected() const { if (wsClient == NULL) return false; return esp_websocket_client_is_connected(wsClient); } bool BlockNotify::isInitialized() const { return notifyInit; } void BlockNotify::stop() { if (wsClient == NULL) return; esp_websocket_client_close(wsClient, portMAX_DELAY); esp_websocket_client_stop(wsClient); esp_websocket_client_destroy(wsClient); wsClient = NULL; } void BlockNotify::restart() { stop(); setup(); } int BlockNotify::fetchLatestBlock() { try { String mempoolInstance = preferences.getString("mempoolInstance", DEFAULT_MEMPOOL_INSTANCE); const String protocol = preferences.getBool("mempoolSecure", DEFAULT_MEMPOOL_SECURE) ? "https" : "http"; String url = protocol + "://" + mempoolInstance + "/api/blocks/tip/height"; HTTPClient* http = HttpHelper::begin(url); Serial.println("Fetching block height from " + url); int httpCode = http->GET(); if (httpCode > 0 && httpCode == HTTP_CODE_OK) { String blockHeightStr = http->getString(); HttpHelper::end(http); return blockHeightStr.toInt(); } HttpHelper::end(http); Serial.println("HTTP code" + String(httpCode)); } catch (...) { Serial.println(F("An exception occurred while trying to get the latest block")); } return 2203; // B-T-C } uint BlockNotify::getLastBlockUpdate() const { return lastBlockUpdate; } void BlockNotify::setLastBlockUpdate(uint lastUpdate) { lastBlockUpdate = lastUpdate; }