Introduction
OnixS ultra-low latency .NET CME iLink 3 Binary Order Entry Handler is a .NET class library that encapsulates the CME iLink 3 Binary Order Entry protocol.
Main Features
- Ultra-low latency access to CME Market Segment Gateways (MSGW) and Convenience Gateway (CGW).
 - Easy-to-use API.
 - Fault Tolerance.
 - Message Gap Detection and Retransmission Handling.
 - Automated Downloading of GTC and GTD Orders.
 - Complies with CME Audit Trail Requirements.
 - Flexible Logging.
 - Pre-Certified.
 
Services
The Handler provides the following services:
- Manages network connections.
 - Implements Session Security/Authentication.
 - Supports FIX Simple Binary Encoding (SBE), delivering faster encoding/decoding.
 - Supports FIXP Performance (FIXP) session management point-to-point session layer protocol.
 - Manages the FIXP (iLink 3) application layer (defines business-related data content).
 - Creates (outgoing) SBE messages.
 - Parses (incoming) SBE messages.
 - Persists messages and session state.
 - Recovers the iLink 3 session state after restarting.
 - Detects the telecommunication link failures and reconnects automatically.
 
Architecture
The following image is a high-level overview of the Handler architecture: