# Replication (DOREPLIFETIME) **URL:** \ **Category:** Multiplayer & Networking\ **Tags:** Networking, Replication, unreal-engine, question\ **Created:** [October 15, 2014, 6:50pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248 "2014-10-15T18:50:27Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![envenger](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@envenger](https://forums.unrealengine.com/u/envenger)\ **Post date:** [October 15, 2014, 6:50pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/1 "2014-10-15T18:50:27Z")
Hi, I started going through the replication system today. I am using C++ so there is not much documentation or guides on c++ sadly. I was going through the the shooter example codes. I found some macros used like DOREPLIFETIME\_ACTIVE\_OVERRIDE DOREPLIFETIME\_CONDITION DOREPLIFETIME What are their functions and what do they do exactly? I also found functions called GetLifetimeReplicatedProps and PreReplication in the shooter class. What are their uses? Are there any in depth replication documentation or guides for c++ out? ---
**Author:** ![eXi](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/exi/32/906583_2.png) [@eXi](https://forums.unrealengine.com/u/eXi)\ **Post date:** [October 15, 2014, 7:34pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/2 "2014-10-15T19:34:59Z")
Have you looked into this Wikisite? > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official... At the bottom there are c++ examples. I know that you asked for the meaning the the functions (i can’t help there), but i don’t know if you have problems using the system at all. So i hope this site helps you. ---
**Author:** ![envenger](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@envenger](https://forums.unrealengine.com/u/envenger)\ **Post date:** [October 16, 2014, 5:39pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/3 "2014-10-16T17:39:16Z")
Seen it but it don’t exactly mention what the `DOREPLIFETIME` and similar function does and why is it written inside `GetLifetimeReplicatedProps` function. As far as I know having `UPROPERTY(Replicated)` alone replicates the variable. So why are the extra things needed? ---
**Author:** ![envenger](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@envenger](https://forums.unrealengine.com/u/envenger)\ **Post date:** [October 16, 2014, 6:27pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/4 "2014-10-16T18:27:25Z")
I went through the file UnrealNetwork.h Where those macros are declared but I there is no definition on what they exactly do and how they work. ---
**Author:** ![eXi](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/exi/32/906583_2.png) [@eXi](https://forums.unrealengine.com/u/eXi)\ **Post date:** [October 16, 2014, 6:44pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/5 "2014-10-16T18:44:34Z")
Found something for you i guess: > **[Network Tips and Tricks in Unreal Engine 4](https://www.unrealengine.com/en-US/blog/network-tips-and-tricks)** > > I wanted to talk about a few tips that are good to know about when dealing with replicated properties in native code. The full explanation of how to replicate a property is somewhat out of the scope of this article, but I can quickly go over the... The macro is for more controll. It’s a condition. Just read the part at CONDITIONAL PROPERTY REPLICATION (: ---
**Author:** ![anonymous\_user\_49a519741](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_49a519741](https://forums.unrealengine.com/u/anonymous_user_49a519741)\ **Post date:** [December 1, 2016, 11:57pm UTC](https://forums.unrealengine.com/t/replication-doreplifetime/296248/6 "2016-12-01T23:57:24Z")
I found a thread that covers this. It begins with the blog post that eXi provided in their comment. The thread covers a bit more, however, including the ‘override’ version of the macros. [https://forums.unrealengine.com/showthread.php?1690-New-blog-post-Network-Tips-and-Tricks](https://forums.unrealengine.com/showthread.php?1690-New-blog-post-Network-Tips-and-Tricks)