Hi!
I want to write a file upload handler class.
My current class is
class UpdateMasterRequestHandler : public AsyncWebHandler {
public:
UpdateMasterRequestHandler(/* args */) { }
virtual ~UpdateMasterRequestHandler() { }
bool canHandle(AsyncWebServerRequest *request);
void handleUpload(AsyncWebServerRequest *request, const String& filename, size_t index, uint8_t *data, size_t len, bool final);
};canHandle returns true, but handleUpload never gets called.
What am I doing wrong?
bool UpdateMasterRequestHandler::canHandle(AsyncWebServerRequest *request) {
bool forMe = request->url() == "/api/UpdateMaster"
&& request->method() == HTTP_POST
&& request->multipart();
if (forMe) logDebugln("UpdateMasterRequestHandler!");
return forMe;
}
void UpdateMasterRequestHandler::handleUpload(AsyncWebServerRequest *request, const String& filename, size_t index, uint8_t *data, size_t len, bool final) {
if (index == 0) {
logDebug("UploadStart: ");
logDebugln(filename);
request->_tempFile = SPIFFS.open("master.hex", "w");
}
if (len > 0) {
request->_tempFile.write(data, len);
}
if (final) {
logDebug("UploadEnd: ");
logDebugln(filename);
request->_tempFile.close();
request->send(200, MIME_TYPE_PLAIN_TEXT, "Upload complete!");
}
}<form id="masterUpdateForm" action="/api/UpdateMaster" method="POST" enctype="multipart/form-data">
Firmware: <input type="file" name="file" accept="*.hex">
<button type="submit">Update</button>
</form>class UpdateMasterRequestHandler : public AsyncWebHandler {
public:
UpdateMasterRequestHandler(/* args */) { }
virtual ~UpdateMasterRequestHandler() { }
virtual bool canHandle(AsyncWebServerRequest *request) override final;
virtual void handleRequest(AsyncWebServerRequest *request) override final;
virtual void handleUpload(AsyncWebServerRequest *request, const String& filename, size_t index, uint8_t *data, size_t len, bool final) override final;
};
Backtrace: 0x4000c3f0:0x3ffd1380 0x400db076:0x3ffd13a0 0x400db192:0x3ffd13c0 0x400d7ad1:0x3ffd13e0 0x400d6192:0x3ffd1450 0x400d60f5:0x3ffd1490 0x400d145d:0x3ffd14b0 0x4015188f:0x3ffd14f0 0x400d9309:0x3ffd1510 0x400d6df1:0x3ffd1560 0x400d6eb5:0x3ffd15a0 0x400d7105:0x3ffd15f0 0x4014b7b1:0x3ffd1610 0x4014b82d:0x3ffd1650 0x4014bed6:0x3ffd1670 0x4008a286:0x3ffd16a0
#0 0x4000c3f0:0x3ffd1380 in ?? ??:0
#1 0x400db076:0x3ffd13a0 in String::move(String&) at C:\Users\OnurNP.platformio\packages\framework-arduinoespressif32\cores\esp32/WString.cpp:857
#2 0x400db192:0x3ffd13c0 in String::operator=(String&&) at C:\Users\OnurNP.platformio\packages\framework-arduinoespressif32\cores\esp32/WString.cpp:857
#3 0x400d7ad1:0x3ffd13e0 in AsyncBasicResponse::_respond(AsyncWebServerRequest) at lib\ESPAsyncWebServer\src/WebResponses.cpp:699
#4 0x400d6192:0x3ffd1450 in AsyncWebServerRequest::send(AsyncWebServerResponse) at lib\ESPAsyncWebServer\src/WebRequest.cpp:797
#5 0x400d60f5:0x3ffd1490 in AsyncWebServerRequest::send(int, String const&, String const&) at lib\ESPAsyncWebServer\src/WebRequest.cpp:797
#6 0x400d145d:0x3ffd14b0 in handleRoot(AsyncWebServerRequest) at src/main.cpp:289
#7 0x4015188f:0x3ffd14f0 in std::_Function_handler<void (AsyncWebServerRequest), void ()(AsyncWebServerRequest)>::_M_invoke(std::_Any_data const&,
AsyncWebServerRequest*&&) at c:\users\onurnp.platformio\packages\toolchain-xtensa32@2.50200.97\xtensa-esp32-elf\include\c++\5.2.0/functional:1871
#8 0x400d9309:0x3ffd1510 in std::function<void (AsyncWebServerRequest*)>::operator()(AsyncWebServerRequest*) const at lib\ESPAsyncWebServer\src/StringArray.h:73
(inlined by) AsyncCallbackWebHandler::handleRequest(AsyncWebServerRequest*) at lib\ESPAsyncWebServer\src/WebHandlerImpl.h:132 #9 0x400d6df1:0x3ffd1560 in AsyncWebServerRequest::_parseLine() at lib\ESPAsyncWebServer\src/WebRequest.cpp:797
#10 0x400d6eb5:0x3ffd15a0 in AsyncWebServerRequest::_onData(void, unsigned int) at lib\ESPAsyncWebServer\src/WebRequest.cpp:797
#11 0x400d7105:0x3ffd15f0 in std::_Function_handler<void (void, AsyncClient, void, unsigned int), AsyncWebServerRequest::AsyncWebServerRequest(AsyncWebServer, AsyncClient)::{lambda(void, AsyncClient, void, unsigned int)#8}>::_M_invoke(std::_Any_data const&, void&&, AsyncClient*&&, std::_Any_data const&, unsigned int&&) at lib\ESPAsyncWebServer\src/WebRequest.cpp:797
(inlined by) _M_invoke at c:\users\onurnp\.platformio\packages\toolchain-xtensa32@2.50200.97\xtensa-esp32-elf\include\c++\5.2.0/functional:1871 #12 0x4014b7b1:0x3ffd1610 in std::function<void (void*, AsyncClient*, void*, unsigned int)>::operator()(void, AsyncClient, void*, unsigned int) const at lib\AsyncTCP\src/AsyncTCP.cpp:1039
(inlined by) AsyncClient::_recv(tcp_pcb*, pbuf*, signed char) at lib\AsyncTCP\src/AsyncTCP.cpp:934 #13 0x4014b82d:0x3ffd1650 in AsyncClient::_s_recv(void, tcp_pcb, pbuf, signed char) at lib\AsyncTCP\src/AsyncTCP.cpp:1039
#14 0x4014bed6:0x3ffd1670 in _async_service_task(void) at lib\AsyncTCP\src/AsyncTCP.cpp:1039
(inlined by) _async_service_task at lib\AsyncTCP\src/AsyncTCP.cpp:197#15 0x4008a286:0x3ffd16a0 in vPortTaskWrapper at
/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)
Using AsyncWebServer on ESP32 I'm getting frequent Guru Meditation Errors:
Core 1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC : 0x400d7e7c PS : 0x00060430 A0 : 0x800d7f1a A1 : 0x3ffb1f00
A2 : 0x3ffd31bc A3 : 0x3ffd2f84 A4 : 0x00000026 A5 : 0x3ffd2caa
A6 : 0x00000a0d A7 : 0x3a617461 A8 : 0x800d7e88 A9 : 0x3ffb1ee0
A10 : 0xe0088080 A11 : 0x00000026 A12 : 0x00000026 A13 : 0x00000026
A14 : 0x00000000 A15 : 0x00000000 SAR : 0x0000000a EXCCAUSE: 0x0000001c
EXCVADDR: 0xe0088088 LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0xffffffff
ELF file SHA256: 0000000000000000
Backtrace: 0x400d7e7c:0x3ffb1f00 0x400d7f17:0x3ffb1f20 0x400d7f37:0x3ffb1f40 0x400d7f8d:0x3ffb1f60 0x400d17d3:0x3ffb1f90 0x400df329:0x3ffb1fb0 0x40089afa:0x3ffb1fd0
the backtrace shows
Decoding 7 results
0x400d7e7c: AsyncEventSourceClient::_runQueue() at c:\arduinoideportable\portable\packages\esp32\tools\xtensa-esp32-elf-gcc\1.22.0-97-gc752ad5-5.2.0\xtensa-esp32-elf\include\c++\5.2.0/functional line 1858
0x400d7f17: AsyncEventSourceClient::_queueMessage(AsyncEventSourceMessage) at c:\arduinoideportable\portable\packages\esp32\tools\xtensa-esp32-elf-gcc\1.22.0-97-gc752ad5-5.2.0\xtensa-esp32-elf\include\c++\5.2.0/functional line 1858
0x400d7f37: AsyncEventSourceClient::write(char const, unsigned int) at c:\arduinoideportable\portable\packages\esp32\tools\xtensa-esp32-elf-gcc\1.22.0-97-gc752ad5-5.2.0\xtensa-esp32-elf\include\c++\5.2.0/functional line 1858
0x400d7f8d: AsyncEventSource::send(char const, char const, unsigned int, unsigned int) at c:\arduinoideportable\portable\packages\esp32\tools\xtensa-esp32-elf-gcc\1.22.0-97-gc752ad5-5.2.0\xtensa-esp32-elf\include\c++\5.2.0/functional line 1858
0x400d17d3: loop() at C:\ArduinoIDEPortable\portable\sketchbook\ESP32\SolarLoggerJune12/SolarLoggerJune12.ino line 151
0x400df329: loopTask(void*) at C:\ArduinoIDEPortable\portable\packages\esp32\hardware\esp32\1.0.6\cores\esp32/main.cpp line 23
0x40089afa: vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c line 355 (discriminator 1)
referring to this line in my code
151: events.send( mycWatts , "cwatts", millis());
It doesntt happen every time but its realy giving me a headache. Any ideas?
button.addEventListener("click", async(_) => {
try {
const response = await fetch("board", {
method: "post",
body: {
"id":1,
"t1":2,
"t2":3
}
});
console.log("Completed!", response);
} catch (err) {
console.error(`Error: ${err}`);
}
}); `DefaultHeaders::Instance().addHeader("Access-Control-Allow-Origin", "*");
DefaultHeaders::Instance().addHeader("Access-Control-Allow-Headers", "Content-Type");
I'm trying to let ESPAsynchWebServer on an ESP32 serve all JPG-Images in SPIFFS as follows:
server->on("^(([/|.|\w|\s])*)\.jpg$", HTTP_GET, [] (AsyncWebServerRequest *request) {
String name = request->pathArg(0) + ".jpg";
request->send(SPIFFS, name, "image/jpg");
});
Unfortunatel, it never serves the images.
I added compiler.cpp.extra_flags=-DDASYNCWEBSERVER_REGEX to platforms.local.txt
The files are called like «aed3.jpg» oder «bcd.jpg».
If anyone sees how I sould change the regex to mach my needs, please help me.
Thank you very much, Dani
server.serveStatic setup? I have used that for some time now and find it the best way to serve files. You should be able to just serve the files from a specific directory (I have not tried, I always use the root directory), and you could put your .jpg in there. See here for an example usage in one of my projects: https://github.com/sillyfrog/PrettyLights2/blob/bbed6c986609ad2b17e7be4eaa7f512c87c81b75/src/main.cpp#L839 (this code allows you to change between LittleFS and SPIFFS - now SPIFFS is EOL I would suggest moving to LittleFS for a new project).
Hello
I am running the interface on the local server using the asyncy web server library. no problem here
but 2 or more esp32s are connecting to each other, the server esp32 needs to send data to the client esp32, for this they need to send data between themselves via http post. How can I do this?
Are there any examples of dynamic web pages using ESPAsyncWebServer ?
I would like to GET and POST data without having to reload the page every time.
Right now each request ends with redirect which reloads the page:
server.on("/settings", HTTP_POST, [](AsyncWebServerRequest *request)
{
if (request->hasArg("save_output"))
{
// do something with the received data
request->redirect("/settings");
}
else
{
request->redirect("/settings");
}
});But request->redirect("/settings"); reloads the page.
Can I change this behavior ?