Comments (5)
mruettgers
commented on June 22, 2024
Hi,
First of all, thank you for your great work on this library.
I'm encountering the same issue here with v1.7.0. It looks like the web server is returning garbage after some valid bytes (see screenshot attached).
The garbage occurrs after:
<!DOCTYPE html><html lang="en"><head><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/><title>Config ESP</title><script>function c(l){document.getElementById('s').value=l.innerText||l.textContent;document.getElementById('p').focus();document.getElementById('s1').value=l.innerText||l.textContent;document.getElementById('p1').focus();}</script><script>(function(e){var t=function(){"use strict";var e="s",n=function(e){var t=-e.getTimezoneOffset();return t!==null?t:0},r=function(e,t,n){var r=new Date;return e!==undefined&&r.setFullYear(e),r.setDate(n),r.setMonth(t),r},i=function(e){return n(r(e,0,2))},s=function(e){return n(r(e,5,2))},o=function(e){var t=e.getMonth()>7?s(e.getFullYear()):i(e.getFullYear()),r=n(e);return t-r!==0},u=function(){var t=i(),n=s(),r=i()-s();return r<0?t+",1":r>0?n+",1,"+e:t+",0"},a=function(){var e=u();return ne
Thanks,
Michael
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mruettgers
commented on June 22, 2024
Hm. It looks like the issue is caused by passing the page variable of type String by value.
Replacing
AsyncWebServerResponse *response = request->beginResponse(200, WM_HTTP_HEAD_CT, page);
with
AsyncWebServerResponse *response = request->beginResponse_P(200, WM_HTTP_HEAD_CT, page.c_str());
in
void ESPAsync_WiFiManager::handleWifi(AsyncWebServerRequest *request)
solves the issue for me.
And because there's no need to do memory operations for building the response, we should always use beginResponse_P and pass the char pointer to avoid string duplication in memory and an oom error.
Unfortunately I don't have the time for a pull request right now, maybe within the next days.
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khoih-prog
commented on June 22, 2024
Thanks for using the library.
I've retried many times, using WeMos D1 Mini as well as WeMos D1, ESP3288, etc. but everything is OK.
Starting Async_ConfigOnDoubleReset using LittleFS on ESP8266_WEMOS_D1MINI
ESPAsync_WiFiManager v1.7.1
ESP_DoubleResetDetector v1.1.1
ESP Self-Stored: SSID = HueNet, Pass = password
[WM] * Add SSID = HueNet , PW = password
Got ESP Self-Stored Credentials. Timeout 120s for Config Portal
LittleFS Flag read = 0xD0D01234
doubleResetDetected
Saving config file...
Saving config file OK
Open Config Portal without Timeout: Double Reset Detected
Starting configuration portal @ 192.168.4.1, SSID = ESP_AB1481, PWD = MyESP_AB1481
[WM] Connecting to new AP
WiFi connected...yeey :)
[WM] * Add SSID = HueNet1 , PW = password
[WM] * Add SSID = HueNet2 , PW = password
[WM] SaveWiFiCfgFile
[WM] stationIP = 192.168.2.186 , gatewayIP = 192.168.2.1
[WM] netMask = 255.255.255.0
[WM] dns1IP = 192.168.2.1 , dns2IP = 8.8.8.8
[WM] OK
After waiting 0.00 secs more in setup(), connection result is connected. Local IP: 192.168.2.186
HHH
I think there is something wrong either with your board, your code or your development platform (Visual Code Studio). I suggest you to eliminate the issue one-by-one, by using the standard Arduino IDE v1.8.13 on another ESP8266 board.
You have to know ESP32 is more powerful with larger resource than ESP8266. Therefore code, running on ESP32, can't always run on ESP8266.
I have to close the issue until you prove there is some bug in the library.
Good Luck,
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glen361
commented on June 22, 2024
Ok thank you for your prompt response. I’ll give that a try.
Glen
On Apr 29, 2021, at 3:48 PM, Khoi Hoang ***@***.***> wrote:
Closed #50.
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khoih-prog
commented on June 22, 2024
I don't think that is the issue. If you have a look at the ESPAsyncWebServer library #L246-L254
AsyncWebServerResponse *beginResponse(int code, const String& contentType=String(), const String& content=String());
...
AsyncWebServerResponse *beginResponse_P(int code, const String& contentType, PGM_P content, AwsTemplateProcessor callback=nullptr);
The following function call is correct, and String is passed by reference, not by value (with duplication) as you think.
AsyncWebServerResponse *response = request->beginResponse(200, WM_HTTP_HEAD_CT, page);
The following call to use beginResponse_P is wrong, unless your page is PGM_P type (in PROGMEM)
AsyncWebServerResponse *response = request->beginResponse_P(200, WM_HTTP_HEAD_CT, page.c_str());
I suggest you to check your code as well as your usage of your String for heap / stack corruption issue.
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