Hi @Dmitriy,
I tried to use Blynk client from this link https://github.com/blynkkk/blynk-server/tree/master/client
I use maven to compile the blynk source code to client-0.39.2-SNAPSHOT.jar
And emulate the Smartphone App client
java -jar client-0.39.2-SNAPSHOT.jar -mode app -host localhost -port 9443
register username@example.com UserPassword
Butget error
ERROR - Client socket closed. Reason : Server closed client connection.
I don’t know this client still working or because my mistake?
@Blynk_Coeur, The question was about Client, not server! Those are separate programs for different purposes. The client is supposed to emulate the app, but I have never used it.
yes, it’s about client to emulate the app.
The purpose I want to create the account and dashboard automatic in my local server.
I can signup the account and scan qr to clone dashboard manual but it waste time.
oh my God.
I was sleeping
Parhaps the server is configured the way it does not allow to create new account? Just a guess… @Dmitriy should know the answer, as it is his “child”
Yes, @Dmitriy maybe will know.
At least, I try to know how the app connect to blynk server and what data it send to server to create the account and dashboard. But I can not find the document about how to connect to blynk mqtt broker or something like that.
I don’t know to be honest. I haven’t use it for a year 
and many things were changed since than.
Okay thank you.
I will try other ways.
