Hi folks.
I'm trying to do an update OTA using the ArduinoOTA library with this example but it always give me the error "Server didn't provide Content-length header. Can't continue with update.".
However If I make the request via postman, to my webserver, I can see that the content length is there. I also printed the get response to the serial console I also can see it there.
Response:
cache-control: max-age=0, private, must-revalidate
connection: close
content-length: 19332
cross-origin-window-policy: deny
date: Mon, 17 May 2021 21:49:13 GMT
server: Cowboy
x-content-type-options: nosniff
x-download-options: noopen
x-frame-options: SAMEORIGIN
x-permitted-cross-domain-policies: none
x-request-id: Fn_4_EDKq7h4hbQAAAEj
x-xss-protection: 1; mode=block
⸮ ⸮⸮⸮⸮Aa⸮L#x+a⸮K+⸮H⸮⸮##p⸮\ ⸮⸮K+⸮aHI⸮⸮aHh+⸮K+ИG⸮⸮F⸮` X JKx) ⸮Ix xAɲp⸮ I⸮⸮ax1ɲpx⸮)⸮x ) ⸮Ix@B⸮⸮px xAɲpxex⸮Bр"K⸮⸮apGx DA⸮⸮i⸮a⸮⸮h$⸮C`⸮i#B⸮⸮h#C`h⸮a⸮⸮⸮i#B⸮⸮⸮i⸮@B⸮⸮KC`⸮iZa⸮⸮⸮#⸮C`⸮⸮⸮i⸮a⸮⸮h"C`⸮@~⸮a⸮⸮⸮pG~#Qa⸮⸮B⸮Ba⸮B⸮⸮@B⸮B⸮⸮B⸮K"p⸮⸮⸮pG⸮Fy p⸮h⸮⸮!⸮2B&Ѐ ⸮⸮⸮r#Sp@!K⸮qPq^hM⸮ .@⸮C^`^i5@(CXaH`Ha]hH(@⸮%⸮(CX`Xh⸮⸮X`#Qq#q⸮z⸮⸮ ⸮⸮⸮ yp⸮⸮ ⸮⸮⸮⸮⸮ ⸮?⸮#qCqK`⸮`x"CppG⸮F⸮8⸮6K !⸮i
// it continues
This is the sketch I'm using:
#include <SPI.h>
#include <WiFiNINA.h>
#include <ArduinoHttpClient.h>
#include <ArduinoOTA.h>
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
int status = WL_IDLE_STATUS; // the Wifi radio's status
const short VERSION = 1;
WiFiClient wifi;
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// check for the WiFi module:
if (WiFi.status() == WL_NO_MODULE) {
Serial.println("Communication with WiFi module failed!");
// don't continue
while (true);
}
String fv = WiFi.firmwareVersion();
if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
Serial.println("Please upgrade the firmware");
}
// attempt to connect to Wifi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
// you're connected now, so print out the data:
Serial.print("You're connected to the network");
printCurrentNet();
printWifiData();
}
void loop() {
// check the network connection once every 10 seconds:
Serial.println("strating upload OTA!");
handleSketchDownload();
delay(5000);
printCurrentNet();
}
void printWifiData() {
// print your board's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
Serial.println(ip);
// print your MAC address:
byte mac[6];
WiFi.macAddress(mac);
Serial.print("MAC address: ");
printMacAddress(mac);
}
void printCurrentNet() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print the MAC address of the router you're attached to:
byte bssid[6];
WiFi.BSSID(bssid);
Serial.print("BSSID: ");
printMacAddress(bssid);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.println(rssi);
// print the encryption type:
byte encryption = WiFi.encryptionType();
Serial.print("Encryption Type:");
Serial.println(encryption, HEX);
Serial.println();
}
void printMacAddress(byte mac[]) {
for (int i = 5; i >= 0; i--) {
if (mac[i] < 16) {
Serial.print("0");
}
Serial.print(mac[i], HEX);
if (i > 0) {
Serial.print(":");
}
}
Serial.println();
}
void handleSketchDownload() {
const char* SERVER = "192.168.1.84"; // Set your correct hostname
const unsigned short SERVER_PORT = 4000; // Commonly 80 (HTTP) | 443 (HTTPS)
const char* PATH = "/files"; // Set the URI to the .bin firmware
const unsigned long CHECK_INTERVAL = 6000; // Time interval between update checks (ms)
// Time interval check
static unsigned long previousMillis;
unsigned long currentMillis = millis();
if (currentMillis - previousMillis < CHECK_INTERVAL)
return;
previousMillis = currentMillis;
// HttpClient client(wifiClient, SERVER, SERVER_PORT); // HTTP
HttpClient client(wifi, SERVER, SERVER_PORT); // HTTPS
char buff[32];
snprintf(buff, sizeof(buff), PATH, VERSION + 1);
Serial.print("Check for update file ");
Serial.println(buff);
// Make the GET request
client.get(buff);
int statusCode = client.responseStatusCode();
Serial.print("Update status code: ");
Serial.println(statusCode);
if (statusCode != 200) {
client.stop();
return;
}
long length = client.contentLength();
if (length == HttpClient::kNoContentLengthHeader) {
client.stop();
Serial.println("Server didn't provide Content-length header. Can't continue with update.");
return;
}
Serial.print("Server returned update file of size ");
Serial.print(length);
Serial.println(" bytes");
if (!InternalStorage.open(length)) {
client.stop();
Serial.println("There is not enough space to store the update. Can't continue with update.");
return;
}
byte b;
while (length > 0) {
if (!client.readBytes(&b, 1)) // reading a byte with timeout
break;
InternalStorage.write(b);
length--;
}
InternalStorage.close();
client.stop();
if (length > 0) {
Serial.print("Timeout downloading update file at ");
Serial.print(length);
Serial.println(" bytes. Can't continue with update.");
return;
}
Serial.println("Sketch update apply and reset.");
Serial.flush();
InternalStorage.apply(); // this doesn't return
}
Any pointers on how to solve this?
Note: I tried other endpoints and the result was the same
Thanks
