B4J Question java.net.SocketException: Address family not supported by protocol family: connect

[xulihang]

java.net.SocketException: Address family not supported by protocol family: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:83)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at okhttp3.internal.platform.Platform.connectSocket(Platform.java:124)
    at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:187)
    at okhttp3.internal.connection.RealConnection.buildConnection(RealConnection.java:173)
    at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:114)
    at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:196)
    at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:132)
    at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:101)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:179)
    at okhttp3.RealCall.execute(RealCall.java:63)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.executeWithTimeout(OkHttpClientWrapper.java:156)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.access$0(OkHttpClientWrapper.java:153)
    at anywheresoftware.b4h.okhttp.OkHttpClientWrapper$ExecuteHelper.run(OkHttpClientWrapper.java:201)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
ResponseError. Reason: java.net.SocketException: Address family not supported by protocol family: connect, Response:
java.net.SocketException: Address family not supported by protocol family: connect

don't know how did this happen, my code is just like this:

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    'MainForm.RootPane.LoadLayout("Layout1") 'Load the layout file.
    MainForm.Show
    download
End Sub

'Return true to allow the default exceptions handler to handle the uncaught exception.
Sub Application_Error (Error As Exception, StackTrace As String) As Boolean
    Return True
End Sub

Sub download
    Dim job  As HttpJob
    job.Initialize("",Me)
    job.Download("http://www.example.com")
    Wait For (job) JobDone (job As HttpJob)
    If job.Success Then
        Log(job.GetString)
    Else
        Log(job.ErrorMessage)
    End If
    job.Release
End Sub

 

[xulihang]

Sub AppStart (Args() As String)
    download
    StartMessageLoop
End Sub

'Return true to allow the default exceptions handler to handle the uncaught exception.
Sub Application_Error (Error As Exception, StackTrace As String) As Boolean
    Return True
End Sub


Sub download
    Dim job  As HttpJob
    job.Initialize("",Me)
    job.Download("http://www.example.com")
    Wait For (job) JobDone (job As HttpJob)
    If job.Success Then
        Log(job.GetString)
    Else
        Log(job.ErrorMessage)
    End If
    job.Release
End Sub

The Non-UI program works fine.

 

[Daestrum]

Were you using the nonui version of jokhttputils in the ui program ?

 

[xulihang]

Were you using the nonui version of jokhttputils in the ui program ?

No。 I tried both httputils and okhttputils

 

[xulihang]

I've tested the ui program in my Linux vps and it works fine. I think it has something to do with my internet environment.

 

[Daestrum]

just tried - your code works fine with jOkHttpUtils2 in a ui program.

 

[billzhan]

https://stackoverflow.com/questions...protocol-family-socketexception-on-a-specific

Could be an IPv6 issue on Java 7. Try to run your jar with command line (Linux or Windows)

java -Djava.net.preferIPv4Stack=true yourjar.jar

Or Anti-virus issue, disable it and try again

 

[xulihang]

https://stackoverflow.com/questions...protocol-family-socketexception-on-a-specific

Could be an IPv6 issue on Java 7. Try to run your jar with command line (Linux or Windows)

java -Djava.net.preferIPv4Stack=true yourjar.jar

Or Anti-virus issue, disable it and try again

I ran this under cmd and it works!

setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true

Thanks!