Sending a NOTIFICATION TYPE (0x02) message without service discovery between two devices

[jennyj1]

Hello Community,

I was trying to send a NOTIFICATION type of message of message_type 0x02 without service discovery (service discovery = false). I have events and event groups as well. First of all is this kind of communication feasible between two devices?

I have tried changing the message type to notification type and sending it using app_->send(). I have tried sending it using notify and subscribe. As soon as the message type is notification type the data is not received.

I have used the subscribe-sample.cpp and notify-sample.cpp in the examples folder to achieve this making service discovery as false.

[jennyj1]

My requirement says that I need to send a service ID with multiple method IDs. I have considered these method IDs as event IDs for my implementation.

[fcmonteiro]

Hello @jennyj1,
Notifications do not work without Service Discovery, this is because the whole subscription mechanism is part of the Service Discovery.

It's possible to use methods without Service Discovery ("static routing", e.g. test/payload_tests). And there as many methods than events/notification identifiers available.

In theory, it could be possible to implement "Unicast Service Discovery"(would be needed to support Service Discovery via TCP), but this is neither implemented nor planned.