Improvement
- [NETCMECTH-405] - Support .NET10.0, remove .NET6.0
- [NETCMECTH-404] - Load settings from JSON file
Thursday, 25 December 2025
Release Notes - CME STP Handler .NET - Version 4.2.0
Release Notes - CME STP FIX - support NET10.0
Update details:
- OnixS FIX Support Pack update for CME STP FIX - support <.NET10.0>
- OnixS FIX Support Pack update for CME STP FIX - remove <.NET6.0>
Updated reference implementation sample distributions incorporating the FIX Dialect and reference implementation samples can be downloaded from here:
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Release Notes - CME STP FIX - support NET10,0
Update details:
- OnixS FIX Support Pack update for CME STP FIX - support <.NET10.0>>/li>
- OnixS FIX Support Pack update for CME STP FIX - remove <.NET6.0>>/li>
Updated reference implementation sample distributions incorporating the FIX Dialect and reference implementation samples can be downloaded from here:
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Tuesday, 23 December 2025
Release Notes - .NET FIX Engine - Version 1.18.0
Improvement
- [NETCOREFIXENGINE-1898] - LME Select samples - support NET10
- [NETCOREFIXENGINE-1872] - Message.ToJson() should consider the presence of JSON symbols inside tag values
- [NETCOREFIXENGINE-1845] - Add the "Controlling outgoing message flow" page
- [NETCOREFIXENGINE-1844] - Add the "Memory Consumption" page
- [NETCOREFIXENGINE-1843] - Add an additional ability to deallocate memory after an overflow issue
- [NETCOREFIXENGINE-1842] - Update Scheduler docs for the case of overlapping schedules
- [NETCOREFIXENGINE-1820] - Support the MONTHYEAR type validation
Task
- [NETCOREFIXENGINE-1885] - Add EP300 to the Engine Package
- [NETCOREFIXENGINE-1865] - Remove .NET 6 libraries
Bug
- [NETCOREFIXENGINE-1884] - Session.LogonAsInitiator() throw an exception when a hostname is used during the connection via HTTP proxy
New Feature
- [NETCOREFIXENGINE-1864] - Add .NET 10 libraries
- [NETCOREFIXENGINE-1862] - Make the file flushing policy configurable
- [NETCOREFIXENGINE-1831] - KeepAllRelevantMessages mode for ResendingQueueSize
- [NETCOREFIXENGINE-1802] - EngineSettings.UseIndexFile
- [NETCOREFIXENGINE-1779] - Add the validation of Dictionary files against the XSD Schema
- [NETCOREFIXENGINE-996] - Add a session method to shrink the reused inbound message memory
Friday, 19 December 2025
Release Notes - LME Select update 1.9.1
Update details: OnixS FIX Support Pack update for LME Select - update for FIX API specification <1.9.1>
Updated reference implementation sample distributions incorporating the FIX Dialect and reference implementation samples can be downloaded from here:
Download authentication credentials:
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Updated individual FIX Dialect files, which reflect the corresponding changes, can be downloaded from here:
LmeSelectDropCopyFixDialect-1.9.1.zip
LmeSelectOrderEntryFixDialect-1.9.1.zip
FIX Dialect Download authentication credentials
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All FIX Dialects are session-level dialects. This requires explicit dialect specification while creating message and session objects.
You can find more information about session-level FIX dialects for:
Thursday, 18 December 2025
Release Notes - CME iLink 3 Binary Order Entry Java - Version 1.2.0
Improvement
- [ILINK3JAVA-341] - SBE iLink3 Schema Upgrade to version 9
Bug
- [ILINK3JAVA-337] - Update installToLocalRepository scripts to include onixs-sbe dependency
Release Notes - CME iLink 3 Binary Order Entry .NET - Version 1.8.0
Improvement
- [CMEILINK3CORE-411] - Fix SessionSettings.LicenceString
- [CMEILINK3CORE-401] - Add .NET 10 libraries
- [CMEILINK3CORE-370] - Generate audit trail CSV for summary files without audit trail records
- [CMEILINK3CORE-362] - Write handler version to the log
Task
- [CMEILINK3CORE-402] - Remove .NET 6 libraries
New Feature
- [CMEILINK3CORE-398] - Make the file flushing policy configurable
- [CMEILINK3CORE-397] - Add command-line arguments to the SBE Code Generator tool
Bug
- [CMEILINK3CORE-367] - Audit Trail Generator fails to process MassQuoteAck with NoQuoteEntries=0
- [CMEILINK3CORE-363] - Reconnection is not made if an Establish response is not received
Wednesday, 17 December 2025
Release Notes - FIX Engine Java - Version 2.15.0
New Feature
- [JAVA-3514] - Add API to send message batches only after an explicit flush to ensure durable-before-send ordering
Improvement
- [JAVA-3498] - Implement Session.flushSessionStorage(boolean flushMetadata) method
Release Notes - .NET FIX Engine - Version 1.17.6
Bug
- [NETCOREFIXENGINE-1894] - Incoming messages can be missed in the summary log file on certain conditions
Thursday, 11 December 2025
Friday, 5 December 2025
Release Notes - .NET SBE Codec - Version 4.6.1
New Feature
- [SCN-85] - Add settings to set a string that contains the license file content
Thursday, 4 December 2025
Wednesday, 3 December 2025
Release Notes - CME iLink 3 Binary Order Entry C++ - Version 1.19.0
Task
- [ILINKBOECPP-1151] - Support schema version 9
New Feature
- [ILINKBOECPP-1144] - Improve Logging
- [ILINKBOECPP-1130] - Support the ExternalThread mode by the Scheduler
Improvement
- [ILINKBOECPP-1115] - BREAKING CHANGE: Update messaging
- [ILINKBOECPP-1103] - Improve Gateway emulator
- [ILINKBOECPP-1102] - Increase timeout resolution for Gateway::tryReceive
- [ILINKBOECPP-1075] - Improve MessageBatch sending
- [ILINKBOECPP-1043] - Get rid of the reconnecting thread for Pool and External (TcpStandard) threading models
- [ILINKBOECPP-1034] - Use the empty session's mutex when the TCPStandard stack in the ExternalThread threading model is used
Bug
- [ILINKBOECPP-1106] - Gateway::isConnectionClosed can poison the data
Release Notes - CME iLink Trading update iLink SBE schema version 9
Dear Participants,
CME has announced an iLink SBE Schema update:
https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/988413958/iLink+SBE+Schema+Update
In preparation for this change, for the channels being migrated, please complete the following steps:
-
Download the new SBE schema file
ilinkbinary.xmlas described here:
https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/714113056/iLink+Simple+Binary+Encoding#Schema-Distribution -
Verify that the downloaded file is correct (schema version = 9), following the instructions here:
https://cmegroupclientsite.atlassian.net/wiki/spaces/EPICSANDBOX/pages/714113056/iLink+Simple+Binary+Encoding#Schema-Header - Stop your application.
- Replace the currently used
ilinkbinary.xmlwith the new file. - Run the GettingStarted sample against the channel of interest and confirm that it executes without any issues.
- Start your application.
Please note: No library update is required; only the schema file needs to be updated.
Monday, 1 December 2025
Release Notes - Trading Technologies update v295-1
Update details: OnixS FIX Support Pack update for Trading Technologies - update for FIX API specification <v295-1>
Updated reference implementation sample distributions incorporating the FIX Dialect and reference implementation samples can be downloaded from here:
TradingTechnologiesClientCpp_2.3.0.0.zip
Download authentication credentials:
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onixs-trading-technologies-client-java-2.10.0-bin.tar.gz
onixs-trading-technologies-client-java-2.10.0-bin.zip
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OnixS.Net.TradingTechnologiesClient.4.4.0.zip
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TradingTechnologiesClientSample-net-4.8-x64-Setup-2.10.0.0.msi
Download authentication credentials:
User: download
Password: 6CpH7AkPwkJZMT7KItDAZKa1
Updated individual FIX Dialect files, which reflect the corresponding changes, can be downloaded from here:
FIX Dialect Download authentication credentials
User: download
Password: 6CpH7AkPwkJZMT7KItDAZKa1
All FIX Dialects are session-level dialects. This requires explicit dialect specification while creating message and session objects.
You can find more information about session-level FIX dialects for:
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