Making a PUT request using HTTPClient is very slow

[brahmajit]

I'm trying to upload a 40 MB csv file to a cloud server, using HTTP PUT request. But it's taking 15-20 mins. I've tried making the PUT request using cURL and same file from terminal and it happens under 3 minis. How can I improve the speed/solve the issue.

Example Code:

Code: Select all

void send_file() {
  if ((wifiMulti.run() == WL_CONNECTED)) {
    File file = SD.open("/file0.csv");
    if (!file) {
      Serial.println("Failed to open file");
      return;
    }
    const auto filesize = file.size();

    HTTPClient http;
    http.addHeader("Content-Type", "text/csv");
    http.addHeader("Content-Length", String(filesize, DEC));
    http.setAuthorization(username, password);
    char finalurl[256];
    sprintf(finalurl, "%s/%s", apiUrl, file.name());
    //  Serial.println(finalurl);
    http.addHeader("Content-Type", "text/csv");
    http.addHeader("Content-Length", String(filesize, DEC));
    http.setAuthorization(username, password);
    http.begin(finalurl);
    int http_code;
    const auto A = millis();
    http_code = http.sendRequest("PUT", &file, filesize);
    Serial.printf("\n time-keep: %lus", (millis() - A) / 1000);
    http.end();
    file.close();
  }
}