B4J Question [ABMaterial] onWebSocketError: Reset cancel_stream_error (HTTP2 only)

Philip Chatzigeorgiadis

Philip Chatzigeorgiadis

Active Member
Licensed User
Longtime User
I have an ABMaterial application.
When i run it with HTTP/2 (to include SSL), whenever a new ABMPage (any ABMPage)is visited by a user, this warning appears on the logs (with red color):
onWebSocketError: Reset cancel_stream_error
However, the page works fine.
The error does not appear when I run HTTP/1.1

How could I address this?

Here are my two StartServer subs.

B4X: 
public Sub StartServer(srvr As Server, srvrName As String, srvrPort As Int)
    ABM.WriteAppLauchPageToDisk(AppPage, File.DirApp & "/www/" & ABMShared.AppName, "index.html", ABMShared.NeedsAuthorization)

    ' start the server
    srvr.Initialize(srvrName)

    ' uncomment this if you want to directly access the app in the url without having to add the app name
    ' e.g. 192.168.1.105:51042 or 192.168.1.105 if you are using port 80
    srvr.AddFilter( "/", "RootFilter", False )
  
    ' NEW V3 Cache Control
    srvr.AddFilter("/*", "ABMCacheControl", False)
    ' NEW 4.00 custom error pages (optional) Needs the ABMErrorHandler class
    srvr.SetCustomErrorPages(CreateMap("org.eclipse.jetty.server.error_page.global": "/" & ABMShared.AppName & "/error")) ' OPTIONAL
    srvr.AddHandler("/" & ABMShared.AppName & "/error", "ABMErrorHandler", False) ' OPTIONAL
  
    srvr.AddWebSocket("/ws/" & ABMShared.AppName, "ABMApplication")
    For i =0 To Pages.Size - 1
        srvr.AddWebSocket("/ws/" & ABMShared.AppName & "/" & Pages.Get(i) , Pages.Get(i))
        If PageNeedsUpload.Get(i) Then
            srvr.AddHandler("/" & ABMShared.AppName & "/" & Pages.Get(i) & "/abmuploadhandler", "ABMUploadHandler", False)
        End If
    Next
    srvr.AddBackgroundWorker("ABMCacheScavenger")
    srvr.Port = srvrPort
      
    #If RELEASE     
    srvr.SetStaticFilesOptions(CreateMap("gzip":True,"dirAllowed":False))
    #Else     
        srvr.SetStaticFilesOptions(CreateMap("gzip":False,"dirAllowed":False))
    #End If
  
    srvr.Start
  
    Dim joServer As JavaObject = srvr
    joServer.GetFieldJO("server").RunMethod("stop", Null)
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setMaxAge", Array(31536000)) ' 1 year
  
    ' NEW FEATURE! Each App has its own Session Cookie
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setName", Array(ABMShared.AppName.ToUpperCase))
    joServer.GetFieldJO("server").RunMethod("start", Null)
  
    Dim secs As Long = ABMShared.CacheScavengePeriodSeconds ' must be defined as a long, else you get a 'java.lang.RuntimeException: Method: setIntervalSec not matched.' error
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionIdManager", Null).RunMethodJO("getSessionHouseKeeper", Null).RunMethod("setIntervalSec", Array As Object(secs))
          
    Dim jo As JavaObject = srvr
    Dim connectors() As Object = jo.GetFieldJO("server").RunMethod("getConnectors", Null)
    Dim timeout As Long = ABMShared.SessionMaxInactiveIntervalSeconds*1000
    For Each c As JavaObject In connectors
        c.RunMethod("setIdleTimeout", Array(timeout))
    Next

    ABMShared.CachedPages = srvr.CreateThreadSafeMap
End Sub

public Sub StartServerHTTP2(srvr As Server, srvrName As String, srvrPort As Int, SSLsvrPort As Int,  SSLKeyStoreFileName As String, SSLKeyStorePassword As String, SSLKeyManagerPassword As String)
    ABM.WriteAppLauchPageToDisk(AppPage, File.DirApp & "/www/" & ABMShared.AppName, "index.html", ABMShared.NeedsAuthorization)

    Dim ssl As SslConfiguration
    ssl.Initialize
    ssl.SetKeyStorePath(File.DirApp, SSLKeyStoreFileName) 'path to keystore file
    ssl.KeyStorePassword = SSLKeyStorePassword
    ssl.KeyManagerPassword = SSLKeyManagerPassword
    srvr.SetSslConfiguration(ssl, SSLsvrPort)

    ' start the server
    srvr.Initialize(srvrName)
  
    ' uncomment this if you want to directly access the app in the url without having to add the app name
    ' e.g. 192.168.1.105:51042 or 192.168.1.105 if you are using port 80
    srvr.AddFilter( "/", "RootFilter", False )
    srvr.AddFilter( "/", "HttpsFilter", False )
  
    ' NEW V3 Cache Control
    srvr.AddFilter("/*", "ABMCacheControl", False)
    ' NEW 4.00  custom error pages (optional) Needs the ABMErrorHandler class
    srvr.SetCustomErrorPages(CreateMap("org.eclipse.jetty.server.error_page.global": "/" & ABMShared.AppName & "/error")) ' OPTIONAL
    srvr.AddHandler("/" & ABMShared.AppName & "/error", "ABMErrorHandler", False) ' OPTIONAL
  
    srvr.AddWebSocket("/ws/" & ABMShared.AppName, "ABMApplication")
    For i =0 To Pages.Size - 1
        srvr.AddWebSocket("/ws/" & ABMShared.AppName & "/" & Pages.Get(i) , Pages.Get(i))
        If PageNeedsUpload.Get(i) Then
            srvr.AddHandler("/" & ABMShared.AppName & "/" & Pages.Get(i) & "/abmuploadhandler", "ABMUploadHandler", False)
        End If
    Next
    srvr.AddBackgroundWorker("ABMCacheScavenger")
    srvr.Port = srvrPort
    srvr.Http2Enabled = True
  
    #If RELEASE     
    srvr.SetStaticFilesOptions(CreateMap("gzip":True,"dirAllowed":False))
    #Else     
        srvr.SetStaticFilesOptions(CreateMap("gzip":False,"dirAllowed":False))
    #End If
      
    srvr.Start
  
    Dim joServer As JavaObject = srvr
    joServer.GetFieldJO("server").RunMethod("stop", Null)
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setMaxAge", Array(31536000)) ' 1 year
  
    ' NEW FEATURE! Each App has its own Session Cookie
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionCookieConfig", Null).RunMethod("setName", Array(ABMShared.AppName.ToUpperCase))
    joServer.GetFieldJO("server").RunMethod("start", Null)
  
    Dim secs As Long = ABMShared.CacheScavengePeriodSeconds ' must be defined as a long, else you get a 'java.lang.RuntimeException: Method: setIntervalSec not matched.' error
    joServer.GetFieldJO("context").RunMethodJO("getSessionHandler", Null).RunMethodJO("getSessionIdManager", Null).RunMethodJO("getSessionHouseKeeper", Null).RunMethod("setIntervalSec", Array As Object(secs))
  
    Dim jo As JavaObject = srvr
    Dim connectors() As Object = jo.GetFieldJO("server").RunMethod("getConnectors", Null)
    Dim timeout As Long = ABMShared.SessionMaxInactiveIntervalSeconds*1000
    For Each c As JavaObject In connectors
        c.RunMethod("setIdleTimeout", Array(timeout))
    Next

    ABMShared.CachedPages = srvr.CreateThreadSafeMap
End Sub

Here are my two Navigate to page subs:

B4X: 
Public Sub NavigateToPage(ws As WebSocket, PageId As String, TargetUrl As String)
    If PageId.Length > 0 Then ABM.RemoveMeFromCache(CachedPages, PageId)
     Try
        If ws.Open Then
            ws.Eval("window.name='';window.location = arguments[0]", Array As Object(TargetUrl))
            ws.Flush
        Else
            Log("ws was closed: " & PageId & ", url: " & TargetUrl )
        End If
    Catch
        Log(LastException.Message)
    End Try
End Sub

Public Sub NavigateToPageNewTab(ws As WebSocket, PageId As String, TargetUrl As String)
    If ws.Open Then
        Dim s As String
        ' check if a mobile phone or a tablet
        s = $"var check = false;
          (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
           if (check) {
              window.location = arguments[0];
          } else {
            window.open(arguments[0],'_blank');             
          }"$       
        ws.Eval(s, Array As Object(TargetUrl))
        ws.Flush
    End If
End Sub
 
Last edited:
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Philip Chatzigeorgiadis

Philip Chatzigeorgiadis

Active Member
Licensed User
Longtime User
Update.
I tried this suggestion from Erel:

B4X: 
'after server.start

Dim logger As JavaObject = srvr.As(JavaObject).GetFieldJO("context").RunMethod("getLogger", Null)

 logger.RunMethod("setLevel", Array("DEBUG"))

from this thread:

Setting the logging level with jServer 4

Hi all, I'm converting a B4J project based on jServer 3 where I'm using the code provided by @rwblinn long time ago (see https://www.b4x.com/android/forum/threads/how-to-disable-jetty-debug-info-please.61448/post-387786): 'Set Jetty Logging Level 'Parameter: Level. Possible values...
www.b4x.com www.b4x.com

but, no matter what logging level I set (ALL|DEBUG|INFO|WARN|OFF), the warning remains.
 
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