---
title: Release Notes - .NET FIX Engine - Version 3.9.0.0
description: Release Notes - .NET FIX Engine - Version 3.9.0.0
---

[Release Notes ](https://www.onixs.biz/release-notes)

# [Release Notes - .NET FIX Engine - Version 3.9.0.0](https://www.onixs.biz/release-notes/release-notes-net-fix-engine-version-3-9-0-0.html)

 Written by [Admin](https://www.onixs.biz/release-notes/author/admin) | Sep 5, 2013, 12:00:00 AM

## New Feature

- [[DOTNET-1080](http://support.onixs.biz/browse/DOTNET-1080)] - Session.ReuseIncomingMessage property
- [[DOTNET-1073](http://support.onixs.biz/browse/DOTNET-1073)] - Option to specify custom thread names
- [[DOTNET-1059](http://support.onixs.biz/browse/DOTNET-1059)] - EngineSettings.ReceiveBufferSize property
- [[DOTNET-1047](http://support.onixs.biz/browse/DOTNET-1047)] - Session.MessageGrouping option should be set to "200" in Throughput sample
- [[DOTNET-1046](http://support.onixs.biz/browse/DOTNET-1046)] - TcpNoDelayOption option should be set to "false" in Throughput sample
- [[DOTNET-1043](http://support.onixs.biz/browse/DOTNET-1043)] - High Throughput Best Practices section should be added to Programming Guide
- [[DOTNET-1042](http://support.onixs.biz/browse/DOTNET-1042)] - Low Latency Best Practices section should be added to Programming Guide

## Bug

- [[DOTNET-1057](http://support.onixs.biz/browse/DOTNET-1057)] - EngineSettings.SendBufferSize is not processed correctly
- [[DOTNET-1055](http://support.onixs.biz/browse/DOTNET-1055)] - ValidateUnknownFields cannot be set in EngineSettings
- [[DOTNET-1034](http://support.onixs.biz/browse/DOTNET-1034)] - Session storage was not restored from state files which caused a sequence number mismatch

[View full post](https://www.onixs.biz/release-notes/release-notes-net-fix-engine-version-3-9-0-0.html)

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