B4J Question jWebSocketClient - cant connect

Alexander Stolte

Alexander Stolte

Expert
Licensed User
Longtime User
I get the following error message if i try to connect to "wss://b4x.com:51041/smiley/ws"
B4X: 
Waiting for debugger to connect...
Program started.
2023-10-11 09:54:11.167:INFO::JavaFX Application Thread: Logging initialized @3000ms to org.eclipse.jetty.util.log.StdErrLog
org.eclipse.jetty.websocket.api.UpgradeException: 0 null
    at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:515)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:193)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:185)
    at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:464)
    at org.eclipse.jetty.client.HttpReceiver.abort(HttpReceiver.java:545)
    at org.eclipse.jetty.client.HttpReceiver.responseFailure(HttpReceiver.java:436)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.failAndClose(HttpReceiverOverHTTP.java:369)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.earlyEOF(HttpReceiverOverHTTP.java:338)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1476)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.shutdown(HttpReceiverOverHTTP.java:209)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:147)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:73)
    at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:133)
    at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:155)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
    at org.eclipse.jetty.io.ssl.SslConnection$2.run(SslConnection.java:136)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:760)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:678)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.io.EOFException: HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]<-DecryptedEndPoint@5d3de879{b4x.com/67.227.218.133:51041<->/192.168.188.20:54622,OPEN,fill=-,flush=-,to=4/0}->HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]->SocketChannelEndPoint@4d9b97eb{b4x.com/67.227.218.133:51041<->/192.168.188.20:54622,ISHUT,fill=-,flush=-,to=4/0}{io=0/0,kio=0,kro=1}->SslConnection@61f26ca7{NEED_WRAP,eio=-1/-1,di=-1}=>HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]
    ... 13 more
org.eclipse.jetty.websocket.api.UpgradeException: 0 null
    at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:522)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:193)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:185)
    at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:464)
    at org.eclipse.jetty.client.HttpReceiver.abort(HttpReceiver.java:545)
    at org.eclipse.jetty.client.HttpReceiver.responseFailure(HttpReceiver.java:436)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.failAndClose(HttpReceiverOverHTTP.java:369)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.earlyEOF(HttpReceiverOverHTTP.java:338)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1476)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.shutdown(HttpReceiverOverHTTP.java:209)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:147)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:73)
    at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:133)
    at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:155)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
    at org.eclipse.jetty.io.ssl.SslConnection$2.run(SslConnection.java:136)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:760)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:678)
    at java.base/java.lang.Thread.run(Thread.java:834)
java.util.concurrent.ExecutionException: org.eclipse.jetty.websocket.api.UpgradeException: 0 null
    at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395)
    at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999)
    at anywhersoftware.b4j.objects.WebSocketClientWrapper.Close(WebSocketClientWrapper.java:102)
    at anywhersoftware.b4j.objects.WebSocketClientWrapper$WSHandler.onWebSocketError(WebSocketClientWrapper.java:163)
    at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onError(JettyListenerEventDriver.java:112)
    at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.incomingError(AbstractEventDriver.java:96)
    at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.handleException(WebSocketUpgradeRequest.java:528)
    at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:522)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:193)
    at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:185)
    at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:464)
    at org.eclipse.jetty.client.HttpReceiver.abort(HttpReceiver.java:545)
    at org.eclipse.jetty.client.HttpReceiver.responseFailure(HttpReceiver.java:436)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.failAndClose(HttpReceiverOverHTTP.java:369)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.earlyEOF(HttpReceiverOverHTTP.java:338)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1476)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.shutdown(HttpReceiverOverHTTP.java:209)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:147)
    at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:73)
    at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:133)
    at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:155)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
    at org.eclipse.jetty.io.ssl.SslConnection$2.run(SslConnection.java:136)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:760)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:678)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.eclipse.jetty.websocket.api.UpgradeException: 0 null
    at org.eclipse.jetty.websocket.client.WebSocketUpgradeRequest.onComplete(WebSocketUpgradeRequest.java:515)
    ... 19 more
Caused by: java.io.EOFException: HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]<-DecryptedEndPoint@5d3de879{b4x.com/67.227.218.133:51041<->/192.168.188.20:54622,OPEN,fill=-,flush=-,to=4/0}->HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]->SocketChannelEndPoint@4d9b97eb{b4x.com/67.227.218.133:51041<->/192.168.188.20:54622,ISHUT,fill=-,flush=-,to=4/0}{io=0/0,kio=0,kro=1}->SslConnection@61f26ca7{NEED_WRAP,eio=-1/-1,di=-1}=>HttpConnectionOverHTTP@7a0e862d(l:/192.168.188.20:54622 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@edccf14(exchange=HttpExchange@21053c9d req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@75f3a03b(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@5bc0994c{s=START}],recv=HttpReceiverOverHTTP@330c594f(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]
    ... 13 more
I have already found several threads with this problem, but without working solutions.

Web socket client SSL can't connect

I have a program that works fine with non secure link to server. When I try to connect to wss link the connection process lasts about 1 minute and then throws following: org.eclipse.jetty.websocket.api.UpgradeException: 0 null .... '''''''''''''''''''' ''''''''''''''''''' WebSocket Closed: 0...
www.b4x.com www.b4x.com

websocket error

Hello, I have a jar file created with b4j to connect to a remote server via websocket and get live updates of a price of stg. My jar randomlu crashes with this : Error:(ExecutionException) java.util.concurrent.ExecutionException: org.eclipse.jetty.websocket.api.UpgradeException: 0 null...
www.b4x.com www.b4x.com

Secure websocket connection won't connect at first attempt

Hello everyone. I'm having a problem getting a secure websocket connection (B4J client to B4J server) to connect consistently.... Based on the various examples in the forum, I've merged the Websocket Push framework with the SQLite version of jRDC2 created by @OliverA, and created a client B4J...
www.b4x.com www.b4x.com

Why Doesn't This Websocket Connect?

I think this should connect. I've tested the URL with an online websocket connection tester, and the connection works there. Private Sub StartWebsocket wsc.Initialize("wsc") wsc.Connect("wss://ws-feed.exchange.coinbase.com") Wait For wsc_Connected Log("Websocket connected!")...
www.b4x.com www.b4x.com

I'm using this code:
B4X: 
    Dim  ws As WebSocketClient
    ws.Initialize("ws")
    Dim ssl As JavaObject
    ssl.InitializeNewInstance("org.eclipse.jetty.util.ssl.SslContextFactory", Array(True))
    Dim jo As JavaObject = ws
    Dim wsc As JavaObject
    wsc.InitializeNewInstance("org.eclipse.jetty.websocket.client.WebSocketClient", Array(ssl))
    jo.SetField("wsc", wsc)
    Sleep(1000)
    ws.Connect("wss://b4x.com:51041/smiley/ws")
    Wait For ws_Connected
    Log("connected")
B4J Version: 10 Beta #2
jWebSocketClient Version: 1.13
Java Version: 11
 

Attachments

  • wssconnection.zip
    2.2 KB · Views: 68
Sort by date Sort by votes
Erel

Erel

B4X founder
Staff member
Licensed User
Longtime User
I see it too and it is probably related to B4X server configuration.

You can make a test by starting two instances of B4J.
1. Create a new server project and run it in release mode.
2. Create a new non-ui project:
B4X: 
Sub Process_Globals
    Private client As WebSocketClient
End Sub

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

Private Sub Start
    client.Initialize("client")
    client.Connect("ws://127.0.0.1:51042/guessmynumber_ws/ws")
    Wait For client_Connected
    Log("connected")
End Sub

Private Sub client_Closed (Reason As String)
    Log("closed: " & Reason)
End Sub
It should connect.
 
Upvote 0
teddybear

teddybear

Well-Known Member
Licensed User
It works in java 8
 
Upvote 0
C

Chris2

Active Member
Licensed User
I don't think I ever tried java 8 when I encountered the problem described in the thread linked to in post #1 here.
I've tried it briefly now and with the test/example apps I attached back then, using java 8 the secure websocket connects first time every time I tried it!

So, for me:
java 8 & jServer3 = wss connects reliably
java 11+ & jServer3 = wss does not connect reliably but does eventually after a few retires
java 11+ & jServer4 = wss does not connect reliably but does eventually after a few retires.

As you say, @Alexander Stolte, it's strange!

Unfortunately I can't use java 8 in my case so I'm just dealing with the fact that it takes the secure websocket a few retries to connect.
I guess something changed between java 8 & 11 that we're missing. It would be lovely to know what it is, so if anyone figures it out please post the solution!
 
Last edited:
Upvote 0
You must log in or register to reply here.

Similar Threads

Jmu5667
  • Question
B4J Question '+' character being changed to space over HTTPS connection
Replies
2
Views
535
Jmu5667
Jmu5667
Erel
  • Locked
  • Article
B4J Tutorial Integrated B4JPackager11 - The simple way to distribute standalone UI apps
2 3
Replies
56
Views
33K
Erel
Erel
Erel
  • Article
B4A Library [B4X] FTP Server implemented with Socket and AsyncStreams
2 3
Replies
43
Views
39K
OliverA
OliverA
Erel
  • Locked
  • Article
B4J Tutorial [IoT] MQTT Protocol
2
Replies
33
Views
45K
Don Oso
Don Oso
Erel
  • Article
B4J Tutorial AsyncStreamsObject - Send and receive objects over the network
2 3
Replies
49
Views
33K
Erel
Erel
Top