StreamCorruptedException occured when applet calls proxy

Hello, All,
We've recently migrated from Weblogic4.5.1 to Weblogic6.0 SP1. We have an applet
application written in Java Swing that proxy requests to NES server. After the
migration, the applet basically works fine but we've got the following exceptions
when we click "save" button. Can someone give us some insights what can cause
the "EOFException while reading the stream header"
and what we can do to fix the problem? If further information is needed, please
let me know. Thanks a million.
Ting
[7/23/01 3:40:24 PM EDT] <A> RTQ: Exception caught calling proxy (http://palace:7500/,
[Ljava.lang.Object;@4fc23).
[7/23/01 3:40:24 PM EDT] <A> - Throwable stack trace
java.io.StreamCorruptedException: Caught EOFException while reading the stream
header
     at java.io.ObjectInputStream.readStreamHeader(Unknown Source)
     at java.io.ObjectInputStream.<init>(Unknown Source)
     at com.fnx.util.fnxcomm.RemoteInvoker.invoke(RemoteInvoker.java:217)
     at com.fnx.applet.RealTimeQuote.RTQ.callProxyMethod(RTQ.java:342)
     at com.fnx.applet.RealTimeQuote.RTQ_ConfigModel.saveConfig(RTQ_Config.java:360)
     at com.fnx.applet.RealTimeQuote.RTQ_Config$SymAction.saveButton_ActionPerformed(RTQ_Config.java:763)
     at com.fnx.applet.RealTimeQuote.RTQ_Config$SymAction.actionPerformed(RTQ_Config.java:739)
     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
RTQ_Config:save:unsub ...
RTQ_Config:save:setConfig ...

You should use the new version of HttpClusterServelt or plugin from 6.0sp1 to connect
to wls60sp1 server.
"Ting Zhang" <[email protected]> wrote:
>
Dear Mr. Lee,
Thanks so much for your kind reply. Could you give us some hints as
to how to
fix this problem? Do we need reconfigure the plug in or change ProxyServlet
when
we migrate from WebLogic4.5.1? Your help is highly appreciated. Thank
you again.
Ting
"Jong Lee" <[email protected]> wrote:
EOFException occurs when the content-length header does not match the
actual bytes
write by wls.
"Ting Zhang" <[email protected]> wrote:
Hello, All,
We've recently migrated from Weblogic4.5.1 to Weblogic6.0 SP1. We
have
an applet
application written in Java Swing that proxy requests to NES server.
After the
migration, the applet basically works fine but we've got the following
exceptions
when we click "save" button. Can someone give us some insights what
can cause
the "EOFException while reading the stream header"
and what we can do to fix the problem? If further information is needed,
please
let me know. Thanks a million.
Ting
[7/23/01 3:40:24 PM EDT] <A> RTQ: Exception caught calling proxy (http://palace:7500/,
[Ljava.lang.Object;@4fc23).
[7/23/01 3:40:24 PM EDT] <A> - Throwable stack trace
java.io.StreamCorruptedException: Caught EOFException while readingthe
stream
header
     at java.io.ObjectInputStream.readStreamHeader(Unknown Source)
     at java.io.ObjectInputStream.<init>(Unknown Source)
     at com.fnx.util.fnxcomm.RemoteInvoker.invoke(RemoteInvoker.java:217)
     at com.fnx.applet.RealTimeQuote.RTQ.callProxyMethod(RTQ.java:342)
     at com.fnx.applet.RealTimeQuote.RTQ_ConfigModel.saveConfig(RTQ_Config.java:360)
     at com.fnx.applet.RealTimeQuote.RTQ_Config$SymAction.saveButton_ActionPerformed(RTQ_Config.java:763)
     at com.fnx.applet.RealTimeQuote.RTQ_Config$SymAction.actionPerformed(RTQ_Config.java:739)
     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
     at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown
Source)
     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
RTQ_Config:save:unsub ...
RTQ_Config:save:setConfig ...

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     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
network: Voce cache non trovata [url: http://www.orion.lan/~antares/it/weev/wipidea/base/PluginLoader.class, versione: null]
network: Connessione a http://www.orion.lan/~antares/it/weev/wipidea/base/PluginLoader.class con proxy=DIRECT
network: Voce cache non trovata [url: http://www.orion.lan/~antares/it/weev/wipidea/base/network-classpath.class, versione: null]
---The strange thing is that if I don't sign both JARs the class A is casted on B without any exception, could for security reason like hash or other? Ideally I need all JAR signed only because I plan to load classes from all over the net, but seems that URLClassLoader throws an AccessControlException when called.
Anyway just now I solve all using only the common JVM ancestor of A and B, but what could be the final solution?
Thanks, bye.

Hi Sean,
The file in question has been signed which causes issues in both OSB directly and in Eclipse when we do an import into that tool first.Can you let us know what issues you faced? Any errors? If yes, please post the same here.
Regards,
Anuj
Edited by: Anuj Dwivedi on Feb 23, 2011 9:10 PM

HTTPS with Applet over Proxy Issue

An applet using HttpURLConnection within a Java Applet. The Connection is formulated as follows:
HttpURLConnection urlConn = (HttpURLConnection)destURL
.openConnection( );
urlConn.setDoOutput( true );
urlConn.setDoInput( true );
urlConn.setUseCaches( false );
urlConn.setAllowUserInteraction( false );
urlConn.setRequestProperty( "Content-type","multipart/form-data" );
urlConn.setRequestProperty( "Content-length","" + parameters.length( );This works fine with numerous proxy servers and other network
topologies, except one. The issue I am told occurs when we are trying to
connect over https. For background, my understanding is this causes the Java Plug-in to :
* invoke the http CONNECT command
* wait for the 200 OK indicating that the secure tunnel is established
* then send the request securely.
Doing a packet trace shows that the headers set in the code are
actually being included with the CONNECT. However the Java Plug
(1.4.2_06) does not sent the body with the CONNECT. I am told this
causes the proxy to wait for an entity that never arrives, because, on
the other end, the plug-in is waiting for 200 OK. After 8 secs the
plug-in resets the connection and fails.
Packet traces on other proxies show the same content-length header being
included, but they decide ignore it. From Googling I note some folks
claim that this is expected, because CONNECT is non-entity enclosing.
Doc's are scant on the CONNECT command. In some cases they seem to imply
that no data should go with the CONNECT (making it non-entity
enclosing), but later they state it supports data-pipelining, making the
content-length relevant, as the CONNECT may well contain an entity.
Moreover, is the intent of Applet Framework to insulate the programmer
from having to worry about issues like this? For example this Applet can
and does connect to a myriad of HTTP/1.1 or 1.0 server through a proxy
or not; in the case of no proxy or non secure proxy, the content-length
header is valid as the request goes out in one go with associated
headers. So writing the code as above, does not seem to be inherently
flawed, IMO. <-- And that is a question too :).
I note there is an isProxy() method, but this can only be determined
after connection (obviously) and parameters cannot be changed once the
connection is made. So creating a dummy connection first is possible I
suppose, but it seems a slippery slope to start coding for exceptions
like this, unless absolutely necessary.
On the face of it, it could be argued that this appears to be a bug in
the plug-in but with very little hits in google I am doubtful. To that
end, does anyone have any thoughts or experience with either working
around the problem (it would seem to be a pity to have to have a setting
per client), or whether in fact this proxy server is being too draconian
in its interpretation.
Thanks in advance,
Gary
Refs:
RFC2616
http://www.web-cache.com/Writings/Internet-Drafts/draft-luotonen-web-proxy-tunneling-01.txt

Pardon my ignorance about proxies, but how do you tell the plug-in that there is a proxy in between you and the destination?
The reason I ask is because with the https protocol, the first thing that happens is that an SSL connection is set up between the endpoints, and only after, through this secure tunnel, is the GET request or whatever sent. The proxy never gets to see any of the HTTP headers.

Error occured when executing RFC ......RFC_EXTERNAL_ABORT error

Hi All,
My scenario is RFC to Proxy synchronous scenario and data is sent from 4.6C to ECC system and responds back to 4.6C with the data fetched from ECC.
All the development and mappings in XI are working fine.
The Program dumps often in 4.6C system, When the program is executed initially, it is working fine but the subsequent execution fails with the dump u201CRFC_EXTERNAL_ABORTu201D , As a work around we had to stop and start the RFC sender Channel for it to work fine.
Kindly let me know if the issue is with the RFC destination ?
Dump:
Call to messaging system failed
Error Analysis:
An error occured when exectuing a REMOTE FUNCTION CALL
It was logged under the name "RFC_EXTERNAL_ABORT" on the called page
Internal Notes:
The termination occured in the function "ab_rfcrecieve" of the SAP Basis System.......
Kindly need you valuable inputs to solve this issue
Thank you ,
Regards,
Pavithra

Hi Rangarajan,
Thanks for your reply
I had went through this thread and checked the RFC destination in SM59 of 4.6C system . I am able to do Remote Logon and the test connection works fine and also the function module is remote enabled, but still the program dumps
Kindly suggest me what are the other check areas .
Thank you,
Pavithra
Edited by: Pavithra L on Mar 17, 2011 8:07 AM

SQL error 3113 occurred when executing EXEC SQL.

Hi,
We are facing one typical problem, One background is failing regularly with
below dump. as we now got all notes giving information, if database restarted
taking backup, these type of failures occur, but our database is only down for backup once in a week, but it is failing with frequenly.
in this two servers are located in different place, in this job tries to connect
another server to get material statistics.
It is giving some error message in sm21 with
SQL error 3113 occurred when executing EXEC SQL.
work procees in reconnect mode.
all notes saying these types of dump occur when database restared, but this dump
even though database is up.
below is short dump, please can anyone help me from this problem.
ABAP runtime errors    DBIF_DSQL2_SQL_ERROR
      Occurred on    08.01.2007 at 00:30:28
>> Short dump has not been completely stored. It is too big.
SQL error 3113 occurred when executing EXEC SQL.
What happened?
The error occurred in the current database connection "AZ1".
What can you do?
Note the actions and input that caused the error.
Inform your SAP system administrator.
You can print out this message by choosing "Print". Transaction ST22
allows you to display and manage termination messages, including keeping
them beyond their normal deletion date.
Error analysis
How to correct the error
Database error text........: "ORA-03113: end-of-file on communication channel#"
Triggering SQL statement...: "select mara.groes, mara.brgew, mara.ntgew,
mara.gewei, mara.volum, mara.voleh, mara.mstae, mara.mstde, mara.prdha,
marc.matnr, marc.werks, marc.mmsta, marc.mmstd from sapr3.mara, sapr3.m
where sapr3.mara.mandt = sapr3.marc.mandt and sapr3.mara.matnr =
Internal call code.........: "[DBDS/NEW DSQL]"
Please check the entries in the system log (Transaction SM21).
If the error occurred in a non-modified SAP program, you may be
able to find a solution in the SAP note system.
If you have access to the note system yourself, use the following
search criteria:
"DBIF_DSQL2_SQL_ERROR"
"ZM2431216 " or "ZM2431216 "
"EXTRACT_GENERAL_DATA"
If you cannot solve the problem yourself, please send the
following documents to SAP:
1. A hard copy print describing the problem.
To obtain this, select the "Print" function on the current screen.
2. A suitable hardcopy prinout of the system log.
To obtain this, call the system log with Transaction SM21
and select the "Print" function to print out the relevant
part.
3. If the programs are your own programs or modified SAP programs,
supply the source code.
To do this, you can either use the "PRINT" command in th
print the programs using the report RSINCL00.
4. Details regarding the conditions under which the error o
or which actions and input led to the error.
System environment
SAP Release.............. "46C"
Application server....... "essceu3"
Network address.......... "172.19.119.198"
Operating system......... "AIX"
Release.................. "5.3"
Hardware type............ "00C7ADBD4C00"
Database server.......... "ukblx176"
Database type............ "ORACLE"
Database name............ "EU3"
Database owner........... "SAPR3"
Character set............ "es_ES.ISO8859-1"
SAP kernel............... "46D"
Created on............... "Jul 9 2006 20:26:33"
Created in............... "AIX 1 5 00447C4A4C00"
Database version......... "OCI_920__OCI_7_API "
Patch level.............. "2257"
Patch text............... " "
Supported environment....
Database................. "ORACLE 8.0.5.., ORACLE 8.0.6.., ORACLE
8.1.6.., ORACLE 8.1.7.., ORACLE 9.2.0.., ORACLE 10.2.0.."
SAP database version..... "46D"
Operating system......... "AIX 1 4, AIX 2 4, AIX 3 4, AIX 1 5, AIX 2 5, AIX 3
5, , System build information:,                                      , LCHN :
841480"
User, transaction...
Client.............. 600
User................ "MPZMMES"
Language key........ "S"
Transaction......... " "
Program............. "ZM2431216 "
Screen.............. "SAPMSSY0 1000"
Screen line......... 6
Information on where termination occurred
The termination occurred in the ABAP/4 program "ZM2431216 " in
"EXTRACT_GENERAL_DATA".
The main program was "ZM2431216 ".
The termination occurred in line 980
of the source code of program "ZM2431216 " (when callin
The program "ZM2431216 " was started as a background jo
Source code extract
009500              mara.ntgew,
009510              mara.gewei,
009520              mara.volum,
009530              mara.voleh,
009540              mara.mstae,
009550              mara.mstde,
009560              mara.prdha,
009570              marc.matnr,
009580              marc.werks,
009590              marc.mmsta,
009600              marc.mmstd
009610        into :w_ops-groes,
009620              :w_ops-brgew,
009630              :w_ops-ntgew,
009640              :w_ops-gewei,
009650              :w_ops-volum,
009660              :w_ops-voleh,
009670              :w_ops-mstae,
009680              :w_ops-mstde,
009690              :w_ops-prdha,
009700              :w_ops-matnr,
009710              :w_ops-werks,
009720              :w_ops-mmsta,
009730              :w_ops-mmstd
009740        from sapr3.mara, sapr3.marc
009750        where sapr3.mara.mandt = sapr3.marc.mandt
009760          and sapr3.mara.matnr = sapr3.marc.matnr
009770          and sapr3.mara.mandt = :p_mandt
009780          and sapr3.mara.matnr = :w_ebs-matnr
009790          and sapr3.marc.werks = :p_owerks
    >    ENDEXEC.
009810 endform.                    " extract_general_data
009820 *&
009830 *&      Form append_i_ops
009840 *&
009850 *      Appends W_OPS to I_OPS
009860 *
009870 form append_i_ops.
009880    append w_ops to i_ops.
009890 endform.                    " append_i_ops
009900 *&
009910 *&      Form extract_material_description
009920 *&
009930 *      Extracts a Material Description from the remote database an
009940 *      modifies the current record in I_OPS.
009950 *
009960 *        >P_SPRAS Language Key
009970 *
009980 form extract_material_description using    p_spras.
009990    EXEC sql performing set_langauge.
Contents of system fields
SY field contents..................... SY field contents............
SY-SUBRC 0                            SY-INDEX 0
SY-TABIX 1                            SY-DBCNT 1
SY-FDPOS 18                            SY-LSIND 0
SY-PAGNO 0                            SY-LINNO 1
SY-COLNO 1
Chosen variables
Name.......................... Contents.1........2........3....+..
W_EBS-PRAT4
                              2
                              0
W_OPS-GROES
                              22222222222222222222222222222222
                              00000000000000000000000000000000
W_OPS-BRGEW                    #######
                              0000000
                              000000C
W_OPS-NTGEW                    #######
                              0000000
                              000000C
regards,
krishnaiah.

Hi,
This is usually a SERVER SIDE DATABASE PROBLEM or SQLNET LISTENER (server side) PROBLEM. The client side should initially be ignored and instead the server should be investigated. In rare cases, this can be caused by client
side memory or other resource problem, or a DLL version mismatch, but this is
unlikely.
Enlist the assistance of your DBA. Then reproduce the ORA-3113 error on your
client application. Ask your DBA to look at the database side Alert.log and
trace files and look for ANY activity. Any activity that coincides with your
ORA-3113 will be a clue.
REgards
Vinod

StreamCorruptedException occured when applet calls proxy

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