Bad HTTP response

[ITstreet1]

Board

ESP32 C3

Device Description

Devkit

Hardware Configuration

Nothing

Version

latest stable Release (if not listed below)

IDE Name

Arduino IDE

Operating System

Win10

Flash frequency

80MHz

PSRAM enabled

no

Upload speed

921600

Description

I tried to use my older code but always get a bad HTTP response. Can someone point me what to change?
The URL is ok, as I get the valid data over the browser with HTTP code 200.

Sketch

#include <WiFi.h>
#include <HTTPClient.h>
WiFiClient client;

const char* ssid = "SSID";
const char* password = "PASS";
const int deviceID = 2;
String server = "www.somesite.com";

void setup(){
  Serial.begin(9600);
  Serial.println();
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while((WiFi.status() != WL_CONNECTED)) { 
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("Connected!");

}
void loop(){
  Serial.println("test");
  if(WiFi.status()== WL_CONNECTED){
      HTTPClient http;
      String serverPath = server;
      Serial.println(serverPath);
      Serial.println("-----");
      http.begin(client, serverPath.c_str());
      int httpResponseCode = http.GET();
      if(httpResponseCode>0){
        Serial.print("HTTP Response code: ");
        Serial.println(httpResponseCode);
      }else{
        Serial.print("Error code: ");
        Serial.println(httpResponseCode);
      }
      http.end();
    }else{
      Serial.println("WiFi Disconnected");
    }
  delay(5000);
}

Debug Message

I always get -1 as HTTP code. Verbose output this:

[  6031][V][HTTPClient.cpp:259] beginInternal(): url: www.somesite.com
[  6315][D][HTTPClient.cpp:314] beginInternal(): protocol: http, host: www.somesite.com port: 80 url: ....//link is not important
[  6505][D][HTTPClient.cpp:621] sendRequest(): request type: 'GET' redirCount: 0

[  6593][D][NetworkManager.cpp:83] hostByName(): Clearing DNS cache
[  6670][D][NetworkManager.cpp:127] hostByName(): DNS found IPv4 *****
[  6776][E][NetworkClient.cpp:293] connect(): Setsockopt 'SO_SNDTIMEO'' on fd 48 failed. errno: 22, "Invalid argument"
[  6901][D][HTTPClient.cpp:1248] connect(): failed connect to www.somesite.com:80
[  6983][W][HTTPClient.cpp:1604] returnError(): error(-1): connection refused
Error code: -1
[  7066][D][HTTPClient.cpp:434] disconnect(): tcp is closed

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[ITstreet1]

HTTPClient.h line 47 clearly says #define HTTPC_ERROR_CONNECTION_REFUSED (-1), which is what I get on the output, but why? What is changed in v3.x.x? What should be changed in begin to work properly?

From what I have seen, it all started from V3.x.x. There are a bunch of similar problems on the internet.

[lbernstone]

I'd recommend you use curl -v <url> or your browser's network tools to see what the transaction looks like when it completes. There is likely a redirect there to https or perhaps http 2.0. You could also check the verbose log of an earlier version of arduino-esp32 to see what the server response looks like.

[ITstreet1]

When I use the very same URL address in a browser, I get what I expect, and get 200 response code.

When I use this same URL here, I get -1

I tired your suggestion on my PC and get this:

• Host site.com:80 was resolved.
• IPv6: (none)
• IPv4: *****
• Trying *****:80...
• Connected to site.com(*****) port 80

GET /index.php?try=in HTTP/1.1
Host: site.com
User-Agent: curl/8.9.1
Accept: /

• Request completely sent off
  < HTTP/1.1 406 Not Acceptable
  < Date: Mon, 19 May 2025 08:14:01 GMT
  < Server: Apache/2.0.64 (Unix)
  < Content-Length: 404
  < Content-Type: text/html; charset=iso-8859-1
  <

<title>406 Not Acceptable</title>

Not Acceptable

An appropriate representation of the requested resource /index.php could not be found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

* Connection #0 to host site.com left intact 'deviceID' is not recognized as an internal or external command, operable program or batch file. 'rlyStatOff1' is not recognized as an internal or external command, operable program or batch file. 'rlyStatOff2' is not recognized as an internal or external command, operable program or batch file.

I downgraded ESP32 board definitions to 2.0.16 and get:

[ 3258][V][HTTPClient.cpp:259] beginInternal(): url: http://site.com/index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[ 3552][D][HTTPClient.cpp:314] beginInternal(): protocol: http, host: site.com port: 80 url: /index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[ 3742][D][HTTPClient.cpp:621] sendRequest(): request type: 'GET' redirCount: 0

[ 3852][E][WiFiClient.cpp:282] connect(): Setsockopt 'SO_SNDTIMEO'' on fd 48 failed. errno: 22, "Invalid argument"
[ 3974][D][HTTPClient.cpp:1248] connect(): failed connect to site.com:80
[ 4057][W][HTTPClient.cpp:1604] returnError(): error(-1): connection refused
Error code: -1
[ 4139][D][HTTPClient.cpp:434] disconnect(): tcp is closed

This same code works on ESP8266. Different libs, though.

[ITstreet1]

I tried 2.0.2 and it works on ESP32.
The versions I mentioned above didn't worked even on a barebone ESP32. But this 2.0.2 don't have support for C3...

So, it is not the problem with the server, it is with the libraries. I am not sure what I wrote wrong in the code, but obviously it need to be changed to adopt the newer packages of support for the ESP32 series.

[me-no-dev]

I have one suggestion. Comment out return 0; here: https://github.com/espressif/arduino-esp32/blob/master/libraries/Network/src/NetworkClient.cpp#L290 and try again. Please also post the verbose logs

[ITstreet1]

The newest ESP32 packet version from the Arduino IDE.
When I comment out the line you suggested, it couldn't compile.

[me-no-dev]

Since it's part of #define, you can just delete the whole line and that should do it

[ITstreet1]

This did the trick.
Works fine on ESP32 and ESP32 C3.

Will this be fixed in upcoming releases?

[me-no-dev]

@ITstreet1 please post the verbose debug log from serial with that change

[me-no-dev]

@ITstreet1 please also provide an actual example to reproduce the issue, because with the code above everything works as expected

[ITstreet1]

Hello,
The verbose for ESP32 C3 outputs all of this:

[ 4841][V][HTTPClient.cpp:259] beginInternal(): url: http://site.com/index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[ 5125][D][HTTPClient.cpp:314] beginInternal(): protocol: http, host: site.com port: 80 url: /index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[ 5315][D][HTTPClient.cpp:621] sendRequest(): request type: 'GET' redirCount: 0

[ 5403][D][NetworkManager.cpp:83] hostByName(): Clearing DNS cache
[ 5484][D][NetworkManager.cpp:127] hostByName(): DNS found IPv4 **********
[ 5587][E][NetworkClient.cpp:292] connect(): Setsockopt 'SO_SNDTIMEO'' on fd 48 failed. errno: 22, "Invalid argument"
[ 5712][E][NetworkClient.cpp:293] connect(): Setsockopt 'SO_RCVTIMEO'' on fd 48 failed. errno: 22, "Invalid argument"
[ 5837][D][HTTPClient.cpp:1255] connect(): connected to site.com:80
[ 5916][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6309][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6410][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6512][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6613][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6714][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6816][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 6917][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7018][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7119][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7221][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7322][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7423][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7524][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7626][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7727][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7828][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 7929][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8031][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'HTTP/1.1 200 OK'
[ 8114][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8216][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8317][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8418][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8519][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8620][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8722][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8823][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 8924][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9025][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9127][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9228][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9329][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9430][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9532][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9633][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9734][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9836][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 9937][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10038][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10139][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10240][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10342][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10443][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10544][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10645][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10747][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10848][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 10949][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11050][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11152][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11253][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11354][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11456][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11557][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11658][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11759][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 11861][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Date: Tue, 20 May 2025 10:39:50 GMT'
[ 11965][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12066][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12168][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12269][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12370][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12471][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12573][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12674][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12775][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12876][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 12978][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13079][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13180][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13281][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13383][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13484][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13585][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13686][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13788][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13889][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 13990][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14091][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14193][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14294][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14395][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14496][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14597][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14699][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14800][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 14901][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15002][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Server: Apache/2.0.64 (Unix)'
[ 15100][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15201][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15302][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15404][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15505][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15606][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15707][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15808][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 15910][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16011][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16112][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16213][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16315][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16416][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16517][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16618][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16720][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16821][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 16922][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17023][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Content-Length: 0'
[ 17109][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17210][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17312][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17413][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17514][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17615][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17717][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17818][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 17919][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18020][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18122][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18223][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18324][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18425][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18527][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18628][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18729][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18830][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 18932][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19033][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19134][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19235][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19337][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19438][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19539][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19640][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19742][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19843][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 19944][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20045][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20147][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20248][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20349][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Keep-Alive: timeout=5, max=100'
[ 20448][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20550][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20651][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20752][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20853][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 20954][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21056][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21157][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21258][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21359][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21461][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21562][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21663][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21765][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21866][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 21967][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22068][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22170][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22271][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22372][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22473][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22574][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22676][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22777][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 22878][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Connection: Keep-Alive'
[ 22969][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23070][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23172][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23273][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23374][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23475][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23577][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23678][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23779][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23880][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 23982][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24083][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24184][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24285][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24387][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24488][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24589][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24690][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24792][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24893][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 24994][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25095][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25197][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25298][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25399][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25500][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: 'Content-Type: text/html'
[ 25592][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25694][E][NetworkClient.cpp:326] setSocketOption(): fail on 48, errno: 22, "Invalid argument"
[ 25795][V][HTTPClient.cpp:1357] handleHeaderResponse(): RX: ''
[ 25863][D][HTTPClient.cpp:1410] handleHeaderResponse(): code: 200
[ 25934][D][HTTPClient.cpp:650] sendRequest(): sendRequest code=200

HTTP Response code: 200
[ 26008][D][NetworkClient.cpp:575] connected(): Disconnected: RES: 0, ERR: 128
[ 26117][D][HTTPClient.cpp:434] disconnect(): tcp is closed

But it passed.

The code is what I have posted above, believe it or not.
Here is it again in case I added a thing.

#include <WiFi.h>
#include <HTTPClient.h>
WiFiClient client;

const char* ssid = "SSID";
const char* password = "PASS";
const int deviceID = 2;
String server = "http://site.com/index.php";
String payload;

int rlyStatOff1 = 0;
int rlyStatOff2 = 0;

void setup(){
  Serial.begin(9600);
  Serial.println();
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while((WiFi.status() != WL_CONNECTED)) { 
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("Connected!");
}
void loop(){
  Serial.println("test");
  if(WiFi.status()== WL_CONNECTED){
      HTTPClient http;
      String serverPath = server+"?try=in&deviceID="+deviceID+"&rlyStatOff1="+rlyStatOff1+"&rlyStatOff2="+rlyStatOff2;
      Serial.println(serverPath);
      Serial.println("-----");
      http.begin(client, serverPath.c_str());
      int httpResponseCode = http.GET();
      if(httpResponseCode>0){
        Serial.print("HTTP Response code: ");
        Serial.println(httpResponseCode);
      }else{
        Serial.print("Error code: ");
        Serial.println(httpResponseCode);
      }
      http.end();
    }else{
      Serial.println("WiFi Disconnected");
    }
  delay(5000);
}

[ITstreet1]

And I must repeat myself. This code worked with zero issues on older versions of ESP32 support packages. This code works with ESP8266, too. With ESP8266 libs and support, though.

[me-no-dev]

You do not need to repeat yourself... see my output of your code below

test
http://site.com/index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
-----
[  3980][V][HTTPClient.cpp:242] beginInternal(): url: http://site.com/index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[  3998][D][HTTPClient.cpp:293] beginInternal(): protocol: http, host: site.com port: 80 url: /index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0
[  4011][D][HTTPClient.cpp:574] sendRequest(): request type: 'GET' redirCount: 0

[  4018][D][NetworkManager.cpp:83] hostByName(): Clearing DNS cache
[  4052][D][NetworkManager.cpp:127] hostByName(): DNS found IPv4 34.211.108.46
[  4370][D][HTTPClient.cpp:1112] connect():  connected to site.com:80
[  4679][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'HTTP/1.1 301 Moved Permanently'
[  4687][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Date: Tue, 20 May 2025 11:17:50 GMT'
[  4696][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Transfer-Encoding: chunked'
[  4705][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Connection: keep-alive'
[  4713][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Cache-Control: no-cache,must-revalidate,max-age=0,no-store,private'
[  4724][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'X-Content-Type-Options: nosniff'
[  4733][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Expires: Thu, 01 Jan 1970 00:00:00 GMT'
[  4742][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Set-Cookie: CookieConsentPolicy=1:1; path=/; expires=Wed, 20-May-2026 11:17:50 GMT; Max-Age=31536000; secure'
[  4758][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Set-Cookie: LSKey-c$CookieConsentPolicy=1:1; path=/; expires=Wed, 20-May-2026 11:17:50 GMT; Max-Age=31536000; secure'
[  4774][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Location: https://site.com/index.php?try=in&deviceID=2&rlyStatOff1=0&rlyStatOff2=0'
[  4787][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Content-Security-Policy: upgrade-insecure-requests'
[  4798][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'Server: sfdcedge'
[  4805][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'X-SFDC-Request-Id: 6f709a681f53407729018a246267c8b0'
[  4815][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: 'X-Request-Id: 6f709a681f53407729018a246267c8b0'
[  4825][V][HTTPClient.cpp:1201] handleHeaderResponse(): RX: ''
[  4831][D][HTTPClient.cpp:1257] handleHeaderResponse(): code: 301
[  4837][D][HTTPClient.cpp:1264] handleHeaderResponse(): Transfer-Encoding: chunked
[  4845][D][HTTPClient.cpp:618] sendRequest(): sendRequest code=301

HTTP Response code: 301
[  4851][D][HTTPClient.cpp:373] disconnect(): still data in buffer (5), clean up.

[  4860][D][HTTPClient.cpp:378] disconnect(): tcp keep open for reuse

It's not the same as yours (and I did not make the edit that I asked you to do) so what gives?

[ITstreet1]

Mate, with the exact code with site.com, I get -1 as HTTP response.
With the erased line you suggested, I get 200, but there are other problems. It looks like http.getString(); returns nothing. I will try on other PC, just to see if there is some lib conflict here. I have no idea what is the problem.
But the older package versions work. So it makes me a bit confused.