Timeouts, connection reset, and EOF on socket type HTTP, etc.
We've created our own HTTP client simulation tool to run multiple virtual users against Weblogic, but we're seeing lots of errors when we ramp up the number of virtual users. So I'm just trying to figure out if it's something about the way we're handling the sockets in the simulator, or some type of configuration on Weblogic. These are the types of messages I see in the log:
Tue Apr 18 16:48:13 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4803,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:13 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:13 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4806,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:13 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:15 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4815,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:15 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:21 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:37 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4816,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:42 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4817,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:51 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:51 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Thanks in advance,
Mike Gorman, Director of Architecture
YOUcentric, Inc.
Charlotte, NC
704-643-1000 x518
http://www.youcentric.com
Mike,
Try increasing the value of weblogic.login.readTimeoutMillis.
Mike Gorman wrote:
>
We've created our own HTTP client simulation tool to run multiple virtual users against Weblogic, but we're seeing lots of errors when we ramp up the number of virtual users. So I'm just trying to figure out if it's something about the way we're handling the sockets in the simulator, or some type of configuration on Weblogic. These are the types of messages I see in the log:
Tue Apr 18 16:48:13 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4803,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:13 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:13 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4806,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:13 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:15 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4815,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:15 EDT 2000:<I> <ServletContext-Servlets> com.youcentric.servlet.LoginServlet: init
Tue Apr 18 16:48:21 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:37 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4816,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:42 EDT 2000:<W> <ListenThread> Connection rejected: Login timed out after 5000 msec. The socket came from [host=192.168.10.59,port=4817,localport=7001] See property weblogic.login.readTimeoutMillis.
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<E> <PosixSocketMux> connection reset on HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:47 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:51 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Tue Apr 18 16:48:51 EDT 2000:<I> <PosixSocketMux> EOF on socket type HTTP
Thanks in advance,
Mike Gorman, Director of Architecture
YOUcentric, Inc.
Charlotte, NC
704-643-1000 x518
http://www.youcentric.com
Stuart Lawrence
Software Engineer
BEA WebXpress http://www.bea.com
Similar Messages
-
Has anyone ever seen this error before???
Sun Mar 25 09:12:05 PST 2001:<I> <PosixSocketMux> EOF on socket type t3
-stephen
Is this causing problems and do you see this over and over again.
Which version of WLS?
-- Prasad
Stephen Schaubach wrote:
> Has anyone ever seen this error before???
>
> Sun Mar 25 09:12:05 PST 2001:<I> <PosixSocketMux> EOF on socket type t3
>
> -stephen
-
Connection Reset while making http web service call to remote server
Hello guys,
Our environment details are as follows:
WebLogic version: 10.3.3
Cluster: yes
Database: Oracle
Web service server: Remote application
When our WebLogic server makes a http Web service call to another remote application which runs on IIS server for creating a record. The record gets created in remote application but WebLogic server log says java.net.SocketException: Connection reset and the same record doesn't get created in WebLogic application. We have confirmed that remote application is running and it is behaving as expected. Also, we installed web service client on our WebLogic machine just to isolate any network related issues, when we make a same request through this client it works fine and we get answer. At this point in time, it looks like it could be WebLogic or application which is behaving goofy. we are running out of ideas, it would be nice if someone have any thoughts on it like turning on any flags or any other troubleshooting steps. Please, let me know.
Here is the stack trace:
####<Sep 18, 2011 12:31:40 AM MDT> <Info> <com.blah.blah> <server1> <WLSserver> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Defaul
t (self-tuning)'> <user> <BEA1-69D606DA85BDB1A0A7D5> <> <1316327500388> <BEA-000000> <ERROR com.blah.blah - Error during creating a order remoteappja
va.net.SocketException: Connection reset
com.sun.jersey.api.client.ClientHandlerException: java.net.SocketException: Connection reset
at com.sun.jersey.api.client.Client.handle(Client.java:569)
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:556)
at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:69)
at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:451)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:173)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
at weblogic.net.http.MessageHeader.isHTTP(MessageHeader.java:220)
at weblogic.net.http.MessageHeader.parseHeader(MessageHeader.java:143)
at weblogic.net.http.HttpClient.parseHTTP(HttpClient.java:462)
at weblogic.net.http.HttpURLConnection.getInputStream(HttpURLConnection.java:364)
at weblogic.net.http.SOAPHttpURLConnection.getInputStream(SOAPHttpURLConnection.java:37)
at weblogic.net.http.HttpURLConnection.getResponseCode(HttpURLConnection.java:952)
at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:215)
at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:126)
... 58 more
>
thanks a lot for your help in advance
Regards,Here's what the issue was for us:
When the web service was initializing, Weblogic? was trying to retrieve the WSDL first before initializing the service.
Though the web service URL was proper, the WSDL itself was unresolvable. This led to this strange connection reset error.
So, if you're experiencing this consistently, check your WSDL URL.
We used "strace" to discover this problem by running it for a brief time while the web service initialization was attempted - and it very clearly showed that the code was attempting to laod something from a bogus address / IP -
SQL Developer 3.2 - Connection reset
Hi, I've installed SQL Developer 3.2 build MAIN-09.30 under Windows 7 64 bit and Client 11g 64 bit.
Wherever server I try to connect, when I click on a table I have the connection reset and it tries to fetch data with no success, i.e. the Results display show with the gauge moving and nothing more, while in backgroup I have a message box that suggets to reset the connection. If I stop task and choose some other thing, such as data, I can see tha data inside the table. Getting back to Columns, I have to click on refresh button but I don't see anything.
More, I have the following errors:
SEVERE 51 2348 oracle.dbtools.db.DBUtil Avvertenza. Eccezione non gestita: Errore di I/O: Size Data Unit (SDU) mismatch.
SEVERE 50 22991 oracle.dbtools.db.DBUtil Avvertenza. Eccezione non gestita: Errore di I/O: Size Data Unit (SDU) mismatch.
"Avvertenza. Eccezione non gestita: Errore di I/O" is italian for Warning: Unhandled exception: I/O Error
Can U help me please???
Thanks a lot
Edited by: user10660511 on 4-set-2012 7.58 - Added errorsHi,
The case you describe is not familiar to me, but you may want to review this thread with a similar error:
java.sql.SQLRecoverableException Io exception Size Data Unit (SDU) mismatch
The comment there about a "recent JDBC driver upgrade to ojdbc6.jar" is interesting. I encountered a different error within the past couple weeks (can't recall exactly what), but noticed that the ojdbc6 jar files in 64-bit SQL Developer 3.2.09 and Instant Client's do not match. The SQL Developer jar is newer. Copying the one from the Instant Client (11.2.0.3) and replacing the SQL Developer version (supposedly 11.2.0.3 also) fixed whatever issue I faced. Comparing the manifest.mf files shows this:
ojdbc6.jar from SQLDeveloper 3.2.09.23 64-bit -> Repository-Id: JAVAVM_11.2.0.3.0_LINUX.X64_110829
ojdbc6.jar from Instant Client 11.2.0.3 64-bit -> Repository-Id: JAVAVM_11.2.0.4.0_LINUX_120621This is just my best guess at this point.
Let us know if this helps,
Gary
SQL Developer Team -
How can I catch a connection reset with sockets and NSFileHandle
Hi,
I have an iPhone Client that connects to a remote server through a basic TCP Socket (Connected mode, ie SOCK_STREAM).
The communication pipe is then managed through an NSFileHandle.
Everything works fine as long as I don't reset the Server.
In that case, I receive an exception notification in X-Code Debugger. My problem is that I don't know how to catch (and thus manage) this exception:
*NSFileHandleOperationException, reason : [NSConcreteFileHandle readDataOfLength:] : connection reset by peer*
I tried something like that, but I never catch anything there, since I get there only when I have available data, and there are none since the server has closed.
@try{
incomingData = [ListeningSocket readDataOfLength:]
²catch(NSException * e){
NSLog("ReadDataOfLenght notified : %@ with reason : %@",[e name],[e reason])
Do some of you know how I can manage server reset to avoid getting and (unmanaged) exception?You should consider using Bonjour based dynamic publishing and discovery of your service. So when the server service dies, and restarts, the client can detect the restart automatically and connect to the new address of the server.
Hope it helps. (Sorry for the belated response. . I just ran into this post). -
Idle Timeout and "Connection reset by peer"
Is there a connection between the Idle Timeout Setting and getting the "Connection reset by peer error". If I increase the Idle Timeout value am I less likely to get the "Connection reset by peer " issue. It is currently set to 30 seconds
We are printing over a WAN and regularly get this error on a hp LaserJet 4250n
Also what is the difference between Idle Timeout and I-O timeout ?Interesting, I am going to do some research into this tomorrow, as this is not a feature that I work with much. I will get back in touch with you once I have more information so we can test different settings to see if we are able to resolve the issue.
-Spencer
Have a wonderful day! -
Socket read error: connection reset by peer
Hi.
Has anybody experienced the error message �Socket read error: connection reset by peer�
Please see below for detailed information.
Appreciate your help
Regards
RT
Enviroment specification
Server: HP/UX 11.00 64-bit, Oracle RDBMS 8.1.6.0.0 64-bit
2 firewalls between client and db.
Client:
Win 2000,
SP3,
Oracle Client 8.1.7.0.0 ,JDBC OCI (thin JDBC driver,class12.zip)
JDK 1.3
JRUN3.0
The TCP protocol is being used in the communication
Error messages
Web Users receive: Socket read error: connection reset by peer
Trace files on the sever: Read unexpected EOF ERROR on 18.
Explanation: The error in the server sqlnet trace file, suggests that a client connection has terminated abnormally, i.e. client machine powered off, a cable removed or a network connection aborted without warning. No user has complained of such a problem and there is no client trace with an error.
The problem
The users of the java web application, experiencing an exception almost once or twice a day.
The JRUN web-server reports broken connections to the db and client are receiving "connection reset by peer".
At the moment when the errors occurs the users just have to wait a while(2-10 min) and then they can use the web application again.(no action is taken)
This problem can not be reproduced. The problem happens only occasionally when the network is under heavy load and new DB connection is being created.
The application
The java web-application uses a customized connection pooling against the database. This pool is shared among all the users of the website. whenever a user process needs to fetch data from the database, a free connection from this pool is allocated. The application is testing if the connection is valid before making a transaction (select '1' from dual). When the error occurs a ORA-3113 end-of-file on communication channel is returned to the application.
The path between the client and db involves at least two firewalls. The firewalls are opened for sql*net traffic. The network group can tell that enquiries from the app.server is not getting feedback from the db. They have not however, identified if the enquiries are reaching the db-srever, or if they are stopped earlier in the network.
Around 1000 users, are using other applications which uses dedicated sqlnet connections against the db and they have not experienced any problems.
Issues considered
Connection pooling
It is a customized connection pooling, developed by Lindorff developers.
I have read through the source code for the connection pooling and it does the job as it should, and in case of bad connection, it tries to create a new connection.
The log file shows that the call to the method DriverManager.getConnection() hangs until the server goes down, which is probably because of the fact that the method DriverManager.setLoginTimeout(), does not take effect and timeout value is Zero. ( According to oracle , Oracle JDBC does not support login timeouts and calling the static DriverManager.setLoginTimeout() method will have no effect).
Firewall
One thing to consider is when the firewall may decide to shut down the socket due to long inactivity of a connection. This will cause problems to JDBC Connection Pool because the pool is not aware of this disconnection at the TCP/IP level; until someone checks out the connection from the pool and tries to use it. The user will get a Socket read error: connection reset by peer.
Jrun timeout paramter is less than the firewall�s timeout so the firewall will not close a connection before Jrun does.
Number of processes the DB can handle
Processes parameter is 1300, , they have not experienced the Oracle error msg �max # of processes reached�.
Port redirection through a firewall:
Since the firewall has a sql net proxy Port redirection through a firewall is not a problem. Problems with port redirection only appear at connect time, but in this situation the connections fail long after the connection is established.
The network group
The network people who investigaged the problem at Lindorff report that there are a significant amount of "dropped packages" between the database server and the jdbc client (web-application) 24 hrs. The reason for this is "unknown established TCP packet" which means that the firewall does not consider these packages to be part of an already established session. The network group believes this happen because one of the hosts send a RESET or FIN signal which the firewall have noticed but are not received by the other host.
It seems like the firewall are dropping packages bacause of "Unknown
established TCP packet" from both the JDBC client and the TNSLISTENER on the database server. The dropped packages are SQL*Net v2 traffic so clearly Oracle products are involvedPresumably something is working.
Thus the problem is not with your code. At least not the database part that you have control over.
That error occurs when the other side closes the socket. Presumably you are catching lost connection exceptions and trying to restore it. -
Io exception: Connection reset by peer: JVM_recv in socket input stream read
We are developing a new J2EE app using JDev, OC4J, servlets, and EJBs. We have determined that our firewall is closing database connections that have been idle for 1 hour. This is a security requirement that cannot be changed. When we try to use these idle connections in both stateless and entity beans, we consistently receive this or a similar error message:
"ServletSACategoryList: Error invoking EJB procedure. Exception: java.sql.SQLException: StatelessSysAdminBean::getCategoryList - Io exception: Connection reset by peer: JVM_recv in socket input stream read "
Environment:
Oracle 9iAS 9.0.2.0.0
Database: Oracle 8.1.7
JDBC 8.1.7
JDK 1.3
JDev 9.0.2.829
We are using the ejb-location attribute within data-sources.xml for JNDI lookup of the DataSource. Here is what this file looks like:
<data-sources>
<data-source
class="oracle.jdbc.pool.OracleDataSource"
name="jdbc/OracleDS"
location="jdbc/OracleCoreDS"
xa-location="jdbc/xa/OracleXADS"
ejb-location="jdbc/OraclePoolDS"
url="jdbc:oracle:thin:@###.###.#.###:1521:dev1"
connection-driver="oracle.jdbc.driver.OracleDriver"
username="????????"
password="????????"
max-connections="4"
wait-timeout="20"
min-connections="1"
inactivity-timeout="60"
connection-retry-interval="1"
max-connect-attempts="3"
/>
</data-sources>
After calling getConnection() on the Connection object in my stateless bean, I have tried checking if the Connection object is null or isClosed(), I have caught any Exception, and looped to try again, but nothing has worked.
Please respond to [email protected] or directly to this post if you can help in any way.
Thank you,
- RobHi Robert,
If you don't mind, I can only offer a few suggestions for things
to try -- I'm afraid I don't have a solution for you. Of-course,
you may have already tried these things, so please excuse me if
this is the case.
Firstly, your "data-sources.xml" file looks "different". Have
you read the "Data Sources" chapter of the "Oracle9iAS Containers
for J2EE Services Guide, Release 2 (9.0.2)"? It is accessible
from here:
http://otn.oracle.com/docs/products/ias/doc_library/90200doc_otn/web.902/a95879/ds.htm#1004903
Also, have you tried running OC4J in "debug" mode? This web
page has more details:
http://kb.atlassian.com/content/atlassian/howto/orionproperties.jsp
I get the impression from the information you have supplied,
that you may not be explicitly closing your database connections
in your code. It looks to me like you are obtaining a database
connection in your session bean, and then keeping it for the
lifetime of that bean. Is that correct? I think it's better
to obtain a connection when you need to interact with the database,
and then close the connection immediately after completing the
interaction with the database (but that's just my opinion).
Lastly, if you haven't already discovered them, these web sites
may also be of help:
http://www.orionserver.com
http://www.orionsupport.com
http://www.elephantwalker.com
Hope this helps you.
Good Luck,
Avi. -
'Connection reset by peer' and other punchlines - Help!
I recently downloaded the latest version of the the JDBC driver and now the connection to the database drops within a few minutes with the exception "Connection reset by peer". The driver version is
Version 8.0.5.2 JDBC(Thin) for NT. I am connecting to the 8.0.5 on a DEC Alpha machine.
How does one keep the connection alive and prevent it from dropping so often. Why does the connection drop so quickly? Is there a setting on the database?
Any help would be appreciated!
With the older version of the driver the connection dropped intermittently after a few hours or even days with the exception:
"No more data to read from socket". Subsequent attempts to reconnect within the code gave exceptions like:
"Bigger type length than Maximum" and
"Protocol violation"
nullThis could be a number of things. The DB could be killing sessions with something like a resource manager. The network could be dropping. There could be an ora-600 that is aborting a connection. Turn the debugging on by following this blog entry and let us know the results
https://cdivilly.wordpress.com/2013/03/08/configuring-logging-in-oracle-application-express-listener-2-0-1/ -
How to correct socket communications error 10054: connection reset by peer
We are running Lookout 5.1 (build 8) reading data through Modbus Ethernet Drivers and we are constantly getting "socket communications error 10054: connection reset by peer" alarms on the server. When I connect to the server file with a client file the client is experiencing communications problems including locking up when editing, trends not showing up, stops updating completely (can only be corrected by restarting server file), and losing symbolic link.
Does anyone know how to stop this alarm from happening and if this could be the cause of my faulty server-client connection or is this strictly a problem between the server and the ethernet radios in the field?
Any response would be appreciated.
Thanks!
Jason
Jason PhillipsDST1,
All I had to do was increase the receive timeout in each driver's properties until the socket errors disappeared. I have them all set to 30000 msec. Communications have been great on this wireless ethernet system ever since.
Sorry for not answering sooner - needed to make time to go back and look at the file and then TS Lee came our way!
Jason Phillips -
IOException "Connection reset" Socket read.
Please tell me when reading from a socket connection how an IOExcption with "Connection reset " message can occur.
I am basically connecting to a UNIX server program .
Now I am using this exception for detecting invalid user login
So i want know that what are the other ways this exception can occur ,
please help me .
thanks and regards
Renjith.'Connection reset' means you have received a TCP RST. This is sent under a number of circumstances which do not include the peer closing before all the data in transit has arrived at your end. You will not get a connection reset under this circumstance.
If the peer before you have read all the data in transit, the data remains queued at the peer host and will be sent by the peer. It will all arrive at your end followed by a TCP FIN which manifests itself to you as an EOFException or -1. This will all happen correctly provided only that the peer host stays up, and if it doesn't you will only get a read timeout or an indefinite wait in read().
The RST is issued by the other end if you write to it when it is already closed, or if it closes preceded by Socket.setSoLinger(true,0), or if an intervening firewall misbehaves, or if it is a badly written WINSOCK program, or ... -
Bought a new Ipod touch and the WiFi does not connect. Tried Reset and total Restore, does not connect to Router on DHCP, tried Static IP, Subnet, Router and DNS manually and still can not get it to connect even though it registers as connected. Using Airport for router, latest firmware, no problems with Iphone 4 or Macbook Pro or any other internet devices. After total Restore (factory settings) tried again, showed connected to router, but does not display "check" next to router but little rotating icon even though the wifi range signal shows connected at full strength and it says it is connected. Just can't seem to get it to generate an IP. Any solutions other than turning it on and off again? Not a Merry Christmas morning.
Ok, so, a couple of things: Denisefromwaleska and I have the exact same size/type/color iPod. Now wishing I'd bought the black one maybe...
Second, Airport is an Express and I have a second one that I carry with me when I travel. Tried to connect my Airport Express to the internet and could not although the iPod did recognize the router and tried to connect to the internet for some time, unlike my previous problem. Updated firmware on my travel router, still could not connect to the internet. Going to try to set up a manual Static IP on the travel router here in a few and conect through it although I predict the problem will persist. Back on the Christmas Present Airport Express router, it is back in play and working fine for all devices save the iPod.
Thanks again for all your help, hopefully I can get a solution in place soon, -
JCO - Connection reset by peer - after 5 minute timeout
Hello
We're using SUP with the JCO Connector. This has been working flawlessly since project inception. Now, after switching to a new data center (Windows Server 2008 Server Enterprise Edition, SP2 on VMWare) we're observing a mysterious behavior with timeouts of idle connections. I hope someone in this forum knows what this might be.
JCO connections originate from SUP servers. When such connections are idle for more than 5 minutes they get disconnected from SAP -- this is in agreement with SAP timeout parameter of 300 seconds.
On our new systems we noticed that requests sent 5min+ (after timeout) show following error:
Thread-8 [22:08:55:343]: [JNI-LAYER] RFC.nativeExecute() before RfcCallReceive(2,"Z_U_ONEMOBILE_SWO_SEARCH",0000000010CDC850,0000000000000000,0000000010C81530,000000000C79CA88)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeExecute() after RfcCallReceive(2,"Z_U_ONEMOBILE_SWO_SEARCH",0000000010CDC850,0000000000000000,0000000010C81530,000000000C79CA88) = RFC_SYS_EXCEPTION
Thread-8 [22:08:55:344]: [JAV-LAYER] JCO.Client.execute (Z_U_ONEMOBILE_SWO_SEARCH) threw a NON-ABAP exception: com.sap.mw.jco.JCO$Exception: (104) RFC_ERROR_SYSTEM_FAILURE: CPIC-CALL: 'CMRCV : rc=20
ERROR connection to partner '---removed!---:3299'
broken
TIME Fri Feb 11 18:08:55 201
RELEASE 710
COMPONENT NI (network interface)
VERSION 39
RC -6
MODULE nixxi.cpp
LINE 4448
DETAIL NiIWrite: P=161.88.23.170:3299; L=0.0.0.0:49730
SYSTEM CALL WSASend
ERRNO 10054
ERRNO TEXT WSAECONNRESET: Connection reset by peer
COUNTER 3
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() enter, [SUCCESS]
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() before RfcClose(2)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() after RfcClose(2)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() with rc = RFC_OK leave, [SUCCESS]
Our suspicion is that the JCO client doesn't notice the fact that it gets disconnected. We used Network Monitor 3.4 to look at network traffic. Indeed, after 5 minutes the client gets a single frame (with reset flag) and no acknowledgement goes back.
What could this be?
We use
JCO 2.1.8 AMD 64-bit (contains librfc 6.40) and
JCO 2.1.9 AMD 64-bit (contains librfc 6.40) but replaced this with librfc 7.10 (after seeing Note 825494). Behavior was exactly the same. We did confirm in jco/rfc trace that those versions were actually used.
Any ideas?
Thanks and regards
Edited by: B. Gottipati on Feb 14, 2011 9:17 PMHello
We're using SUP with the JCO Connector. This has been working flawlessly since project inception. Now, after switching to a new data center (Windows Server 2008 Server Enterprise Edition, SP2 on VMWare) we're observing a mysterious behavior with timeouts of idle connections. I hope someone in this forum knows what this might be.
JCO connections originate from SUP servers. When such connections are idle for more than 5 minutes they get disconnected from SAP -- this is in agreement with SAP timeout parameter of 300 seconds.
On our new systems we noticed that requests sent 5min+ (after timeout) show following error:
Thread-8 [22:08:55:343]: [JNI-LAYER] RFC.nativeExecute() before RfcCallReceive(2,"Z_U_ONEMOBILE_SWO_SEARCH",0000000010CDC850,0000000000000000,0000000010C81530,000000000C79CA88)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeExecute() after RfcCallReceive(2,"Z_U_ONEMOBILE_SWO_SEARCH",0000000010CDC850,0000000000000000,0000000010C81530,000000000C79CA88) = RFC_SYS_EXCEPTION
Thread-8 [22:08:55:344]: [JAV-LAYER] JCO.Client.execute (Z_U_ONEMOBILE_SWO_SEARCH) threw a NON-ABAP exception: com.sap.mw.jco.JCO$Exception: (104) RFC_ERROR_SYSTEM_FAILURE: CPIC-CALL: 'CMRCV : rc=20
ERROR connection to partner '---removed!---:3299'
broken
TIME Fri Feb 11 18:08:55 201
RELEASE 710
COMPONENT NI (network interface)
VERSION 39
RC -6
MODULE nixxi.cpp
LINE 4448
DETAIL NiIWrite: P=161.88.23.170:3299; L=0.0.0.0:49730
SYSTEM CALL WSASend
ERRNO 10054
ERRNO TEXT WSAECONNRESET: Connection reset by peer
COUNTER 3
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() enter, [SUCCESS]
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() before RfcClose(2)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() after RfcClose(2)
Thread-8 [22:08:55:344]: [JNI-LAYER] RFC.nativeDisconnect() with rc = RFC_OK leave, [SUCCESS]
Our suspicion is that the JCO client doesn't notice the fact that it gets disconnected. We used Network Monitor 3.4 to look at network traffic. Indeed, after 5 minutes the client gets a single frame (with reset flag) and no acknowledgement goes back.
What could this be?
We use
JCO 2.1.8 AMD 64-bit (contains librfc 6.40) and
JCO 2.1.9 AMD 64-bit (contains librfc 6.40) but replaced this with librfc 7.10 (after seeing Note 825494). Behavior was exactly the same. We did confirm in jco/rfc trace that those versions were actually used.
Any ideas?
Thanks and regards
Edited by: B. Gottipati on Feb 14, 2011 9:17 PM -
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