multiplayer

[merry haven]

Ah OK thanks

[violet sentinel]

Hello. I'm new to Unreal Engine. I got a task to "introduce traffic encryption between Client and Dedicated Server" but can't find any documentation to it. Is there any support for it or the only solution will be to write custom networking from scratch?

[thin stratus]

Has anyone managed to succesfully setup a VirtualBox for testing Steam Multiplayer?

Cause I doubt that the VBox can run a UE4 Game

[glad sedge]

ugh, VirtualBox.

I can barely get wordpress working, fuck UE4

[thin stratus]

I'm sick of packaging and sending the project to a second pc

[glad sedge]

Yeah I hear ya

I mean it can't be impossible, right?

[rare cloud]

@thin stratus, depend of your game but some Mac user use virtual machine to play some Windows game

performance will be far from optimal but I guess you can make your tests

depend of your hardware too

[thin stratus]

I can't start the Project though

https://puu.sh/xIs3E/85bc49d74d.png

I doubt that the VBox supports that

As it's not directly using my 1080

Nope, can't get passed that error

[past totem]

How do I set a variable for the server? When I set it it only sets to the client

It's on replicated

[thin stratus]

Use an RPC to set it on the Server Side

[past totem]

RPC?

[thin stratus]

And read my Compendium, because this is pretty basic

(Pinned to this channel)

[past totem]

Like this? http://prntscr.com/gpga0d

[thin stratus]

Yes

[past totem]

Doesnt work

[thin stratus]

There are rules to it

Read my compendium (:

[past totem]

Okey, see ya in 2 years

[thin stratus]

Welcome to GameDev (:

[past totem]

So can anyone tell me how to make this work on the server pls lol

[pallid mesa]

Yes, listen to cedric.

[past totem]

I know how replication works

I just dont understand why I cant this variable on the server

[pallid mesa]

Lol

Download the compendium and see if you are doing something dumb

[thin stratus]

If a ServerRPC doesn't work, it's mainly cause of Ownership

ServerRPCs only work in Client owned Actors

Such as PlayerController

It's all written in my comp (:

[jolly siren]

where are you calling the rpc from?

[old swift]

Hey fellas , can anyone tell me how it is possible that i could create a multiplayer vr game and then test over steam. Well i did it already but so manny problems , for instance the first problem i encountered was when me and my friend logged into our different steam account and we tried to connect via steam , it did connect but when i tried to connect to my friend who lives in another country we were unable to connect. by the way i am using steam app id 480, (Spacewar). is there another way i could connect internationally to him, by the way i followed this tut https://www.youtube.com/watch?v=TPakLkxc6f0

[thin stratus]

You generally only need Steam if you really need to test Steam functionality

Using 480 has the issue of spamming search results with other people that use the app id

Resulting in SearchResults to be empty

Sometimes Precence searching also filters people that are not in your country

In general, if you just want to test VR Multiplayer, I would recommend hosting a Game without Sessions

Just with OpenLevel?listen

And then connecting via console direct IP

[old swift]

@thin stratus , right now i have increased the sessions to max search 1000

i have to make it 0?

[thin stratus]

No, the Max Results is fine

It should work, but sometimes Presence and 480 manage to swallow your results

[old swift]

yeah i know ! do you like have some other stable option i could use.?

my main focus is to connect with my buddy who is in some other part of the world

[thin stratus]

Like I said, connect via IP

[old swift]

Thanks buddy and there is only one little problem , i am not that of a networking guy but how? do you have like a tutorial

?

i could follow

i am new to unreal who bought HTC VIVE and want to have some fun

@thin stratus you there buddy?

[thin stratus]

You could check my Compendium

Pinned to this Channel

In general, you open a ListenServer on one PC

So "OpenLeveL" node with "listen" as an option

And then, either you use the Console onthe second pc

or use UI and forward the entered IP to a "Execute Console Command" node

Both need you to do "open IPADDRESS"

where IPADDRESS is the public ip of the ListenServer

[jagged knot]

I need some help again... I set up the "advanced sessions" plugin together with "advanced steam sessions". Now; I used the default character blueprint wth a custom skeletal mesh; which works in all tutorials. For some reason, player 2 will spawn in player 1's running game, but movement will not be replicated

I did some testing and made an Event OnPostLogin that gives the joining playercontroller a white drone if it has network authority, and a black one if it doesn't. Now; Player 1 will see two white drones while Player 2 sees two black drones...?

Also; for some reason player 2 can hear player 1...? I didn't even make a voice chat

[short island]

evening guys

just a quickie - my Event Begin Play isnt firing in a multiplayer game

there an alternative i should be using?

[wary willow]

@old swift Are you and your friend connected to the same download region on Steam?

@short island Way too vague

My Event Begin Plays fire off just fine

@jagged knot ASS is the plugin?

Not sure why'd you use both.

[wary willow]

Probably causing some issues there @jagged knot

[short island]

literally just that in a spawned player controller 😃 do i need an auth check?

[wary willow]

Only use one.

@short island Do you know how UMG/Widgets works in Multiplayer?

[short island]

not in multiplayer, no

[wary willow]

K

[jolly siren]

lol

[wary willow]

Look at the top right

Of the create widget node

If you still need help, let me know.

Also, is this on dedicated server?

@jolly siren You laughing at my ASS pun?

[short island]

ohhh, these can only be executed on a client?

[wary willow]

BINGO

They are only for clients

Hm, I thought @thin stratus comp said something about that

BTW, hopefully we'll see another revision when he has time 😉

@short island https://gyazo.com/b9673dc0411e7044ec57a4252abf602f

[short island]

thank you my mate

@wary willow so i added super::BeginPlay() to my c++ base, and now the BP event fires

that expected behaviour? was my understanding that Super called the parent function's method

[wary willow]

@short island 👍

Ummm, Super should called Parent Logic, and if you don't call Super, you are overwriting it essentially.

TBH, I never gave it much thought in Multiplayer though

[short island]

yea that's what i thought, curious how adding super let me call the BP side of stuff

[wary willow]

I don't see why it would behave any different.

[short island]

seems like its not a multiplayer thing

it wasnt being called even when i ran it single player

[wary willow]

Hm?

The Begin Play just never executed at all?

[short island]

exactly

adding Super fixed it :S

very odd

oh! the BP hookin must be deep in the parent classes

not putting super must of prevented the delegate from being called somewhere up the chain

[wary willow]

@short island So, I didn't know this, but if you check this out: https://github.com/EpicGames/UnrealEngine/blob/c9f4efe690de8b3b72a11223865c623ca0ee7086/Engine/Source/Runtime/Engine/Private/Actor.cpp#L2449

[short island]

ooooh!

wow

the more you know eh

there's a lesson in there somewhere

[thin stratus]

So, as I haven't touched Steam and Dedicated Servers yet.

I assume as soon as I have Steam in my Client, I can#t just "open IP" on a Dedicated Server anymore?

[wary willow]

@thin stratus Isn't that all it's doing in the backend anyway?

Is the Dedicated Server on the Master?

[thin stratus]

Na, it's just a normal Dedicated Server for now

It's also not meant to be found via Sessio nresults or so

Just a simple direct IP connection

Guess Steam doesn't like that?

[wary willow]

Probably not, since it's probably trying to get it off the Master Server list

Or something

[thin stratus]

Hm okay, so Register Server needs to use Steam

Guess I'm at the position where everyone is

that tried to use team and dedicated servers

[wary willow]

Hehe

Interesting

The Unreal C++ Multiplayer course just went live

Which is nice, because that's one area I've been dragging my feet on with learning

[inner iris]

Awesome stuff

Can't wait to start doing it

[wary willow]

Well

As long as they learned their lessons from Tanks

But the current outline is pretty standard

[inner iris]

Got a link to the course?

[wary willow]

https://www.udemy.com/unrealmultiplayer

[inner iris]

Their forums seem pretty empty

Thanks

[thin stratus]

@jolly siren Did you fight with Steam Dedicated Server stuff?

[inner iris]

Ah I didn't go with the kickstarter so I'll have to wait to watch until later

[thin stratus]

Iirc you had Voice problems, so just a wild guess

[wary willow]

😉

[inner iris]

That's fine, still have LOTS of c++ to learn

Will be better to learn when there are comments anyway

Helps find common issues

[jolly siren]

@thin stratus yeah I've been using steam dedicated server for a long time. What's up?

[thin stratus]

I simply added Steam to the Project and that works fine so far.
We use a custom Master Server that lists our Dedicated Servers, and connecting is a simple "open IP"

However after adding Steam, it simply does nothing when tryting to connect

Turning steam off in the ini makes it work again

I assume I can't connect to a random Dedicated Server anymore when Steam is on.
Do you happen to know what I need to add to make that simply work?

I use "simply" too often

[jolly siren]

haha

[thin stratus]

Damn now I noticed it and it's gonna annoy me

[jolly siren]

so you don't want to simply use sessions?

[thin stratus]

[2017.09.25-20.15.02:552][516]LogGameMode: Display: Match State Changed from InProgress to LeavingMap
[2017.09.25-20.15.02:552][516]LogGameState: Match State Changed from InProgress to LeavingMap
[2017.09.25-20.15.02:552][516]LogNet: Browse: 13.59.233.23:7780//Game/Protoball/Maps/MainMenu_LockerRoom?PlayerSessionID=59b96537c243d0052115e6e9
[2017.09.25-20.15.02:552][516]LogTemp: Display: ParseSettings for GameNetDriver
[2017.09.25-20.15.02:552][516]LogTemp: Display: ParseSettings for SteamNetDriver_0
[2017.09.25-20.15.02:553][516]LogTemp: Display: ParseSettings for PendingNetDriver
[2017.09.25-20.15.02:553][516]LogInit: WinSock: Socket queue 32768 / 32768
[2017.09.25-20.15.02:556][516]LogInit: WinSock: I am DESKTOP-RSJA84F (192.168.0.185:0)
[2017.09.25-20.15.02:556][516]PacketHandlerLog: Loaded PacketHandler component: Engine.EngineHandlerComponentFactory (StatelessConnectHandlerComponent)
[2017.09.25-20.15.02:556][516]LogNet: Game client on port 7780, rate 10000```

No, we just want to connect via IP

Above log is all that happens

No error, no warning, no failed connection

[jolly siren]

that is the server logs?

[thin stratus]

I assume I still need to register the Server to steam?

No, the Client

[jolly siren]

so you don't have a GameSession::RegisterServer at all?

I don't think you will be able to join without registering

but yeah I haven't done direct ip stuff with steam. I just use sessions

[thin stratus]

That's fine

would you mind telling me how you register the server?

I would rather see working code before try and error

Also does the Server need any specific things to run steam?

I assume I need to have dedicated servers unlocked in the steam app?

Kinda annoying given that the server isn't even using steam

[jolly siren]

windows or linux?

[thin stratus]

Windows

It's as simple as it gets. Packaged-+ Server Binaries

Put onto a Windows Server

Works like a charm without steam

[jolly siren]

haven't done windows in a while, but I think you have to copy the dll files from Engine/Binaries/ThirdParty/Steamworks/SteamvXXX/Win64 to your projects BInaries/Win64 folder

not sure what you mean by having dedicated servers unlocked in the steam app. I don't think there is anything you have to do on the steam app side. Don't even need it installed AFAIK

[thin stratus]

Weird enough thatI can't connect to them

I mean it's a direct IP connect

Could steam not be annoying sometimes?

If you answer, please ping from now on as I need to head off. The nI can find it later (or just pm me)

Thanks for you help!

Appreciated

[jolly siren]

void AFPSGameSession::RegisterServer()
{
    IOnlineSubsystem* const OnlineSub = IOnlineSubsystem::Get();
    if (OnlineSub)
    {
        IOnlineSessionPtr Sessions = OnlineSub->GetSessionInterface();
        if (Sessions.IsValid())
        {
            AFPSGameMode* GameMode = Cast<AFPSGameMode>(GetWorld()->GetAuthGameMode());
            if (GameMode)
            {
                MaxPlayers = AFPSGameSession::DEFAULT_NUM_PLAYERS;

                HostSettings = MakeShareable(new FOnlineSessionSettings());
                // Register the gamemode and map that were loaded on server startup
                HostSettings->Set(SETTING_GAMEMODE, FString(*GameMode->GetName()), EOnlineDataAdvertisementType::ViaOnlineService);
                HostSettings->Set(SETTING_MAPNAME, GetWorld()->GetMapName(), EOnlineDataAdvertisementType::ViaOnlineService);
                HostSettings->bUsesPresence = false;
                HostSettings->bIsLANMatch = false;
                HostSettings->bIsDedicated = true;
                HostSettings->bShouldAdvertise = true;
                HostSettings->bAllowJoinInProgress = true;
                HostSettings->NumPublicConnections = MaxPlayers;
                Sessions->CreateSession(0, GameSessionName, *HostSettings);
            }
        }
    }
}```

There is my registerserver, but it is session based

[thin stratus]

Yeah but there is a difference

Sessions use presence

Dedicated servers don't

So that might just work fine for me

Thanks!

[jolly siren]

no problem 😃

[inner iris]

Is it possible to spawn in as a character at the beginning of a match / round but have the controller possess a fixed camera looking over the map while the character gets sent to the correct spawn location / gets initialized (team colors take a few seconds to take effect), then nicely repossess the character when he is ready? I have the actual possession of the spectator pawn working fine on begin play but then I can’t repossess the original character that I spawned in with as I guess I don’t have a reference to it (as getting a reference needs at least some time which snaps the player view from the uninitialised character to the spectator pawn and back again)

[wary willow]

@inner iris 😉

Now, this is just my opinion, but you are doing it all wrong!

Make it simple for yourself

When the player enters the match, have them possess a spectator pawn

(or your fixed cam, or pawn with fix cam, whatever)

If the player chose a specific character

Whenever that character/pawn is place in the right location

and the match starts, then just Unpossess Spectator and Possess Correct Character/Pawn

(the only thing that really matters is your PC, the body means nothing)

[inner iris]

That makes way more sense, I was originally thinking of something along those lines but completely blanked on the fact that I can simply replace the character with a spectator pawn in the game mode settings... however I’m still not sure how you’d pick the right character, since there could be 12 being spawned at once (AI controlled characters) Perhaps actually spawning the character through the controller to get the direct reference?

@wary willow Yeah definitely have to reinforce the fact that the characters are just temporary puppets- controller is everything!

[wary willow]

Hmmm, well, obviously I have no idea how your logic is flowing. But, I'd probably do something along the lines of this: On Game Join, take values, Server Spawn that character in world, assign it some PlayerID value. The player has a PlayerID also, match them up, ggwp. I'm not sure how I feel about the Character Spectator spawning it's body and then possessing it. I mean, if it works, it works.

Just remember you have a list of PlayerControllers

[inner iris]

Good idea with the IDs- to match them up would you have to use the GetAllActorsOfClass and run through a for loop until the IDs match? (I guess it’s fine to do since it’s only at the start of a match)

Alternatively I can just have 12 AI characters spawn and then unpossess one from the desired team of the player, then reposess it with the player controller.

Thanks for the help and ideas, will try them out 😃

[floral bison]

when i change number of players under the play button is that supposed to simulate multiplayer?

[hasty adder]

@inner iris that's the setup inuse, Cept bp

Default pawn class is spectator. And players choose team, which sets an enum in there ps and PC , they then update their defaultpawnclass and server restarts llayer

I do it in bp but have an example project in 4.15 if you want to look at it. I have it uploaded for peeps

https://www.dropbox.com/s/bk9sjdveujdvmew/TeamSelect-CTF.zip?dl=0 ^.^ or anyone.

[inner iris]

@hasty adder Many thanks, downloaded! Will check it out in the morning

[hasty adder]

o/ for blueprints and this method use over overrides are great

Such as selecting team down points and such

Spawn

[tacit hazel]

thank you @chrome bay

how can I have people join my server, I know I need to port forward, but what is port forwarding and how do I do it?

[jolly siren]

the internet

[brittle sinew]

Each device/IP, both internal and external, has ports, though by default you can't access internal devices from the external network/internet

Port forwarding allows you to "forward" a port on your external router to a port on an internal device—allowing you to access a service externally

How to do it depends on your router model, but it'll be in your router control panel

[tacit hazel]

Service Name Source Target Port Range Local IP Local Port Protocol

are the things I need to fill out in my router

no idea what UE4 needs though

[brittle sinew]

I believe a server itself only needs 7777

[tacit hazel]

is that port range? or local port?

[brittle sinew]

(though you can manually open a server on any port)

Both, unless you want to forward a different external port to your internal 7777

[tacit hazel]

protocol tcp?

[brittle sinew]

You can forward any external port to an internal network IP+port, they don't have to match (but they usually do since services tend to use predictable ports)

I would forward both

[tacit hazel]

see I don't understand a whole lot about it

[brittle sinew]

Well, plenty of resources online about it 😃

This type of stuff is pretty out of the scope of this chat

[tacit hazel]

oh ok, im sorry

[neon mango]

Anyone here famliar with the net code from CharacterMovementComponent? I ask because I think I'm begining to understand it and just want to make sure.

It seems like they take the input from the player, save it, and play it back, but is that all there is to it?

Then they use ClientPrediction some how but still hazy on what that does exactly

[floral bison]

Anyone know why i might be getting this error when trying to join a session: TravelFailure: LoadMapFailure, Reason for Failure: 'Failed to load package '/Game/Maps/UEDPIE_0_Arena_01''. Shutting down PIE.

could it be because im running it from 2 instances of the editor to test?

in instance 1 i am able to start a session and join the level but when the other tries to join it crashes with that

[old swift]

@thin stratus Thanks buddy for the solution , i have to try it though, @wary willow And Yes!

[wary willow]

@old swift huh?

[old swift]

@thin stratus Thanks buddy for the solution , i have to try it though, @wary willow And Yes!

[wary willow]

?

writing it twice won't help me remember

😭

(especially with no context)

[glad sedge]

better than a kick in the nuts though..

[wary willow]

Hmm, that depends entirely on the person.

[old swift]

nah my internet is not doing well at the moment

actually you asked me yesterday "Are you and your friend connected to the same download region on Steam?" for that ques i replied Yes, you have to scroll up to see the chat

[wary willow]

Ah

[old swift]

i am gonna try that direct IP solution ,

@wary willow need to ask you what if i bought steam app id ? will it still cause error in connecting with my friend who is in some other country

[wary willow]

@old swift Nope

No region lock on your own app

[old swift]

Ohkay!

[wary willow]

The caveat to that is

[old swift]

@wary willow Sorry to bother you again i checked my download region well i have India and he has UK in his settings , Is this the problem?,

[wary willow]

@old swift Yes

Make sure both of you are in the same Region

Download Region

Now, there may be some issues with certain areas, that MAY prevent you from doing that, I don't know too much about other country's laws and wtf Steam does. I just know what I know 😉

And if you are on different regions, you won't be able to play together, at least in 480

[old swift]

thanks Buddy if this works i am gonna throw you a emoji party!

[wary willow]

Make sure that you request Steam Lobbies

on your App

MasterServers op

[old swift]

now where is that settings

😓

Thanks 😃

[floral bison]

Is there a place I can get more in on RCON? All I can find is this blurb https://wiki.unrealengine.com/Server_Administration

[warm pagoda]

Just searching for RCON

Seems to be a generic protocol

Surprisingly having trouble finding anything on the protocol in general, rather than a specific implementation for a particular game...

Frustratingly, I have nothing to provide.

Not even this is helpful: https://en.wikipedia.org/wiki/Rcon

The first linked article seems relevant, but actually makes no mention of RCON.

Everything here suggests this is a proprietary version of RCON: https://developer.valvesoftware.com/wiki/Source_RCON_Protocol

But this link suggests that maybe "Source RCON" is the original: http://wiki.vg/RCON

[twin juniper]

Does anyone know how I can (relatively) easily test Steam multiplayer without another machine?

[thin stratus]

had the same question

There is no answer to it depsite VMachine

And that doesn't work well either (if at all)

[twin juniper]

darn it

Realistically, this is more a Steam issue than a UE one

[thin stratus]

Correct, as Steam doesn't allow you to have 2 games on the same account

[twin juniper]

AFAIK you can't have two Steam instances/accounts on the same machine either

[thin stratus]

Yeah that goes with it

Also, would you mind adjusting your Discord displayname? :P

[twin juniper]

Huh?

There

[thin stratus]

Thank you very much (:

So do Steam Dedicated Servers require an account or so?

As it seems like I have to register the Session so I can connect via IP to it

Weirdly enough

@rough iron Do you have any experience/information about a simple direct IP connection to a Dedicated Server when Steam is used?

It starts browsing the IP but nothing else.
I use Steam atm only for Avatar and Names

Gonna compile the Server with CreateSession in the RegisterServer function now, but wondering how that even works with Steam :/

[rough iron]

using steam sockets should be fine

if not you can not just make a direct connection if the server is behind steams nat-neg

[thin stratus]

Yeah I would've guessed so, but the log only shows it's going to "LeavingMap" and browsing but never actually joins

[rough iron]

you get the right connection URL from a search result

[thin stratus]

I just do "Open IP" atm

[rough iron]

that wont work with steam

your dedicated server is hosted on a random port that is posted to steam

[thin stratus]

Hmpf, means I need to recode my masterserver to save something else than the IP?

[rough iron]

IP and the port

[thin stratus]

Well it all works without Steam, if that's worth to mention

[rough iron]

if the dedicated server is using steam sockets you need the steams sockets ip, which is not a real IP but a unique id that you use to create the connection and handle natneg

[thin stratus]

Okay so, atm, my Server doesn't use Steam. It actually uses the IP Net Driver as its an old build.
Now the Server reports his own public IP and Port to a Master Server.
I can upload the Server with Steam Net Driver again, however how exactly do I access that unique ID?

The Server does nothing with Steam atm. I added the code to regsiter the Dedicated Session, although I'm not even using sessions after all

[twin juniper]

@thin stratus @twin juniper You can hire me as a Networking Tester.

8.5 €/h

I am always there if you need a test. 😄

lol

[rough iron]

@thin stratus if the server is not using steam sockets the ip/port should be enough

if it do uses steam sockets you have to go through all the session stuff

then the client will search for it and from the result build the right joining url

[thin stratus]

@rough iron Na, the original Server does not use that.
But the Client does. The Client has Steam and SteamSockets (Party Sessions and ListenServer).
But the Dedicated Server should just be joinable via IP.
But I don't see that working. If I enable the Steam Driver and the Subsystem on my Client, it can't connect to the Server anymore.

I also assume, if I have Steam on the Client, the Server will also have it, right?

I mean I could set "bUsesSteam" in the Server target to false

[rough iron]

that's because your client expects to use steam sockets for everything once you use the steam netdriver

it's the SocketSubsystem that decides to use one or another

if you can make a small engine change you could force it to build a plain UDP socket for the dedicated server connection

[rich apex]

Hello, is it a good idea to buffer the client's input before rpc-ing to the server or does unreal handle this automatically behind the scenes ?

I mean if unreal already has a buffer layer before rpc-ing, Ill not go through the trouble of implementing one myself

[thin stratus]

@rough iron I can make that change. Do you know where

[rough iron]

Would have to check where but it's the SocketSubsystem that you are using.

there should be something for datagram or dgram

which the UDP

[thin stratus]

Yeah there is a part where it creates the socket based on the SocketType

if (SocketType == FName("SteamClientSocket")) and else if (SocketType == FName("SteamServerSocket"))

@rough iron

I assume the "default" one would be SubsystemWindows?

That's a bit over my head right now :P

I might just use the Steam Master Server. It doesn't make much sense to keep my Master Server alive, now that we use Steam anyway

I'll see how hosting a session works. Thanks for the suggestion though (:

[thin stratus]

@jolly siren Stupid question, but what does the Server (the one the Dedicated Servers run onto) install to actually use Steam?

I doubt that I need to download steam itself and create an account, right?

[jolly siren]

correct

[thin stratus]

:D means?

[jolly siren]

You don't need steam on the deciated server.

you just need the libaries

so on windows the dlls and on linux the .so

[thin stratus]

Okay lemme check

[jolly siren]

I think that still applies. I haven't done windows in a while tho.

[thin stratus]

Is that from UE4 docs?

[jolly siren]

no, it's allars blog

[thin stratus]

Gnah, good to know

[jolly siren]

which looks to currently be down, but I looked at the cached site lol

[thin stratus]

Looks mighty fine

Thanks for that

[jolly siren]

np

[hasty adder]

This is for registering steam dedicated server? This is good for what? Prevent non steam joins?

[jolly siren]

no

just for starting a steam dedicated server

registering doesn't prevent non steam joins. that would be steam authentication

[hasty adder]

Hm I'm in the same boat but being 99% bp I've run into trouble try and keep my plugins to a minimum :/

[thin stratus]

Well I always avoided that, even with my knowledge of MP and Steam

Cause I know it's full of undocumented trouble

[vital belfry]

are there any resources for workflow when designing with MP/networking in mind?

[wary willow]

Yes

Plenty

https://wiki.unrealengine.com/Replication

https://docs.unrealengine.com/latest/INT/Resources/ContentExamples/Networking/index.html

https://www.unrealengine.com/en-US/blog/crash-course-in-blueprints-replication

https://docs.unrealengine.com/latest/INT/Gameplay/Networking/index.html

[vital belfry]

cool, thanks

[wary willow]

http://cedric-neukirchen.net/2017/02/14/multiplayer-network-compendium/

Look at pinned msgs also

[vital belfry]

i'm actually reading that cedric one now

[wary willow]

Yeah, if you are a newb

Might not make the most sense

But it's still pretty clear cut

[vital belfry]

i watched a video series a couple weeks ago, that shed a lot of light on how networking is handled in UE

i'm more interested in coding approach over blueprints, though

[wary willow]

@vital belfry ?

Cedric has c++ example

so does ShooterGame

and pinned messages

and finally, https://www.udemy.com/unrealmultiplayer

[vital belfry]

word. much appreciated

[plain flume]

hello! If Authority multicasts to clients. Does it matter how much stuff there is after the multicasting? Or will it take the same amount of network data and only the "I will now multicast call" is that matter?

[wary willow]

@plain flume ?

It doesn't matter

But, the more stuff you have, the more bandwidth it will take

[jolly siren]

Function name and parameters are what determines network usage for an rpc

[wary willow]

@jolly siren You're saying that the logic past the RPC call won't affect bandwidth?

[jolly siren]

the logic in the RPC is performed locally

so no, it won't affect bandwidth directly

[wary willow]

I'm looking at it differently. As in, it's better to have a lot of logic in the multicast, than calling several multicast events separately

But I get you

[jolly siren]

right, you always want to limit the number when possible

[inner iris]

@jolly siren any idea of the bandwidth cost difference of a multicast RPC with no inputs vs a repnotify variable- both trigger events on other clients, but it seems from what I've read that calling a multicast is more expensive than a repnotify call.

[wary willow]

<@&213101288538374145> ^^ spam

Oh it's gone

[jolly siren]

🦄

[thin stratus]

@jolly siren I need to annoy you a bit more. I'm sorry :D

[plain flume]

Aah. So If I have a thousand line if code behind the multicast without no params, it is safe to call without traffic overflow.

[thin stratus]

So the Server is running now and after a small engine change also showing up on the Steam Server Browser

[jolly siren]

no problem cedric

[thin stratus]

https://puu.sh/xJxgW/db895cffc2.png

However there is like 3 things weird about it.
First the Name is the ID. Can I easily override that?

Second, game shows up as "Unreal Test!" instead of "Protoball"

[jolly siren]

third, player count?

[thin stratus]

and third, I can't find the session in my game itself.
However log prints it:

[2017.09.26-19.15.37:911][195]LogBlueprintUserMessages: [BP_GameInstance_C_0] [GameInstance] Switch from State MainMenu to State ServerList.
[2017.09.26-19.15.37:916][195]LogBlueprintUserMessages: [W_ServerList_C_0] SEARCHING
[2017.09.26-19.15.38:547][225]LogOnline: Warning: STEAM: Server response IP:35.159.19.217
[2017.09.26-19.15.38:547][225]LogNetVersion: Protoball 1.0.0.1, NetCL: 0, EngineNetVer: 2, GameNetVer: 0 (Checksum: 1438384760)
[2017.09.26-19.15.38:697][234]LogOnline: Warning: STEAM: Rules response OWNINGID 90111257544536065
[2017.09.26-19.15.38:697][234]LogOnline: Warning: STEAM: Rules response P2PADDR 90111257544536065
[2017.09.26-19.15.38:697][234]LogOnline: Warning: STEAM: Rules response P2PPORT 7777
[2017.09.26-19.15.38:697][234]LogOnline: Warning: STEAM: Rules response SESSIONFLAGS 523
[2017.09.26-19.15.38:697][234]LogOnline: Warning: STEAM: Rules refresh complete
[2017.09.26-19.15.38:712][234]LogBlueprintUserMessages: [W_ServerList_C_0] SUCCESS
[2017.09.26-19.15.38:712][234]LogBlueprintUserMessages: [W_ServerList_C_0] 0

[jolly siren]

what are you using for "Steam Server Browser" ?

[thin stratus]

That's just the Server thing of steam itself

[jolly siren]

it's a steam app? I've never seen that before

[thin stratus]

It's been in steam since ever

Just no one uses it

https://puu.sh/xJxte/19eb4674e9.gif

[jolly siren]

ahhh, thanks that is useful

so you are using RegisterServer now?

[thin stratus]

Yeah

Currently without any extra settings

Oh wow

It's hardcoded

Of course it is

[jolly siren]

I know that Scienziatogm's had to extend the source to set the server name

https://wiki.unrealengine.com/Using_Steamworks_with_UE4

[thin stratus]

https://puu.sh/xJxAX/3edc9fd930.png

[jolly siren]

the last section

[thin stratus]

Whyyyyyyyyy

Yeah that's totalyl fine

We have an engine build anyway

[jolly siren]

I've never displayed the description, so I haven't seen that "Unreal Test!" before haha

the player count is bugged for dedicated servers too

always displays 0

in unreal at least, idk about that server browser

[thin stratus]

Sessions->GameServerName = FString("My Server!");

I don't really see how that part of the wiki is helpful

[jolly siren]

yeah that

lol

[thin stratus]

That doesn't exist

xD

[jolly siren]

Right, he added it to the engine

you will have to look at his PR

[thin stratus]

Ah right

Let me check

[jolly siren]

which is ugly, but hopefully that part isn't

and for 3, how are you searching for the server in game?

[thin stratus]

Find Session Node (my own) with Presence and Lan off

[jolly siren]

okay yeah you will want those off

[thin stratus]

Yeah, i will perform the engine changes and then check back

[jolly siren]

okay cool

[obsidian kelp]

is there a guide for setting up your own online subsystem?

[thin stratus]

Depends on what you mean

You will have to follow the Subsystem Interfaces

Means your best bet is to look at already implemented subsystems

[tacit hazel]

for some reason when I tpye "open myip" into the console it just restarts the game

instead of connecting to the dedicated sevrer, and I have port forwarding enabled

[stark dome]

What does it say in output

Or in your logs

[tacit hazel]

no output

here are the logs:

https://hastebin.com/ucunabuwim.md

@stark dome

[stark dome]

Looks like you don't have the dedicated server running or you aren't connecting to the right ip

Could be abunch of issues

[tacit hazel]

im forwarding my port, adn connecting to my public ip

it works when I just use 127.0.0.1

and the dedicated server is running

[hasty adder]

Is the computer your connecting to on your own network?

[tacit hazel]

its the same computer

just two.exe's open and the sevrer

@hasty adder

[hasty adder]

You trying to use your internet ip

?

[tacit hazel]

yes, my public ip

[hasty adder]

Ever try calling your own phone number? 😃

[tacit hazel]

it can't use the same port then I assume?

[hasty adder]

Sorta I forget the logistics of it but you usually can't connect to your own network from outside ip

If your port is showing as OK with somethings like canyouseeme.org it should be working

[tacit hazel]

would it wokr if I did it on another pc within the same network?

[hasty adder]

Well when I tested dedicated servers I had to use separate networks like public wifi connection

In the states my internet provider has some

Xfinity for example dunno if your located in a area that has something similar

[tacit hazel]

that webstie cant see me

I think I may have done something wrong with prot forwarding, i've never done it before

[hasty adder]

Looks ok

I dunno if unreal actually responds to canyouseeme.org.. Actually I recall not always seeing it. But can you connect to it with your local ip of 192.168 etc?

From another Comp on same network t should work

Because then it's only your local conouter firewall that would stop it

[tacit hazel]

if I use my public ip on another computer within the network it should work?

[hasty adder]

No local ip public your still going out on the same ip and connecting to yourself

But the 192.x would work from a ther since its lan

That would determine if local firewall in Windows is preventing it

Once you know that works then outside should be ok into it with the forwarding

[tacit hazel]

ok

it does nothihng when I do 129.168.1.1, or 192.168.1.171

and I tried my public ip

and the loop back 127.0.0.1

[hasty adder]

Separate computers?

1.1 is your router so that shouldn't work

[tacit hazel]

yes 2 computers

[hasty adder]

Ok on the server computer. Turn off your computer firewall and try again

[tacit hazel]

192.168.1.171 is the local ip of the servers computer

how?

[hasty adder]

Then we'll know if it's a local inbound outbound rule stoppin it.

Just type in firewall in the search

[tacit hazel]

ok windows firewall is off brb

ok its working now

[hasty adder]

Ok so we need to open the ports on the local firewall to allow traffic. Windows 7?

[tacit hazel]

windows 8.1

[hasty adder]

https://technet.microsoft.com/en-us/library/ms345310(v=sql.100).aspx

I'm not familiar with 8.1 that looks right tho

Then when you have the rule for the ports turn it back on and try again

[tacit hazel]

done, adn it works

[hasty adder]

So it should work from a computer outside your network now that the port is open. Wonder if can you see me works bow

Now LOL sorry big thumbs on this phone 😃

[tacit hazel]

lmfao saaaame all the damn time

what did you mean to say?

[hasty adder]

On server comp does cantouseeme.org work for the port?

I still dunno if it normally would but I'm curious

[tacit hazel]

unfoortunatly no

[hasty adder]

You'll need someone to download client to test then 😦

[tacit hazel]

now I just allowed the app through the firewall

because that guide is dated I believe

[hasty adder]

Probably lol

[tacit hazel]

I couldnt ifnd a way to actually open the port

[hasty adder]

If you want to pm me your ip I can try to connect with unreal you'd see it try to connect in the log if you ran the server with -log and disconnect me since its not your game

[tacit hazel]

sent it to uou

[neon mango]

Any good guides to help undestand p.NetShowCorrections 1 ?

[twin juniper]

What do you not understand? It's a console command that makes it so you can see if a network correction was received

by a client

[neon mango]

So its bad if you see any and realy bad if you see red ones I take it?

[twin juniper]

Mhmm

Well lol

Are you running the command on the client or on the server

[neon mango]

I run it on the server, didn't know it worked for client? Does it do something different for client?

[twin juniper]

You can run it on the client.

[neon mango]

are the colors basically inverted? So red is server and green is client ?

[tacit hazel]

thank you so much @hasty adder

[hasty adder]

Np

[twin juniper]

No, was just thinking about a one-case scenario. If you are getting desyncs they are bad.

[neon mango]

What would client prediction look like? Would you get a red desync followed by a green? Would that be normal?

I'm just trying to understand if Desync is going to happen no matter what with lets say a ping of 500 a PktLoss of 15 ?

In which case you'd expect red to show but then if Prediction is working green to follow after?

Or if prediction is working you wouldn't see any red at all?

[twin juniper]

Are you using BP or c++?

My answer is gonna change depending on which one you use

[neon mango]

C++ @twin juniper

[twin juniper]

What kind of project are you working on? FPS, moba, or what?

I asked for a couple of reasons because client side prediction solutions look differently depending on the type of game. As far as your question about desync is gonna happen, no matter what if you have players with 500 ping. First off you shouldn't have people with over 500 ping in the first place, but if you did they are going to desync. And that command wouldn't have green follow up if you have that prediction kicking in as you are talking about.

That's not really how most client side prediction is going to work

[neon mango]

@twin juniper FPS

the 500 ping is for testing

to see how smooth my movement is with it

[worn nymph]

You won't get smooth movement with a ping of 500 the built in replication system and networking of the character movement component can at most comfortably handle the range of 150-200 which is the average bad ping of most games . After that the only solutions are to roll your own custom solution or use the gameplay ability plugin which is more optimised and tackles prediction in a different way . If your game runs good at the 150-200 mark you shouldn't really be worrying about the extremes of players because it will be a minor percentage that it effects and no matter what you do they will not have a good play experience .

Shooter game and unreal tournament uses the first method . Overriding the saved moves functionality in character movement component but for games like fortnight and paragon epic realised it wasn't fitting for the demands of the game so they created the gameplay ability system

[thin stratus]

Sooo, I did manage to get the Server show up on the Steam Browser. With correct Name and Game.
As well as being able to join via IP again.

However, my FindSession Node doesn't return him visibly.
It shows up in the Log Files, but the Results are empty

[2017.09.27-12.05.57:518][172]LogBlueprintUserMessages: [W_ServerList_C_0] SEARCHING
[2017.09.27-12.05.57:537][174]LogOnline: Verbose: STEAM:  "gamedir" "unrealtest" 
[2017.09.27-12.05.58:037][204]LogOnline: Warning: STEAM: Server response IP:35.159.19.216
[2017.09.27-12.05.58:037][204]LogOnline: VeryVerbose: OSS: GetBuildUniqueId: Network CL 0 LocalNetworkVersion 1438384760 bUseBuildIdOverride 0 BuildIdOverride 0 BuildId 2101066868
[2017.09.27-12.05.58:038][204]LogOnline: Verbose: STEAM: Server query complete '0' eServerResponded (Server success)
[2017.09.27-12.05.58:137][210]LogOnline: Warning: STEAM: Rules response OWNINGID 90111265270483971
[2017.09.27-12.05.58:137][210]LogOnline: Warning: STEAM: Rules response P2PADDR 90111265270483971
[2017.09.27-12.05.58:137][210]LogOnline: Warning: STEAM: Rules response P2PPORT 7777
[2017.09.27-12.05.58:137][210]LogOnline: Warning: STEAM: Rules response SESSIONFLAGS 523
[2017.09.27-12.05.58:137][210]LogOnline: Warning: STEAM: Rules refresh complete
[2017.09.27-12.05.58:137][210]LogOnline: Verbose: Async task 'FOnlineAsyncTaskSteamFindServers bWasSuccessful: 1 Results: 0' succeeded in 0.605693 seconds
[2017.09.27-12.05.58:137][210]LogBlueprintUserMessages: [W_ServerList_C_0] SUCCESS
[2017.09.27-12.05.58:137][210]LogBlueprintUserMessages: [W_ServerList_C_0] 0

Does that have something to do with the gamedir?

[jolly siren]

                HostSettings = MakeShareable(new FOnlineSessionSettings());
                HostSettings->Set(SETTING_GAMEMODE, FString(*GameMode->GetName()), EOnlineDataAdvertisementType::ViaOnlineService);
                HostSettings->Set(SETTING_MAPNAME, GetWorld()->GetMapName(), EOnlineDataAdvertisementType::ViaOnlineService);

                HostSettings->bUsesPresence = false;
                HostSettings->bIsLANMatch = false;
                HostSettings->bIsDedicated = true;
                HostSettings->bShouldAdvertise = true;
                HostSettings->bAllowJoinInProgress = true;
                HostSettings->NumPublicConnections = MaxPlayers;
                Sessions->CreateSession(0, GameSessionName, *HostSettings);```

some of these settings are probably required

such as bShouldAdvertise

[thin stratus]

I got these

I went ahead and updated my Steamworks

and the GameDir etc

Let's see if that helps

I also wonder where Epic passes the Server Version

https://puu.sh/xK7uA/4cf267e04f.png

@jolly siren I wonder, the extra settings, such as GAMEMODe and MAPNAME. Aren't they also overflowing?

I set the OwnerName to empty, so it doesn't overflow

Or is that a different string

[jolly siren]

ahh yeah I think I get overflow warnings on startup. It doesn't hurt anything tho

[thin stratus]

If I get the warnings, the Server doesn't start up

aka I can't find it at all

Hm

[2017.09.27-13.01.16:028][558]LogOnline: Verbose: STEAM: Server query complete '2' eNoServersListedOnMasterServer (No servers match)

Well great

xD no it doesn't work anymore

Updated the GameDir. Guess the Server is not using it?

Think I hit a dead end

Changing the GameDir should not result in no servers match

It's the same in ue4 and steamworks page :/

[jolly siren]

Might need to summon Moss

[thin stratus]

sigh I hate annoying people

[rough iron]

xD

[thin stratus]

:/ Did you encounter this result?

[rough iron]

I would go to your previous step where you got atleast a response

and set a breakpoint

[thin stratus]

Yeah, might just do that, but I kinda need to use Steams Product Name

Fun fact. No one seems to EVER encoutner that

Couldn't find a single google result

Why me

[rough iron]

xD do you have UDN access?

[thin stratus]

UnrealDevNetwork?

Na, no custom license here

[rough iron]

there might be some threads regarding your issue

[thin stratus]

Well great. Hide it behind a "paywall"

[rough iron]

xD

[thin stratus]

As a freelancer, how would I ever get access to that

[rough iron]

Let me check and I'll just give you the hints ^^

you are using the GameServer AP

[thin stratus]

Don't tell me there is an NDA that stops you from saying what a fix to an existing problem is

[rough iron]

right?

nop xD I can not give you a copy&paste answer

but I can give you the right lead

[thin stratus]

I am using Epics default stuff.
I added the PR from this one guy for Authentication (but even without it wasn't working, so no change here).

I changed 2 things: OWNINGUSERNAME (or what it's called) to an empty text, so it doesn't overflow

And the GAMEDIR and PRODUCTNAME

to match the ones in my Steamworks

RegsiterServer creates a Session with Presence and LAN off

[rough iron]

You can use two systems: lobbies or the older GameServer API

[thin stratus]

That's kinda all I do

GameServer API it is then

[thin stratus]

I filled that in

[rough iron]

this is what you got in your steam API

then in code you need:

[thin stratus]

https://puu.sh/xK99c/1cedec2356.png

[rough iron]

#define STEAMPRODUCTNAME "<productNameHere>"
 #define STEAMGAMEDIR "<gameDir>"
 #define STEAMGAMEDESC "<description>"

and in your configs

[OnlineSubsystemSteam]
 GameVersion=1.0.0.0

and when searchig ensure you set the bIsPresnece to trye

*true

[thin stratus]

When searching to true?

I'm creating it with false

[rough iron]

GameSession->FindSessions(PlayerOwner->GetPreferredUniqueNetId(), GameSessionName, bFindLAN, bFindLAN ? false : true);

if you are not searching for a lan game set the presence to true

[thin stratus]

Okay well I can try that. I'm creating it like this:

void APBGameSession_Base::RegisterServer()
{
    Super::RegisterServer();

    IOnlineSubsystem* const OnlineSub = IOnlineSubsystem::Get();
    if (OnlineSub)
    {
        IOnlineSessionPtr Sessions = OnlineSub->GetSessionInterface();
        if (Sessions.IsValid())
        {

            MaxPlayers = 10;

            ServerSettings = MakeShareable(new FOnlineSessionSettings());
            ServerSettings->bUsesPresence = false;
            ServerSettings->bIsLANMatch = false;
            ServerSettings->bIsDedicated = true;
            ServerSettings->bShouldAdvertise = true;
            ServerSettings->bAllowJoinInProgress = true;
            ServerSettings->NumPublicConnections = MaxPlayers;

            OnCreateSessionCompleteDelegateHandle = Sessions->AddOnCreateSessionCompleteDelegate_Handle(OnCreateSessionCompleteDelegate);

            Sessions->GameServerName = ServerName != "" ? ServerName : "No ServerName specified.";
            Sessions->CreateSession(0, GameSessionName, *ServerSettings);
        }
    }
}

[rough iron]

bUsesPresence might be set to true

[thin stratus]

I remember that if I do this, it crashes.

[rough iron]

use the same I have in the dinf

mhh

[thin stratus]

As Dedicated Server don't usually use presence

[rough iron]

odd

[thin stratus]

Are you sure your DediServers register with Presence true?

[rough iron]

a guy from UDN is xD

and those steps are what worked for him ^^

[thin stratus]

Well, okay, will try that. Worth a shot

[rough iron]

xD

[thin stratus]

(: thanks

I really need to write down all steps so no one has to go through that shit every time

Though the PR is kinda annoying

[rich apex]

Hello, is it possible to use unreal replay system to implement a lag compensation for shooting ?

I'm struggling to understand how I can simulate the state of the client in the server (when a shot happens)

[wary willow]

@thin stratus aye. Write it down. Add it to compo

[rough iron]

@thin stratus did it work?

[wary willow]

@rough iron review my book lol

[rough iron]

your book?

[wary willow]

Aye. Are you still a tech reviewer for UE4 for Packt?

[rough iron]

Lately not xD no time

xD

[wary willow]

Bah

[rough iron]

^^ to many projects plus a lil devil xD

[wary willow]

Need someone smart and who will be honest and not just pass it

Anyway, this Steam Dedicated thing needs a wiki

[rough iron]

yep

[thin stratus]

Had to drive to the store

Gonna test changes in a few

Idk how wrong "GameVersions" show themselves

But I did have different version in Config and Steamworks

Let's see if that also adds to the fix

[rough iron]

ok

[thin stratus]

Okay, let's see if my Server crashs or not :D

Yus

Error: === Critical error: ===
[2017.09.27-14.59.29:504][ 13]LogWindows: Error: 
[2017.09.27-14.59.29:504][ 13]LogWindows: Error: Assertion failed: SteamUtilsPtr

Presence for Dedicated Server is nono

[rough iron]

mhhh

[hasty adder]

Dejavu a year ago on answer hub

Hey again,

I got a reply from a engineer and they said a couple things. I am not sure if they are related specifically to what you are experiencing but I wanted to share just in case:

For your crash, it's because you have bUsesPresence set to true. FOnlineSessionSteam::CreateSession checks that value to decide whether to create a lobby session or a server session. If you set it to false, it should do the right thing hopefully.
It could also be a firewall setting preventing incoming connections. Make sure that you have port 7777 (Unreal default for listen servers) open.

Thanks for your patience.

That was a thread back on 4.13

[thin stratus]

Yeah I found that out back when I tried to solve the PR persons problems

Like 2 years ago or so

I'm at a loss here

2017.09.27-15.29.19:706][289]LogBlueprintUserMessages: [W_ServerList_C_0] SEARCHING
[2017.09.27-15.29.19:725][291]LogOnline: Verbose: STEAM:  "gamedir" "XXXXXXXX" 
[2017.09.27-15.29.20:150][316]LogOnline: Warning: STEAM: Server response IP:35.159.19.216
[2017.09.27-15.29.20:150][316]LogOnline: VeryVerbose: OSS: GetBuildUniqueId: Network CL 0 LocalNetworkVersion 1438384760 bUseBuildIdOverride 0 BuildIdOverride 0 BuildId 2101066868
[2017.09.27-15.29.20:150][316]LogOnline: Verbose: STEAM: Server query complete '0' eServerResponded (Server success)
[2017.09.27-15.29.20:250][322]LogOnline: Warning: STEAM: Rules response OWNINGID 90111267517006857
[2017.09.27-15.29.20:250][322]LogOnline: Warning: STEAM: Rules response P2PADDR 90111267517006857
[2017.09.27-15.29.20:250][322]LogOnline: Warning: STEAM: Rules response P2PPORT 7777
[2017.09.27-15.29.20:250][322]LogOnline: Warning: STEAM: Rules response SESSIONFLAGS 523
[2017.09.27-15.29.20:250][322]LogOnline: Warning: STEAM: Rules refresh complete
[2017.09.27-15.29.20:250][322]LogOnline: Verbose: Async task 'FOnlineAsyncTaskSteamFindServers bWasSuccessful: 1 Results: 0' succeeded in 0.543482 seconds
[2017.09.27-15.29.20:256][322]LogBlueprintUserMessages: [W_ServerList_C_0] SUCCESS
[2017.09.27-15.29.20:256][322]LogBlueprintUserMessages: [W_ServerList_C_0] 0

Guess it's time to throw in breakpoints

Somewhere between the Verbose log of "Server Query Complete" and "Async Task" it throws away the obviously found server

[thin stratus]

Still haven't found the best breakpoint.
I can see all the Servers information, Players, Name, IP, Port etc, but somewhere it gets kicked out

Uff, I assume I know the issue

KeysFound == STEAMKEY_NUMREQUIREDSERVERKEYS

It finds 2 Keys. It wants 3

I set the OwningUserName to ""

Guess empty isn't counted.

[hasty adder]

Does that just mean true it was able to run the task and yielded no results?

[thin stratus]

Well it finds the Server and prints it into the Logs

Then, when getting the stuff from the session options, it wants 3 things

if (FCStringAnsi::Stricmp(TCHAR_TO_ANSI(*It.Key()), STEAMKEY_SESSIONFLAGS) == 0)

else if (FCStringAnsi::Stricmp(TCHAR_TO_ANSI(*It.Key()), STEAMKEY_OWNINGUSERID) == 0)

else if (FCStringAnsi::Stricmp(TCHAR_TO_ANSI(*It.Key()), STEAMKEY_OWNINGUSERNAME) == 0)

// Verify success with all required keys found
    if (bSuccess && KeysFound == STEAMKEY_NUMREQUIREDSERVERKEYS && (SteamAddrKeysFound == 2 || HostKeysFound == 2))
    {
        SessionInfo->HostAddr = RemoteHostAddr;

        if (HostKeysFound == 2)
        {
            SessionInfo->HostAddr = RemoteHostAddr;
        }

        if (SteamAddrKeysFound == 2)
        {
            SessionInfo->SteamP2PAddr = SteamP2PAddr;
        }

        Session->SessionInfo = SessionInfo;
        return true;
    }

    return false;

bSuccess is true. KeysFound was 2, as I set OwningUserName to empty

So it returns false

[hasty adder]

P2p

[thin stratus]

Back when I saw the fix for "Overflow" on the tags, I didn't get why people set it to "bob" etc

(the name)

So I set it to empty. Guess I shot my own leg

But let's see first if that solves it

[hasty adder]

Haha yeah

[thin stratus]

However testing the value on being empty when the key is there is kinda stupid

But Steam I guess...

[thin stratus]

It works now I guess

It returns 1 result

[thin stratus]

Does someone know what SETTINGS are already existing?

Like "Only Empty" etc?

Can't find that atm

Found them in OnlineSessionSettings

/** Search only for dedicated servers (value is true/false) */
#define SEARCH_DEDICATED_ONLY FName(TEXT("DEDICATEDONLY"))
/** Search for empty servers only (value is true/false) */
#define SEARCH_EMPTY_SERVERS_ONLY FName(TEXT("EMPTYONLY"))
/** Search for non empty servers only (value is true/false) */
#define SEARCH_NONEMPTY_SERVERS_ONLY FName(TEXT("NONEMPTYONLY"))
/** Search for secure servers only (value is true/false) */
#define SEARCH_SECURE_SERVERS_ONLY FName(TEXT("SECUREONLY"))
/** Search for presence sessions only (value is true/false) */
#define SEARCH_PRESENCE FName(TEXT("PRESENCESEARCH"))
/** Search for a match with min player availability (value is int) */
#define SEARCH_MINSLOTSAVAILABLE FName(TEXT("MINSLOTSAVAILABLE"))```

[neon mango]

Does anyone know what client movement smoothing should like when debugging with p.NetShowCorrections 1

for like 500 ms

[jolly siren]

https://issues.unrealengine.com/issue/UE-44432

they fixed it 🍰

[glad sedge]

Ever realise something is broken in your game you just don't know how long it's been broken for?

[thin stratus]

I generally think the game is broken

since the start

[jolly siren]

lol

[thin stratus]

So, 4.20 coming nearer

[warm pagoda]

🤔 I think I see what you did there...

[glad sedge]

So I've got a question and I think I've fucked up here

        // Send to Server
        Server_GeneralActionPressed();
    }
        GeneralActionPressed();```

Is running inputs and their subsequent actions on the server and then deciding what to send to the client (i.e. HUD updates etc) a dumb way to approach multi

or should I run it like if (Role < ROLE_Authority) { // Send to Server Server_GeneralActionPressed(); }else{ GeneralActionPressed(); }

[rough iron]

@jolly siren there is a work around if you need it ASAP, it do needs some engine changes

I'll just post it xD

Add virtual void ResetRemoteVoiceBuffer() {} to IVoiceEngine.

Implement it as follows for steam for example:

void FVoiceEngineSteam::ResetRemoteVoiceBuffer() override
{
    for (FRemoteTalkerData::TIterator It(RemoteTalkerBuffers); It; ++It)
    {
        FRemoteTalkerDataSteam& RemoteData = It.Value();
        if (RemoteData.AudioComponent)
        {
            RemoteData.AudioComponent->Stop();
            RemoteData.AudioComponent = NULL;
        }

        It.RemoveCurrent();
    }
}

Call it where you need to, for example after a seamless travel in AGameModeBase::PostSeamlessTravel():

FOnlineSubsystemModule& SubsystemModule = FModuleManager.Get().GetModuleChecked<FOnlineSubsystemModule>("OnlineSubstem");
if (IOnlineSubsystem* Subsystem = SubsystemModule.GetOnlineSubsystem())
{
    IOnlineVoicePtr Voice = Subsystem->GetVoiceInterface();
    if (Voice.IsValid())
    {
        Voice->ResetRemoteVoiceBuffer();
    }
}

You could add it into the engine PostSeamlessTravel() if you like or to your own. Or even after a hard travel xD

[jolly siren]

Moss you are the man, seriously

Thank you so much!

[junior tree]

Hi, I am experimenting with my own character class with prediction and stuff for a multiplayer games; I have to set a fixed number of updates per second.
How many should I have, realistically?

[inner iris]

@junior tree Depends on how many players in your game, how much bandwidth is available and if more or less than a certain amount actually has a visual difference. I don't think there's any magic number with update rates.

[junior tree]

10 players per match, fps game

I just need to set that so that I experiment on realistic values

[inner iris]

As far as I can tell, UE4 dynamically raises and lowers the update rates depending on what is happening, so keep it at default

[junior tree]

if I go with 200 updates per second and make code for prediction and stuff for that then the game will realistically update 10 times per second I'll have worked for nothing 😦

I am updating via events in this test environment, I decide how often I update. I can easily just set to the realistic minimum and go with it

[inner iris]

I'd say the dynamic update rates are configurable and probably more to do with distant / less relevant actors. Someone more knowledgeable might be able to help you there

[jolly siren]

yeah ue4 has adaptive net update, see net.UseAdaptiveNetUpdateFrequency

[junior tree]

but from your experience, would it be fair to test with 30 updates per second in a simple, small map fps game?

[inner iris]

Does 30 work fine, do you notice lag or issues? Yes / No? Increase/ Decrease from there

It's really hard to say otherwise

Probably best to find the sweet spot for most things anyway by testing like this

then you won't have overkill values that are wasting bandwidth

[jolly siren]

@rough iron are you familiar with this bug? https://issues.unrealengine.com/issue/UE-45681 When I upgraded to 4.16 I started getting weird network spikes while testing in editor (and not simulating lag). So I set net.UseAdaptiveNetUpdateFrequency=0 in my DefaultEngine.ini. I'm not sure if that is the correct workaround or not.

[junior tree]

I hear you, but I would also like some cases to take as reference before start, for instance the player average for update rate in popular fps games like Overwatch, paladins, counter strike

[inner iris]

@junior tree Have a look at this channel: https://www.youtube.com/user/xFPxAUTh0r1ty

He covers lots of info like that on popular games

[junior tree]

Thanks!

This is gold!

[jolly siren]

that is cool, haven't seen that before

[rough iron]

@jolly siren no idea xD would have to look. Setting the frequency to 0 does work, while it's a bit rough xD

@thin stratus ^^ it should work atleast xD

[jolly siren]

yeah, I didn't want to cause other issues

[rough iron]

just perf issues

if it's a temporal work around than ok xD

[jolly siren]

until they fix the bug? yeah I guess. Although they backlogged it, and it doesn't have a target version.

[rough iron]

until you can debug it xD

[jolly siren]

ahh yeah this seems like a pretty big issue. I wish they would put a quick note on the issue saying why it was backlogged or something

[rough iron]

I guess for games that need quick responses using UseAdaptiveNetUpdateFrequency by default would be a bad idea

while for game where you do not need to update every frame it's good

[jolly siren]

okay, I see. In my case it's a first person shooter.

[rough iron]

So I guess you are not that adaptive

I would have to check the code but I guess it trains your your needs over time to adapt to it. While this is ok in most cases it is not when you game needs fast response all the time

[eternal anchor]

it's enabled by default

shouldn't it actallly reduce updates ?

[rough iron]

for me it shouldn't be enabled by default xD

while it should be mentioned in the net documentation as an optimization step

[eternal anchor]

what are you doing then ?

in in fast paced shooter with good prediction it should benefit to have low update rate on server

(33-66ms)

[rough iron]

The thing is the preduction xD I would set a lower update rate when you are near players while making it higher when you are not

but that's per player which is a pain xD

by low I mean a small t between updates xD

high is a high t xD so we do not get into confusion here

so if the trained data decided to set you update high but you need it instantly sometimes it's a pain

[jolly siren]

That is really helpful, thank you Moss 😃

[thin stratus]

I got 2 Meshs, one with OwnerNoSee and one with OwnerOnlySee.
I got a Specator that just gets all Characters and iterates through their third person cameras for viewtarget

That works but for what ever reason, as soon as the viewtarget is set to one of hte characters, both meshs are hidden for hte speactator

Does setting ViewTarget trigger OwnerNoSee and that stuff?

[thin stratus]

No idea why this happens

Well forced it client sight on the spectator to be owner no see = false

Guess I'm the owner when viewing the target gg

[inner iris]

Any reason why a delay node in the Gamemode causes only one client to call out the logic after, even with the delay set to 0, but removing the node calls the logic from all clients as expected?

[rare cloud]

@inner iris , game mode only exist on server or authority client

[inner iris]

Right but does that mean delay can't be used?

It works completely as intended without the delay node in the chain, but with it, it only fires off on one client

[thin stratus]

Well where is the delay

[inner iris]

It's part of the respawn logic

[thin stratus]

Hm

[inner iris]

I can grab a screenshot one sec

[brittle sinew]

If you're using a delay in a loop, that's the problem 😃

The delay node isn't instanced—each time you call it, for example in a loop, resets the same node

[inner iris]

Oh that might be it @brittle sinew

The server is spawning characters for the controller array at the start of the match

Will try to confirm now, thanks!

[thin stratus]

Just try a Timer

It's basically one and the same delay I guess

as it's only one GameMode

But it should be reset when the next calls comes in

Given you don't call that function in < 0.2 seconds

[inner iris]

Ok I'll try that, thanks

I just need to offset the init character function so the UI can update correctly

[jolly siren]

Delays scare me 👻

[inner iris]

Thanks @brittle sinew @thin stratus

[thin stratus]

@jolly siren Eeehm, why can't I host 2 Servers on one PC?

With Steam :/

[hasty adder]

@thin stratus your spectator blend with is causing them both to go nosee?

[thin stratus]

Yop

[hasty adder]

Weird. You blending with the characters main camera?

[thin stratus]

Na, second one

But it's active

I fixed it by setting OwnerNoSee to false on the local spectator for that mesh

[junior tree]

anyone had any luck with charactermovement and jitter? I am testing replication and prediction on UE4's base character, and even at high latencies it seems fine, but when I add jitter (or play with a friend with jitter) the character blinks quite a bit!

[hasty adder]

Ah good to know never tried the built in spec class to see what it's doing. 😄

[thin stratus]

@jolly siren Hm nvm, had to increase ports and query ports by hand

[inner iris]

Definitely not the most elegant solution- it works fine, just checking to make sure it isn't insane to call 2 for loops in a row like this, since it's only happening once on begin play

The delay is just to avoid the UI popping in / Camera resetting / Weapon spawning etc

When player possesses, the character is ready to go and the transition is much smoother

[loud mountain]

@inner iris u could also overwrite the default game mode functions here: http://img.gpu.yt/59cd37e67b41c.png

[inner iris]

@loud mountain Oh Interesting! I'm using some simple actors as spawn points and not actual playerstarts- are there any big benefits to using them?

[loud mountain]

You could use a custom player start class by creating your own and assign teams via variables or just use actor tags

[inner iris]

I have the teams setup with the current actor ones, and a single playerstart just for the initial spectator position before being assigned a spawn point

[jolly siren]

@thin stratus sorry was afk, glad you got it working. yeah you need to specify the ports via cmd when you start the server

[thin stratus]

Weirdly enough

It has a different port at start

And then changes it when registering to steam

FString CustomServerName = ServerName + FString(" #") + FString::FromInt(GetWorld()->URL.Port - 7777 + 1);

Kills this idea

[loud mountain]

U don't really have to use a PlayerStart class for them to spawn, the "find player start" function returns a class of actor
so u could theoretically use ur current class

[inner iris]

@loud mountain I think I'm doing something similar with that function

[jolly siren]

ah you wanted the port in the name

@thin stratus what port does it start with?

[inner iris]

@loud mountain Will have a look at what the Find Player Start function does to compare, thanks 😃

[thin stratus]

@jolly siren Kinda random

I specified 7777 to 7786

And one or two started with 7789 and such

Guess getting the Port before starting the Server RegisterServer stuff is wrong

I pass it now via commandline

(the server number it is)

[jolly siren]

yeah you could just grab it from the commandline or set the name while registering i guess

have you fixed the number of players (NumPublicConnections/NumOpenPublicConnections) bug in your engine copy?

[thin stratus]

I think so

Idk

xD

[jolly siren]

https://issues.unrealengine.com/issue/UE-45381

this guy

always returns 0 for steam dedicated

[thin stratus]

Will test in a sec

[jolly siren]

okay, cool

[rough iron]

are you having that bug?

check if FOnlineAsyncTaskSteamFindServerBase::ParseSearchResult is getting hit

if not you are using lobbies (if I recall correctly xD)

if it's lobbies put a breakpoint in OnlineSessionAsyncLobbySteam.cpp => FillSessionFromLobbyData

I would check those two places xD

[jolly siren]

yeah, I've had this bug for a long time, since like 4.6

[rough iron]

it's where you actually fill the data in that comes from steam

[jolly siren]

I'm not using lobbies yet. Let me check that

this is how I'm filling the session data that is shown in the ui

// Create a new session data struct
FFPSGameSessionData Data;
const FOnlineSessionSearchResult& SearchResult = SessionSearch->SearchResults[SearchIdx];
Data.SessionName = *(SearchResult.Session.OwningUserName);
Data.PingInMs = SearchResult.PingInMs;
Data.MaxPlayers = SearchResult.Session.SessionSettings.NumPublicConnections;
Data.CurrentPlayers = Data.MaxPlayers - SearchResult.Session.NumOpenPublicConnections;
Data.SearchResultsIndex = SearchIdx;

// Get the game type
SearchResult.Session.SessionSettings.Get(SETTING_GAMEMODE, Data.GameType);
// Get the map name
SearchResult.Session.SessionSettings.Get(SETTING_MAPNAME, Data.MapName);```

and it always displays 0/10 players

so NumPublicConnections is working

but NumOpenPublicConnections isn't

yeah it's this https://answers.unrealengine.com/questions/96806/why-does-steam-session-info-always-report-incorrec.html

https://github.com/EpicGames/UnrealEngine/blob/f794321ffcad597c6232bc706304c0c9b4e154b2/Engine/Plugins/Online/OnlineSubsystemSteam/Source/Private/OnlineSessionAsyncServerSteam.cpp#L962

m_nPlayers always returns 0 here

I wonder if it's because I'm using app id 480

[rough iron]

you shouldn't rely on an ID that is not yours xD

[jolly siren]

haha yeah I know, I need to finally get my own

I'm guessing that is probably the issue

[rough iron]

if you send the correct data to steam you should get the correct ones returned in the search

[jolly siren]

so it should be working with 480 then?

[twin vault]

in a game with listen 1v1 quickmatch, should i decide the prefered host? is there any advantage if the player with better connection is hosting if the other one will lag anyway?

[wary willow]

@twin vault ??

Do you even know the basics of listen servers?

[twin vault]

wot

yeah, one host another join :v

[wary willow]

Cool

Do you get it now?

Maybe not. But also. Think about ping.

How ping actually works.

[twin vault]

exactly, if the one with bad internet pings the one with good internet, it will be the same vice versa

thats what i assumed anyway

[wary willow]

So did I misunderstand your question?

[jolly siren]

all internet is good internet

[wary willow]

Or you are good?

[jolly siren]

lol

[twin vault]

maybe, i asked "is there any advantage", meaning like whatever right

[wary willow]

Huh?

I don't think you get it then :(

[twin vault]

"no" is the answer

i guess...

[wary willow]

You asked about Listen Server 1v1

You said you knew what listen servers were

One hosts, one joins

You also understand what ping is

So, I guess I have a question for you.

How do you propose to switch hosts?

Even if there was an advantage (which there isn't)

[twin vault]

well, first it has to find whoever its gonna connect, not sure if im just gonna use the steam subsystem find session, then one hosts, and other connects

[wary willow]

The only advantage of a 1v1 mp game in regards to hosting would be a dedicated server.

[twin vault]

yep

[wary willow]

Something central to both

[twin vault]

just wanted to be sure c:

ty

[wary willow]

@twin vault wasnt trying to be snarky btw..m only maybe a tad... because I wanted you to work it out on your own ;)

[twin vault]

but it shows i wasnt clear enough on my question

[wary willow]

@twin vault hm?

[twin vault]

im actually thinking on stuff like packet loss, download is usually higher than upload, so i guess chances of the net dropping stuff like non reliable RPCs are bigger on bad internet than good ones

but im not sure how that works

thats why i asked if "there is any advantage", beyond lag

[wary willow]

@twin vault think about what you are saying again

[twin vault]

xd

[wary willow]

Listen Server logic

Calls made

Calls received

How would a change of host change the fact that the same amount of data has to go up and down

Sent and received

The internet isn't going to change for them

They still have the same up/down speed. And can't change the others

[twin vault]

not sure if my logic with download and upload makes sense but:

A can send 10 of data and can recieve 100
B can send 5 of data and can recieve 50
A is server, have to send 8 of data, A executes, B executes
B is server, have to send 8 of data, B executes, A wont execute

srs it makes sense for me lol

[wary willow]

Dude. Sorry. I am not going to try to make sense out of that

[twin vault]

sure, i will take your word for that for now

[wary willow]

Let me see if I can find you something

[twin vault]

till i learn by myself and agree

[wary willow]

I mean, the Multiplayer book I have is pretty solid

definitely high recommend

https://www.amazon.com/Multiplayer-Game-Programming-Architecting-Networked/dp/0134034309

@twin vault https://www.youtube.com/watch?v=4yzsVLhN4FQ

[twin vault]

just got the ebook

[wary willow]

https://gafferongames.com/

@twin vault the one I linked?

[twin vault]

ye

[wary willow]

Ah, it's a good read

[inner iris]

@wary willow my copy came yesterday!

Got a lot of learning to do before reading it though

[wary willow]

Haha

[gleaming vector]

hey, i have that book

its ok

[inner iris]

@gleaming vector any shortcomings to keep in mind before reading?

[wary willow]

@gleaming vector What, you didn't like it?

I thought it was pretty informative, espeically for someone who didn't get a CS degree

[gleaming vector]

It was alright, but it covered lower level things

Which is useful, but I've already done all those things

It's great if you've never done multiplayer before

[grand kestrel]

I was talking to @regal hazel elsewhere, had some desyncing with my game and I noticed UT don't replicate components (including CMC), everything that is replicated goes on ACharacter, I did the same and the desync went away, then I ran 10 clients and running around dodging, jumping, while firing a minigun (600RPM, rather inaccurate, had ~13FPS so missed a fair bit) that used a reliable server RPC every time it did damage. Simulating 150ms latency. This is what the profiler looks like:
https://i.imgur.com/IL0NafP.png
https://i.imgur.com/6zUrrFv.png

Interested to hear what others think about this

[regal hazel]

I guess is my general question is there a reason to avoid using replicated components?

I know they come with some small overhead but they shouldn't be causing any desync issues right?

[grand kestrel]

I mean, I wouldn't be surprised if I did something wrong or stumbled onto some bug, but it fixed my issues

[wary willow]

@thin stratus ^^^ @rough iron @jolly siren

I don't replicate components on my character

personally, never had to

@grand kestrel Are you saying that you are not replicating CMC ?

[grand kestrel]

CMC replication is disabled by default @wary willow

I had enabled it to replicate some properties which was potentially causing desync

[wary willow]

ya it is

[grand kestrel]

Moving those replicated properties out of CMC and into ACharacter and disabling CMC replication seems to have helped a lot, I also did the same for my derived UActorComponent

[wary willow]

I had to check that

[grand kestrel]

@regal hazel is under the impression that the overhead for replicating a component is insignificant, and may be right, I mentioned this on another server and we're both curious about the verdict

[wary willow]

@grand kestrel and you tested them with them on and off?

[grand kestrel]

Not extensively

I'd have to go through and put everything back, not entirely keen on that with my limited time atm

[jolly siren]

The overhead for component replication is relatively low. Each component within an Actor that replicates will add an additional NetGUID (4 bytes) 'header' and an approximately 1 byte 'footer' along with its properties. CPU wise, there should be minimal difference between replicating a property on an Actor vs replicating on a component.

from the docs^

[grand kestrel]

Yeah

It's just confusing that UT does it that way, and by doing it the same way it fixed the desyncing

Meaning that if my suspicions are correct it would be a bug rather than overhead related

I noticed higher bandwidth from desyncs being corrected, but if you exclude that then it's roughly the same

[regal hazel]

Is this a CMC specific problem? Are you replicating values that are being bit flagged? Maybe that's causing a desync and resulting in more data to be sent to correct the clients

[grand kestrel]

Nah

I'm still replicating the same vars too, just not in CMC

One thing occurs to me though

If I have a bit flag that is predicted, that wont be replicated to other clients will it?

Only server and owning

Because one of them are being replicated with: ``` DOREPLIFETIME_CONDITION(AVDCharacter, bPressedFire, COND_SkipOwner);

However I was having desyncs when not firing

Oh crap I'm wrong, you're right I was replicating something I shouldn't

Hmm but that said, it still stopped my desyncing with dodging and running/jumping around

[grand kestrel]

Ahh yeah so ignore everything I just said, I derped and accidentally put in two DOREPLIFETIME (have a twice-derived ACharacter) for bPressedFire when I moved it out of CMC

So it was still being replicated, and it does need to be for other clients to see it

[floral bison]

So I found a small blurb on a video about it being a bug in things greater than 4.15 and I wanted to ask in here to verify. I havent been able to get a single walk through to work for multiplayer and I;m on 4.17.2

blueprint and multiplayer that is

i create a session fine but no one can seem to join it

[regal hazel]

Glad you worked it out @grand kestrel!

[grand kestrel]

Hmm well I didn't actually find an answer lol

I only worked out that we're back at the beginning

[neon mango]

Are clients ROLE_SimulatedProxy or ROLE_AutonomousProxy or both?

[grand kestrel]

@neon mango SimulatedProxy generally moves by using the last known velocity whereas AutonomousProxy is used for actors possessed by a player controller (and the movement can be based off inputs), if you want to know if you're running code on a client then use APawn::IsLocallyControlled()

[unborn nimbus]

Why when I try to get an item out of a replicated array is the value always null even though the index has an item?