During every connection, the MLAPI does a handshake. The handshake serves a few different purposes.

It allows for connection approval
It allows for versioning. I.E prevent different versions from talking to each ither
Encryption keys are created with a diffie hellman key exchange
NetworkConfig's are checked to be the same

If the handshake doesn't complete within the Timeout time specified in the NetworkConfig, the connection will be closed. The handshake is 2 or 4 messages long depending on if Encryption is enabled.

Getting Started

Getting Started
Library Initialization
NetworkConfig
Connection Approval

The Basics

Message System
Object Spawning
Object & Behaviour Relation
Modularity
NetworkedVar
Scene Management
Object Ownership

Components

Core Components
Prototype Components

Advanced Topics

Encryption
Networked Object Pooling
Lag Compensation
BitWriter & BitReader
Custom Transports
Optimization
Network Profiler Window
Dedicated Servers

Misc

Roadmap
Limitations

Legacy

~Observer~
~Command & Rpc~
~Passthrough Messages~
~SyncedVars~
~Targeted Messages~
~Differences from HLAPI~
~Binary Serialization~