B4J Question Web socket client SSL can't connect

E

EvgenyB4A

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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 null


I can succeed to connect to the same link with BrowserWebSocket Clent extension.
 
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EvgenyB4A

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I need to clarify.
Now I work with web socket client and need to connect it to server with secure connection.
I use an extension to check the link and server if it accepts connections.

Is there any B4J websocket client Ssl example that I can connect to the link you sent me?
 
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teddybear

teddybear

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EvgenyB4A said:
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 null
I can succeed to connect to the same link with BrowserWebSocket Clent extension.
Click to expand...
You need a SslContextFactory instance to verify the certificate. try the code below:
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)
   ws.Connect("wss://yourdomanin/...")
   Wait For ws_Connected
   Log("connected")
 
Last edited:
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E

EvgenyB4A

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teddybear said:
You need a SslContextFactory instance to verify the certificate. try the code below:
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)
   ws.Connect("wss://yourdomanin/...")
   Wait For ws_Connected
   Log("connected")
Click to expand...
Unfortunately, I didn't succeed. Can you send example with link you can connect wss?
 
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teddybear

teddybear

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EvgenyB4A said:
Unfortunately, I didn't succeed. Can you send example with link you can connect wss?
Click to expand...
The example is attached, it can connect to wss://b4x.com:51041/smiley/ws
 

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  • wssconnection.zip
    2.1 KB · Views: 120
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EvgenyB4A

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teddybear said:
The example is attached, it can connect to wss://b4x.com:51041/smiley/ws
Click to expand...
Unfortunately, not succeeded.
After about 30 seconds after "Click Me":

Waiting for debugger to connect...
Program started.
2023-07-24 06:41:29.489:INFO::JavaFX Application Thread: Logging initialized @3578ms 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@448d137a(l:/192.168.113.154:50995 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@638e2d52(exchange=HttpExchange@5c5631fa req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@a8a4a87(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@35d9f434{s=START}],recv=HttpReceiverOverHTTP@272fab60(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]<-DecryptedEndPoint@3231dec3{b4x.com/67.227.218.133:51041<->/192.168.113.154:50995,OPEN,fill=-,flush=-,to=6/0}->HttpConnectionOverHTTP@448d137a(l:/192.168.113.154:50995 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@638e2d52(exchange=HttpExchange@5c5631fa req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@a8a4a87(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@35d9f434{s=START}],recv=HttpReceiverOverHTTP@272fab60(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]->SocketChannelEndPoint@2480987c{b4x.com/67.227.218.133:51041<->/192.168.113.154:50995,ISHUT,fill=-,flush=-,to=7/0}{io=0/0,kio=0,kro=1}->SslConnection@5ff77226{NEED_WRAP,eio=-1/-1,di=-1}=>HttpConnectionOverHTTP@448d137a(l:/192.168.113.154:50995 <-> r:b4x.com/67.227.218.133:51041,closed=false)=>HttpChannelOverHTTP@638e2d52(exchange=HttpExchange@5c5631fa req=TERMINATED/null@null res=PENDING/null@null)[send=HttpSenderOverHTTP@a8a4a87(req=QUEUED,snd=COMPLETED,failure=null)[HttpGenerator@35d9f434{s=START}],recv=HttpReceiverOverHTTP@272fab60(rsp=IDLE,failure=null)[HttpParser{s=CLOSED,0 of -1}]]
... 13 more
org.eclipse.jetty.websocket.api.UpgradeException: 0 null

Chrome extension succeeds to connect to this link.
 
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E

EvgenyB4A

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Longtime User
teddybear said:
Try to deploy a local ssl server for the testing
Click to expand...
It will be the problem. Need arrange certificate.
But what may be the problem If from the same PC by another client the connection is being established?
If there another websocket client library on B4J?
 
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C

Chris2

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EvgenyB4A said:
and got occasionly 2 times succes
Click to expand...
Assuming everything was the same on each attempt, the fact you got a connection OK twice would suggest to me that your connection details & certificate are OK.

Try the suggestions from @OliverA and @Erel in posts #2 & #3 of the thread I linked to.

EvgenyB4A said:
I use B4J v9.30.
Click to expand...
Updating to the latest version can't harm as well.
 
Last edited:
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