The following section describes the MDP 3.0 message and packet structure with event based messaging.   

MDP Packet Structure

The encoded FIX transmission is sent in a packet structured as follows:

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MDP 3.0 uses the concept of sequencing and recovery by packet instead of by message. Packets may contain a single or multiple MDP messages.   

Each packet is prefixed with:

• Sequence Number
• Sending Time (nanosecond precision)

Each MDP message includes:

• Message Size
• Template ID

MDP Packet Structure Examples

The following section provides examples of MDP packet structures. 

One Packet, One Event

The following example shows the packet structure for single event in one packet.

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