开发Habbo用户存在检测工具时遇System.Net.WebException错误463求助

Hey there! That 463 error you're hitting is Habbo's anti-bot/anti-scraping system flagging your request as suspicious. Let's break down what's going wrong and how to fix it.

What's Causing the 463 Error? #

Habbo's servers verify that requests come from legitimate browsers by checking for specific HTTP headers. Your current code sends a bare-bones request with no identifying headers, so it gets blocked. There's also a small URL formatting mistake that might be contributing to the issue.

Step-by-Step Fixes #

1. Correct the URL Format #

Your URL uses & (an HTML entity) instead of a plain & to separate query parameters. This will confuse the server and make it misinterpret the user parameter. Replace & with &.

2. Add Browser-Like Request Headers #

At minimum, you need a User-Agent header to mimic a real browser. Adding other common headers like Accept and Accept-Language will make your request look even more legitimate.

3. Fix Variable Name Typo #

You have a typo in your code: repsonse should be response—this would cause a compile error once you resolve the HTTP issues.

Modified VB Code #

Here's the updated version of your checkAccount method with all fixes applied:

Public Sub checkAccount()
    Dim url As String = "https://www.habbo.nl/habbo-imaging/avatarimage?hb=image&user=" + userToCheck
    Dim request As System.Net.HttpWebRequest = DirectCast(System.Net.HttpWebRequest.Create(url), System.Net.HttpWebRequest)
    
    ' Add headers to avoid 463 anti-bot block
    request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36"
    request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"
    request.AcceptLanguage = "en-US,en;q=0.5"
    
    Try
        Dim response As System.Net.HttpWebResponse = DirectCast(request.GetResponse(), System.Net.HttpWebResponse)
        Dim sReader As System.IO.StreamReader = New System.IO.StreamReader(response.GetResponseStream())
        Dim Habboresult As String = sReader.ReadToEnd()
        
        If Habboresult.Contains("HTTP Status 404 – Not Found") Then
            ' Add to free names list
            freeName()
        Else
            ' Add to used names list
            usedName()
        End If
        
        ' Clean up resources properly
        sReader.Close()
        response.Close()
    Catch ex As System.Net.WebException
        ' Handle unexpected errors gracefully
        MessageBox.Show("Error checking account: " & ex.Message)
    End Try
End Sub

Additional Tips #

• Rate Limiting: Don't send requests too quickly—Habbo might block your IP if you flood their servers with automated checks. Add small delays between username checks if processing multiple names.
• Header Updates: Browser User-Agent strings change over time, so you might need to update yours later if the 463 error returns.
• Error Handling: The Try/Catch block ensures your tool doesn't crash unexpectedly if the server is down or your IP gets temporarily blocked.

内容的提问来源于stack exchange，提问作者Thijs