DIY, Wireless, Raspberry Pi, Nodemcu, Networking.
"application/json"); int httpCode = http.POST(postData); // httpCode will be negative on error if (httpCode > 0) { // HTTP header has been send and Server response header has been handled Serial.printf("[HTTP] POST... code: %d\n", httpCode); // file found at server if (httpCode == HTTP_CODE_OK) {