Max payload size on Canton

Questions
1

Hi Team,

I have a follow-up question from this: Max Payload Size

Is this applicable to Canton, i.e. once we have introduced all the components in the path (participant node, sequencer, mediator, etc).

Many thanks!

kc

1 Like
2

Hi KC,

Canton also uses GRPC for communication between nodes. Therefore, any message exchanged between nodes needs to be <=2GB.

In the default configuration, we apply a default limit of 4MB. If you run into errors, you may want to increase it. The relevant settings are here:

canton.<path-to-my-domain>.domain-parameters.max-inbound-message-size
canton.<path-to-my-participant>.ledger-api.max-inbound-message-size
canton.<path-to-my-node>.admin-api.max-inbound-message-size

Unfortunately, due to GRPC limitations, Canton will reject a command with a low-level exception, if the corresponding transaction is too big. We are working on this.

Hope that answers your question,
Matthias

1 Like
3

Thanks @MatthiasSchmalz So I will assume that the limiting factor is on GRPC, and not in any components along side the path. Thanks again.

cheers,
kc