Message Type

The C API supports three message types:

• MQ_BYTES_MESSAGE, which contains a set of bytes in a format determined by the application

• MQ_TEXT_MESSAGE, which is a simple MQString

• MQ_MESSAGE, which contains a header and properties but no body

Since performance varies with the complexity of the data, text messages are slightly more expensive to send than byte messages, and messages that have no body are the fastest.