Firestore GetDocument example not working but others like create, patch they work fine.

[aseitasi15]

Describe the bug
The Firebase-ESP-Client is testing with a couple of my ESP32. Firebase's Firestore DB is ready and also user's email and pw are set too.

Among the examples you provided, CreateDocuments, PathDocument works well without any problems.

But in GetDocument,

if (Firebase.Firestore.getDocument(&fbdo, FIREBASE_PROJECT_ID, "", documentPath.c_str(), mask.c_str()))
Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
else
Serial.println(fbdo.errorReason());

If I run the getDocument method, I got this error.

Get a document... Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled

Your getDocument method is
bool FB_Firestore::getDocument(FirebaseData *fbdo, const char *projectId, const char *databaseId, const char *documentPath, const char *mask, const char *transaction, const char *readTime)

The last two parameters don't need?
All works fine but is the only getDocument is not working on my end? it's weird. Any clue for this?

To Reproduce
Firestore/GetDocument/GetDocument.ino

IDE and its version:

• Arduino IDE 2.0, & Arduino IDE 1.8.13

Test devices

• ESP32 Dev Module
• ESP32 Wemos Lolin32

[mobizt]

You should follow the issue template by providing the minimum clean code.

[aseitasi15]

Describe the bug
The Firebase-ESP-Client is testing with a couple of my ESP32. Firebase's Firestore DB is ready and also user's email and pw are set too.

Among the examples you provided, CreateDocuments, PathDocument works well without any problems.

To Reproduce
//https://github.com/mobizt/Firebase-ESP-Client/blob/main/examples/Firestore/GetDocument/GetDocument.ino
void loop()
{

if (Firebase.ready() && (millis() - dataMillis > 60000 || dataMillis == 0))
{
    dataMillis = millis();

    if (!taskCompleted)
    {
        taskCompleted = true;

        FirebaseJson content;

        content.set("fields/Japan/mapValue/fields/time_zone/integerValue", "9");
        content.set("fields/Japan/mapValue/fields/population/integerValue", "125570000");

        content.set("fields/Belgium/mapValue/fields/time_zone/integerValue", "1");
        content.set("fields/Belgium/mapValue/fields/population/integerValue", "11492641");

        content.set("fields/Singapore/mapValue/fields/time_zone/integerValue", "8");
        content.set("fields/Singapore/mapValue/fields/population/integerValue", "5703600");

        //info is the collection id, countries is the document id in collection info.
        String documentPath = "info/countries";

        Serial.print("Create document... ");

        if (Firebase.Firestore.createDocument(&fbdo, FIREBASE_PROJECT_ID, "" /* databaseId can be (default) or empty */, documentPath.c_str(), content.raw()))
            Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
        else
            Serial.println(fbdo.errorReason());
    }


    String documentPath = "info/countries";
    String mask = "Singapore";

    Serial.print("Get a document... ");

    if (Firebase.Firestore.getDocument(&fbdo, FIREBASE_PROJECT_ID, "", documentPath.c_str(), mask.c_str()))
        Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
    else
        Serial.println(fbdo.errorReason());
}

}

Expected behavior
Getting request infomation.
If I run the getDocument method, I got this error.
-> Get a document... Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled

IDE and its version:

• Arduino IDE 2.0, & Arduino IDE 1.8.13

**Test devices

ESP32 Dev Module
ESP32 Wemos Lolin32

Additional context
if (Firebase.Firestore.getDocument(&fbdo, FIREBASE_PROJECT_ID, "", documentPath.c_str(), mask.c_str()))
Serial.printf("ok\n%s\n\n", fbdo.payload().c_str());
else
Serial.println(fbdo.errorReason());

Your getDocument method is
bool FB_Firestore::getDocument(FirebaseData *fbdo, const char *projectId, const char *databaseId, const char *documentPath, const char *mask, const char *transaction, const char *readTime)

The last two parameters don't need?
All works fine but is the only getDocument is not working on my end? it's weird. Any clue for this?

[mobizt]

This is due to accidently zero length payload was sent to TCP client and causes the error in ESP32.

You can try this gist
https://gist.github.com/mobizt/7561f9bab395f5e56bdce26cdc74d408

By replace this FB_TCP_Client.cpp with the original file in folder src/wcs/esp32

The library update is not available at this time and will be available when I finished the internal update.

[mobizt]

For the get document function's arguments, you can read the Firestore document how to use it.

[aseitasi15]

@mobizt It works after replacing the FB_TCP_Client.cpp. Thanks.
When you will update your library?

[mobizt]

Until all works done which some are related to bugs which are trying to fix and can't tell when it was done.