B4J Question [ABMaterial] Web app with MsSQl database - illegal character Error

Bladimir Carrillo · Oct 7, 2016

This error is related to web app posted here https://www.b4x.com/android/forum/threads/web-app-with-mssql-database.71243/#post-455994

Message related to an illegal character it appears repeatedly
In this case the error persists even when I restart the app or close windows session or restart the computer, and in some cases do not allow to clients to enter to app on any browser, this makes it critical.

From starting app ...

c:\SMAC0434_WEB>java -jar STs.jar
Oct 06, 2016 10:33:01 PM com.mchange.v2.log.MLog <clinit>
INFO: MLog clients using java 1.4+ standard logging.
Oct 06, 2016 10:33:02 PM com.mchange.v2.c3p0.C3P0Registry banner
INFO: Initializing c3p0-0.9.2.1 [built 20-March-2013 11:16:28 +0000; debug? true
; trace: 10]
GZipping HTML, JavaScript and CSS files...
Optimizing new and updated PNG files...
2016-10-06 22:33:05.415:INFO::main: Logging initialized @4596ms
2016-10-06 22:33:05.744:INFOejs.Server:main: jetty-9.3.z-SNAPSHOT
2016-10-06 22:33:05.958:INFOejsh.ContextHandler:main: Started o.e.j.s.ServletC
ontextHandler@365185bd{/,file:///C:/SMAC0434_WEB/www/,AVAILABLE}
2016-10-06 22:33:05.968:INFOejs.AbstractNCSARequestLog:main: Opened C:\SMAC043
4_WEB\logs\b4j-2016_10_07.request.log
2016-10-06 22:33:06.051:INFOejs.ServerConnector:main: Started ServerConnector@
7303cb2{HTTP/1.1,[http/1.1]}{0.0.0.0:40434}
2016-10-06 22:33:06.054:INFOejs.Server:main: Started @5235ms
java.lang.RuntimeException: org.eclipse.jetty.websocket.api.WebSocketException:
RemoteEndpoint unavailable, current state [CLOSED], expecting [OPEN or CONNECTED
]
at anywheresoftware.b4j.object.WebSocket.setEvents(WebSocket.java:378)
at anywheresoftware.b4j.object.WebSocketModule$Adapter$ThreadHandler.run
(WebSocketModule.java:190)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.jetty.websocket.api.WebSocketException: RemoteEndpoint un
available, current state [CLOSED], expecting [OPEN or CONNECTED]
at org.eclipse.jetty.websocket.common.WebSocketSession.getRemote(WebSock
etSession.java:299)
at anywheresoftware.b4j.object.WebSocket.sendText(WebSocket.java:107)
at anywheresoftware.b4j.object.WebSocket.setEvents(WebSocket.java:375)
... 6 more
2016-10-06 22:33:06.991:WARNejh.HttpParser:qtp64830413-19: Illegal character 0
x16 in state=START for buffer HeapByteBuffer@578eb2e9[p=1,l=198,c=8192,r=197]={\
x16<<<\x03\x01\x00\xC1\x01\x00\x00\xBd\x03\x03\xB3\x15\ne\x9c\x91N...\x04\x02\x0
3\x01\x03\x02\x02\x01\x02\x02\x00\x0f\x00\x01\x01>>>Sec-WebSocket-Acc...\x00\x00
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2016-10-06 22:33:06.994:WARNejh.HttpParser:qtp64830413-19: bad HTTP parsed: 40
0 Illegal character 0x16 for HttpChannelOverHttp@214bd1e8{r=0,c=false,a=IDLE,uri
=null}
2016-10-06 22:33:07.213:WARNejh.HttpParser:qtp64830413-25: Illegal character 0
x16 in state=START for buffer HeapByteBuffer@58ffe3ae[p=1,l=198,c=8192,r=197]={\
x16<<<\x03\x01\x00\xC1\x01\x00\x00\xBd\x03\x03\xB6\xEc\xE3\x14\x9d\x93u...\x04\x
02\x03\x01\x03\x02\x02\x01\x02\x02\x00\x0f\x00\x01\x01>>>\x00\x00\x00\x00\x00\x0
0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00...\x00\x00\x00\x00\x00\x00\x00\x00
\x00\x00\x00\x00\x00\x00\x00}
2016-10-06 22:33:07.223:WARNejh.HttpParser:qtp64830413-25: bad HTTP parsed: 40
0 Illegal character 0x16 for HttpChannelOverHttp@1dfd76d5{r=0,c=false,a=IDLE,uri
=null}
2016-10-06 22:33:07.444:WARNejh.HttpParser:qtp64830413-15: Illegal character 0
x16 in state=START for buffer HeapByteBuffer@578eb2e9[p=1,l=116,c=8192,r=115]={\
x16<<<\x03\x01\x00o\x01\x00\x00k\x03\x01;\xD6\xC4rP\xAf;...ac.net\x00#\x00\x00\x
00\x0f\x00\x01\x01>>>\x00\t\x00\x14\x00\x11\x00\x08\x00\x06\x00\x03\x00\xFf\x01\
x00\x00...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2016-10-06 22:33:07.448:WARNejh.HttpParser:qtp64830413-15: bad HTTP parsed: 40
0 Illegal character 0x16 for HttpChannelOverHttp@4c831714{r=0,c=false,a=IDLE,uri
=null}

Any idea please?

Erel · Oct 9, 2016

It seems like a client is sending invalid requests (maybe https requests to a http port).
However this shouldn't affect other clients.

Which error do you get when you try to access the server at that point with a different client?

billzhan · Oct 9, 2016

Caused by: org.eclipse.jetty.websocket.api.WebSocketException: RemoteEndpoint un
available, current state [CLOSED], expecting [OPEN or CONNECTED]
at

It seems that the websocket is closed. Any exception which is not handled (try... catch...) in websocket handler will cause the handler exit.

If possible run in Debug mode to find any detailed logs.

Erel · Oct 10, 2016

billzhan said:
Any exception which is not handled (try... catch...) in websocket handler will cause the handler exit.

That's true. But it will only affect the current connection / request.

Bladimir Carrillo · Oct 10, 2016

Erel said:
That's true. But it will only affect the current connection / request.

As shown in the first post, the error appears when the app start, that is before any client is connected.

Erel · Oct 10, 2016

You cannot see it from the logs.

Based on the logs a client is sending requests. Check the server log files (not the log output). The client ip address will probably appear there.

Bladimir Carrillo · Oct 10, 2016

Erel said:
Based on the logs a client is sending requests. Check the server log files (not the log output). The client ip address will probably appear there.

At this point I had to recompile the app to republish it and the error disappeared. I deleted the temp and log folders.
I will be pending if the error appears again.

Thanks.

Bladimir Carrillo · Oct 19, 2016

Erel said:
You cannot see it from the logs.

Based on the logs a client is sending requests. Check the server log files (not the log output). The client ip address will probably appear there.

Right now the error is appearing again repeatedly ...

2016-10-19 10:39:35.396:WARNejh.HttpParser:qtp112061925-192: Illegal character 0x16 in state=START for buffer HeapByteBuffer@693dda0[p=1,l=116,c=8192,r=115]={
\x16<<<\x03\x01\x00o\x01\x00\x00k\x03\x01)\xA0}\xDe\xFc`\x88...ac.net\x00#\x00\x00\x00\x0f\x00\x01\x01>>>\x00\t\x00\x14\x00\x11\x00\x08\x00\x06\x00\x03\x00\xFf\
x01\x00\x00...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2016-10-19 10:39:35.412:WARNejh.HttpParser:qtp112061925-192: bad HTTP parsed: 400 Illegal character 0x16 for HttpChannelOverHttp@91eccb{r=0,c=false,a=IDLE,uri
=null}

I attach the log file ...

Thank you in advance for your suggestions.

Erel · Oct 20, 2016

What happens after this error? Are other clients able to connect to the server?

billzhan · Oct 20, 2016

B4X:

AboutPage/donotdelete.conn?rand=162398 HTTP/1.1" 200 0

It seems that it's ABMaterial server. It's better to add [AbMaterial] tag to thread title, so some one else can help.

You'd better to run it from you local machine in debug mode to find out which lines cause the exceptions.
Provide more details. Upload the project or a reproducible demo will help.

Bladimir Carrillo · Oct 20, 2016

Erel said:
What happens after this error? Are other clients able to connect to the server?

Yes, fortunately other clients can connect. Today the error has stopped and do not appears.

billzhan said:
You'd better to run it from you local machine in debug mode to find out which lines cause the exceptions.

I has tested in debug mode but the error never appears.

alwaysbusy · Oct 21, 2016

I'll be working on a new system to do the reconnect that may have some infuence on this. I will put a small pre-alpha team of donators together to test it out, but more info on this when I got something.

B4J Question [ABMaterial] Web app with MsSQl database - illegal character Error

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