4.2.1 Start Message

Topic Version1Published10/16/2017
For StandardETPW20 v1

To begin a channel streaming session, the consumer must send a Start message to the producer as shown in the example message below, which also uses these example parameters:

Property Name




maxMessageRate [ms]


// [91e2682e-5f0a-44bc-86fb-2ba708e78f7f] Message sent at 2017-08-12 10:47:26.8676{






"maxMessageRate": 2000,  

"maxDataItems": 50}

NOTE: After receiving a Start message, a simple-streamer producer immediately sends channel metadata and begins streaming channel data messages to the consumer.

A non-simple producer must wait until it receives ChannelDescribe message(s) to respond with channel metadata and then needs a ChannelStreamingStart message before it can send channel data, as explained in the next sections.