#include "WiFi.h"
#include "WiFiClient.h"
#include "WebServer.h"
#include "ESPmDNS.h"
#include "Update.h"
const char* host = "esp32";
const char* ssid = "****";
const char* password = "*****";
WebServer server(80);
/*
* Login page
*/
const char* loginIndex =
"<form name='loginForm'>"
"<table width='20%' bgcolor='A09F9F' align='center'>"
"<tr>"
"<td colspan=2>"
"<center><font size=4><b>ESP32 Login Page</b></font></center>"
"
"
"</td>"
"
"
"
"
"</tr>"
"<td>Username:</td>"
"<td><input type='text' size=25 name='userid'>
</td>"
"</tr>"
"
"
"
"
"<tr>"
"<td>Password:</td>"
"<td><input type='Password' size=25 name='pwd'>
</td>"
"
"
"
"
"</tr>"
"<tr>"
"<td><input type='submit' onclick='check(this.form)' value='Login'></td>"
"</tr>"
"</table>"
"</form>"
"<script>"
"function check(form)"
"{"
"if(form.userid.value=='admin' && form.pwd.value=='admin')"
"{"
"window.open('/serverIndex')"
"}"
"else"
"{"
" alert('Error Password or Username')/*displays error message*/"
"}"
"}"
"</script>";
/*
* Server Index Page
*/
const char* serverIndex =
"<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>"
"<form method='POST' action='#' enctype='multipart/form-data' id='upload_form'>"
"<input type='file' name='update'>"
"<input type='submit' value='Update'>"
"</form>"
"<div id='prg'>progress: 0%</div>"
"<script>"
"$('form').submit(function(e){"
"e.preventDefault();"
"var form = $('#upload_form')[0];"
"var data = new FormData(form);"
" $.ajax({"
"url: '/update',"
"type: 'POST',"
"data: data,"
"contentType: false,"
"processData:false,"
"xhr: function() {"
"var xhr = new window.XMLHttpRequest();"
"xhr.upload.addEventListener('progress', function(evt) {"
"if (evt.lengthComputable) {"
"var per = evt.loaded / evt.total;"
"$('#prg').html('progress: ' + Math.round(per*100) + '%');"
"}"
"}, false);"
"return xhr;"
"},"
"success:function(d, s) {"
"console.log('success!')"
"},"
"error: function (a, b, c) {"
"}"
"});"
"});"
"</script>";
/*
* setup function
*/
void setup(void) {
Serial.begin(115200);
// Connect to WiFi network
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
/*use mdns for host name resolution*/
if (!MDNS.begin(host)) { //http://esp32.local
Serial.println("Error setting up MDNS responder!");
while (1) {
delay(1000);
}
}
Serial.println("mDNS responder started");
/*return index page which is stored in serverIndex */
server.on("/", HTTP_GET, []() {
server.sendHeader("Connection", "close");
server.send(200, "text/html", loginIndex);
});
server.on("/serverIndex", HTTP_GET, []() {
server.sendHeader("Connection", "close");
server.send(200, "text/html", serverIndex);
});
/*handling uploading firmware file */
server.on("/update", HTTP_POST, []() {
server.sendHeader("Connection", "close");
server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
ESP.restart();
}, []() {
HTTPUpload& upload = server.upload();
if (upload.status == UPLOAD_FILE_START) {
Serial.printf("Update: %s\n", upload.filename.c_str());
if (!Update.begin(UPDATE_SIZE_UNKNOWN)) { //start with max available size
Update.printError(Serial);
}
} else if (upload.status == UPLOAD_FILE_WRITE) {
/* flashing firmware to ESP*/
if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
Update.printError(Serial);
}
} else if (upload.status == UPLOAD_FILE_END) {
if (Update.end(true)) { //true to set the size to the current progress
Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
} else {
Update.printError(Serial);
}
}
});
server.begin();
}
void loop(void) {
server.handleClient();
delay(1);
}
Hi guys, I'm having trouble to rectify this error. I've open the webserver.h file and can't find any solution there.
If anyone of facing this error before and has solved it, please share.
This is the error:
In file included from /Users/AhmadHafiz/Desktop/OTAWebUpdater1/OTAWebUpdater1.ino:9:0:
/Users/AhmadHafiz/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/libraries/WebServer/src/WebServer.h:170:15: error: cannot declare field 'WebServer::_server' to be of abstract type 'WiFiServer'
WiFiServer _server;
^
In file included from /Users/AhmadHafiz/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/libraries/WiFi/src/WiFi.h:38:0,
from /Users/AhmadHafiz/Desktop/OTAWebUpdater1/OTAWebUpdater1.ino:7:
/Users/AhmadHafiz/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/libraries/WiFi/src/WiFiServer.h:26:7: note: because the following virtual functions are pure within 'WiFiServer':
class WiFiServer : public Server {
^
In file included from /Users/AhmadHafiz/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/Arduino.h:152:0,
from sketch/OTAWebUpdater1.ino.cpp:1:
/Users/AhmadHafiz/Library/Arduino15/packages/esp32/hardware/esp32/1.0.4/cores/esp32/Server.h:28:18: note: virtual void Server::begin()
virtual void begin() =0;
^
exit status 1
Error compiling for board M5Stack-Core-ESP32.