ChannelRestrictions is the mssage which conveys restrictions on channel creation for an orderer.

Carries a list of bootstrap brokers, i.e.

KafkaMessage is a wrapper type for the messages that the Kafka-based orderer deals with.

KafkaMessageConnect is posted by an orderer upon booting up.

KafkaMessageRegular wraps a marshalled envelope.

KafkaMessageTimeToCut is used to signal to the orderers that it is time to cut block <block_number>.

KafkaMetadata is encoded into the ORDERER block to keep track of Kafka-related metadata associated with this block.

SeekInfo specifies the range of requested blocks to return If the start position is not found, an error is immediately returned Otherwise, blocks are returned until a missing block is encountered, then behavior is dictated by the SeekBehavior specified.