#Issue with teleport service

1 messages · Page 1 of 1 (latest)

long spear
# 
local function SafeTeleport(placeId, reservedServerAccessCode, players, options)
    local attemptIndex = 0
    local success, result

    reservedServerAccessCodeGlobal = reservedServerAccessCode
    
    repeat
        success, result = pcall(function()
            return TeleportService:TeleportToPrivateServer(placeId, reservedServerAccessCode, players, options)
        end)
        attemptIndex += 1
        if not success then
            task.wait(RETRY_DELAY)
        end
    until success or attemptIndex == ATTEMPT_LIMIT

    if not success then
        warn(result)
    end

    return success, result
end

local function handleFailedTeleport(player, teleportResult, errorMessage, PlaceId, teleportOptions, reservedServerAccessCode, players)
    if teleportResult == Enum.TeleportResult.Flooded then
        task.wait(FLOOD_DELAY)
    elseif teleportResult == Enum.TeleportResult.Failure then
        task.wait(RETRY_DELAY)
    else
        error(("Invalid teleport [%s]: %s"):format(teleportResult.Name, errorMessage))
    end
    
    local players = {player}

    SafeTeleport(PlaceId, reservedServerAccessCode, players, teleportOptions)
end

TeleportService.TeleportInitFailed:Connect(function(player, teleportResult, errorMessage, PlaceId, teleportOptions)
    table.insert(failedPlayers, player)
    handleFailedTeleport(player, teleportResult, errorMessage, PlaceId, teleportOptions, reservedServerAccessCodeGlobal, {player})
end)

return SafeTeleport

what's the issue with this teleport script? btw, this is modified off of roblox docs' teleport script

mint laurel
#

Undefined Variables/Services:

TeleportService: If TeleportService isn't defined (e.g., via local TeleportService = game:GetService("TeleportService") elsewhere), any call to :TeleportToPrivateServer will error immediately.

Constants (RETRY_DELAY, ATTEMPT_LIMIT, FLOOD_DELAY): If these constants aren't defined elsewhere with valid numbers, the script will error when trying to use them (e.g., in task.wait() or the until condition).

failedPlayers: If this table isn't defined elsewhere (local failedPlayers = {}), the table.insert line will error.

Incorrect reservedServerAccessCodeGlobal Usage:

The Core Problem: The TeleportInitFailed event handler relies on a global variable reservedServerAccessCodeGlobal. This global is only set inside the SafeTeleport function.

Why it Fails:

Timing: The TeleportInitFailed event might fire after the SafeTeleport function that initiated the teleport has already finished. If another SafeTeleport call happens in the meantime (or none happen), reservedServerAccessCodeGlobal could be nil or hold the code for a completely different teleport attempt.

Race Condition: If SafeTeleport is called multiple times quickly for different groups/destinations, reservedServerAccessCodeGlobal will be overwritten, and the failure handler will almost certainly use the wrong access code when trying to retry.

Result: When handleFailedTeleport is called, it receives an incorrect (or nil) reservedServerAccessCode from the global variable, causing the retry attempt via SafeTeleport inside the handler to fail immediately or target the wrong server. The entire retry mechanism breaks down.

wanton jungle
mint laurel
# wanton jungle Oh please don't copy & paste ChatGPT responses.

Im sorry @wanton jungle. Next time i will write out each part of my answer myself, wasting time when chatgpt gets my points across just as well. If you find anything wrong with what i said then i will be more than happy to write it myself but i read it through its correct...

wanton jungle
mint laurel
#

Brother, if you think that is chatgpt you honestly just need to start speaking properly.

mint laurel
wanton jungle
wanton jungle
mint laurel
versed groveBOT
#

studio** You are now Level 1! **studio

wanton jungle
mint laurel
#

Im going to end this argument on this note let him argue that and choose what he wants or doesnt want

long spear
#

fyi it's a module script I forgot to mention that

mint laurel
#

oh

#

Did u test that? Like do you know it works?

long spear
mint laurel
#

ah

long spear
#

not the module script itself, I think it's the method I'm using to call it

#

I'll send it once I finish analyzing the script you sent

long spear
# 
    if not success then
        warn(("SafeTeleport failed after %d attempts for place %d: %s"):format(ATTEMPT_LIMIT, placeId, tostring(result)))
        -- If the initial attempts fail completely, clear pending codes for these players
        -- as TeleportInitFailed won't fire for them for *this* specific attempt.
        for _, player in ipairs(playersToTeleport) do
            if player and pendingTeleportCodes[player.UserId] == reservedServerAccessCode then
                pendingTeleportCodes[player.UserId] = nil
                handlerRetryCounts[player.UserId] = nil
            end
        end
    else

why would it fail completely? won't it trigger TeleportInitFailed?

# 
        -- Don't use error() here as it stops the script thread. Warn and exit retry.

I'm assuming a script thread is specific to the player hosting it, so why is it an issue if it stops it since we're returning anyway?

#

I'm guessing the failedPlayers list is also redundant because TeleportInitFailed does the job

#

also, if possible, could you please explain how to use logical operations when defining variables?

mint laurel
#

Sorry was playing some cs

#

Global Code Issue: TeleportInitFailed doesn't trigger before. It triggers later for a player's failure. If SafeTeleport ran again for someone else between the start and the failure signal, the global code changes, making the failure handler use the wrong one.

Why SafeTeleport Fails Completely: The pcall inside SafeTeleport might fail immediately (e.g., bad input) before Roblox even tries to teleport anyone. If Roblox never starts the teleport, TeleportInitFailed won't fire for that attempt, so we clean up manually.

Why error() is Bad: error() stops the entire event processing thread. If one player's failure causes an error, the handler might stop working for all other players' failures too. warn() just logs the issue and continues.

failedPlayers List Redundancy: Mostly yes. TeleportInitFailed tells you who failed right when it happens. The list is only useful if you need a final list after all retries are done.

Logical Ops for Variables:

Use or for defaults: local name = providedName or "Default" (gets providedName unless it's nil/false).

Use and/or for conditional choice: local message = isError and "Error!" or "OK!".

versed groveBOT
#

studio** You are now Level 2! **studio

long spear
mint laurel
#

im getting confused here too long since i sent the original messages

long spear
#

btw, here's the script that causes the HTTP 403 Forbidden error:

local function initiateTeleport()
            print("invokedTeleport")
            local result = Teleport:InvokeServer(queue.Name)
            
            Change1:FireServer(queue.Name, mainUI.Name, "Teleporting...")
            
            repeat task.wait() until result
            
            reset()
        end

specifically on the line that invokes the teleport function

the initiateTeleport() function is used here:

breakEvent.Event:Connect(function(bool)
                if not bool then return end
                task.wait(0.2)
                
                print("success, initiating")
                initiateTeleport()
            end)

here's the Teleport function on the server side:

Teleport.OnServerInvoke = function(plr, queueName)
    local queue = TeleportQueues:FindFirstChild(queueName)
    if not queue then return end
    
    print("caught")
    
    local prompt = queue:FindFirstChild("ProximityPrompt")
    
    local teleportOptions = Instance.new("TeleportOptions")
    teleportOptions:SetTeleportData(data)
    teleportOptions.ShouldReserveServer = true
    local reservedServerAccessCode = TeleportService:ReserveServer(placeId)
    teleportOptions.ServerInstanceId = reservedServerAccessCode

    local playersToPass = {}
    for _, player in pairs(players[queue]) do
        table.insert(playersToPass, player)
    end

    SafeTeleport(placeId, reservedServerAccessCode, playersToPass, teleportOptions)
    print("safeteleport")

    Debounces[queue] = false
    players[queue] = {}
    partyHost[queue] = nil

    task.wait(3)
    
    prompt.Enabled = true
    return true
end
long spear
mint laurel
#

This code: local message = isError and "Error!" or "OK!"

Is a short way to say:

If isError is true, message becomes "Error!".

If isError is false, message becomes "OK!".

It works because of how and and or pick values in Luau.

A clearer way in modern Luau is: local message = if isError then "Error!" else "OK!"

long spear
#

alright thanks

long spear
mint laurel
#

Working on it

#

Turn on allow http requests to roblox servers in ur game settings

#

In Roblox Studio, go to Home -> Game Settings.

Go to the Security tab.

Turn ON "Allow HTTP Requests to Roblox Servers" or similar wording like "Enable Studio Access to API Services.

#

The 403 error usually means your game doesn't have permission to use TeleportService. Enabling that setting grants permission.

long spear
mint laurel
#

Hmm uhmm interesting

long spear
#

I enabled both of these

image.png
mint laurel
#

Fix Retry Logic:

Remove the reservedServerAccessCodeGlobal variable.

In SafeTeleport, before calling TeleportToPrivateServer, store the placeId and reservedServerAccessCode inside the TeleportOptions using :SetTeleportData().

In the TeleportInitFailed handler, get the failed player and the teleportOptions passed to the event. Read the retry info using :GetTeleportData().

Call SafeTeleport again only for the failed player using the retrieved info.

Fix Client Script: Remove the repeat task.wait() until result loop in initiateTeleport. Just InvokeServer and update the UI; don't wait for the server to return.

Avoid error(): In the TeleportInitFailed handler, use warn() instead of error() for invalid results to avoid stopping the handler script.

long spear
mint laurel
#

Fuck i might be tired but yes i believe that might work

long spear
#

isn't that info already passed in as a param

mint laurel
long spear