Joining a private/reserved server programmatically

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#1

I acknowledge that this problem is somewhat unusual, and is not likely to be very known about. However, I am hoping that somebody knows more than I do - I’ve been experimenting with this for nearly 24 hours, and deeply need somebody more experienced with this. There isn’t much information about this online.

So - my objective is to launch RobloxPlayerBeta completely programmatically, by supplying the correct arguments to the program. Specifying the account to use & which game to join, and furthermore which private/reserved server to join.

I’ve figured out how to join a public game, so far, but not a reserved server. I have figured out how to join this reserved server, however it is not functional when I specify an account to use.

I open RobloxPlayerBeta with these arguments in order to join the specified game:

Path to RobloxPlayerBeta.exe, "--app", "--fast",
"-a", "https://www.roblox.com/Login/Negotiate.ashx",
"-t", ticket,
"-j", "https://assetgame.roblox.com/game/PlaceLauncher.ashx?request=RequestGame&browserTrackerId={browserSignature}&placeId={placeId}&isPartyLeader=false"

I open RobloxPlayerBeta with these arguments in order to join the reserved server with the account that I am currently logged in with:

Path to RobloxPlayerBeta.exe,  "--app" 
"--deeplink",  "roblox://experiences/start?placeId=2534724415&launchData=%7B%5C%22psCode%5C%22%3A%5C%22IowaSTRP%5C%22%7D"
"-channel", "production"

Problem is that I would like to combine the two, which has proven difficult. I assume that I need to add onto the -j (joinScriptUrl) argument, but I honestly don’t know. I have exhausted all of my options at this point. These are all of the arguments that roblox accepts:
image

If anybody knows what they’re doing, or has any suggestions, it’d be greatly appreciated. Thank you

2 Likes
#2

Can the -j argument include any other launch data needed to join the server because you might be able to manually encode the server’s details into the URL.

#3

Excuse me ignorance but explain what you mean by encoding it into the URL?
I tried appending it to the data in the -j argument by adding this onto it:
&launchData=%7B%5C%22psCode%5C%22%3A%5C%22IowaSTRP%5C%22%7D

As well as:
&launchData={"psCode":"IowaSTRP"}&deep_link_value=roblox%3A%2F%2FplaceId%3D2534724415

However, both attempts were unsuccessful.

#4

I might be wrong, but I noticed something off with the first method you tried:
&launchData=%7B%5C%22psCode%5C%22%3A%5C%22IowaSTRP%5C%22%7D . It included %5C%22 for the quotes, but that adds an unnecessary backslash (%5C ). I believe you just need %22 for the quotes because those extra backslashes could mess up how the data is read because they add characters that shouldn’t be there.

#5

Thanks for your help, but this didn’t work either. I’m all out of ideas. I figure that it must be possible, I just am not sure what to do, this stuff isn’t documented well. I have no idea why the app neglects to read the deeplink when I add these other arguments.