SocketException during reads - JVM_recv in socket input stream read

Question

I am getting a SocketException when a Java applet talks to our
WebLogic 7.0 server. The catch is that it only occurs at one site
(that has very high T1 utilization, although latency is only ~60 ms)
Our setup is such that the calls hit an Alteon load balancer, which
then sends the request out to one of 4 IIS clustered servers, where it
then is sent to one of 2 WL clustered servers. I figured latency
would be the cause, but on IIS and on WL, the timeouts are set to
several hundred seconds, so I am not quite seeing where the connection
is being reset. To be honest, I really don't know if it is WL that is
killing the connection, as nothing abnormal shows up in the WL log. I
have seen similar problems in this group, though, although the stack
traces never follow the same path mine does. I do have the following
call stack from the Java plug-in console, though. Any ideas would be
greatly appreciated.
java.net.SocketException: Connection reset by peer: JVM_recv in socket
input stream read
     at java.net.SocketInputStream.socketRead0(Native Method)
     at java.net.SocketInputStream.read(Unknown Source)
     at java.io.BufferedInputStream.fill(Unknown Source)
     at java.io.BufferedInputStream.read1(Unknown Source)
     at java.io.BufferedInputStream.read(Unknown Source)
     at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
     at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
     at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
     at sun.net.www.protocol.http.HttpURLConnection.getHeaderFields(Unknown
Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.checkCookieHeader(Unknown
Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
     at org.xxxx.abstracts.Controller.sendRequest(Controller.java:39)
     at org.xxxx.data.DataMediator.getDataNode(DataMediator.java:46)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Also, here is my code, although I can't see anything on the client
side that seems off:
public Object sendRequest( Object request, URL receiver ) throws
Exception{
Object response = null;
URLConnection con = null;
ObjectOutputStream out = null;
ObjectInputStream in = null;
try {
con = receiver.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setDefaultUseCaches(false);
con.setAllowUserInteraction(false);
out = new ObjectOutputStream(con.getOutputStream());
out.writeObject(request);
out.flush();
out.close();
in = new ObjectInputStream(con.getInputStream());
response = in.readObject();
in.close();
} catch (ClassCastException e) {
if( out != null ){
out.close();
if( in != null ){
in.close();
} catch (Exception e) {
if( out != null ){
out.close();
if( in != null ){
in.close();
throw e;
return response;

Answer 1

There is a known bug on earlier 1.3.1 releases with sockets on Windows 2k
and XP. I don't remember all the details.
Peace,
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com/coherence.jsp
Tangosol Coherence: Clustered Replicated Cache for Weblogic
"Keith Patrick" <[email protected]> wrote in message
news:[email protected]...
I'm getting the exception on the client, which is an XP machine, while
the server is Win2K. I can't recall which, but either the applet or
the server runs 1.3x while the other runs 1.4. I discounted that
factor, though, as the problem only occurs on one site, which on all
others it works fine.
"Cameron Purdy" <[email protected]> wrote in message
news:<[email protected]>...
Exception is in the applet or on the server?
Would one of those by any chance be running on W2K with JDK 131_01 orolder?
>>
Peace,
Cameron Purdy
Tangosol, Inc.
http://www.tangosol.com/coherence.jsp
Tangosol Coherence: Clustered Replicated Cache for Weblogic
"Keith Patrick" <[email protected]> wrote in message
news:[email protected]...
I am getting a SocketException when a Java applet talks to our
WebLogic 7.0 server. The catch is that it only occurs at one site
(that has very high T1 utilization, although latency is only ~60 ms)
Our setup is such that the calls hit an Alteon load balancer, which
then sends the request out to one of 4 IIS clustered servers, where it
then is sent to one of 2 WL clustered servers. I figured latency
would be the cause, but on IIS and on WL, the timeouts are set to
several hundred seconds, so I am not quite seeing where the connection
is being reset. To be honest, I really don't know if it is WL that is
killing the connection, as nothing abnormal shows up in the WL log. I
have seen similar problems in this group, though, although the stack
traces never follow the same path mine does. I do have the following
call stack from the Java plug-in console, though. Any ideas would be
greatly appreciated.
java.net.SocketException: Connection reset by peer: JVM_recv in socket
input stream read
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
at
sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderFields(Unknown
Source)
atsun.plugin.net.protocol.http.HttpURLConnection.checkCookieHeader(Unknown
Source)
atsun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
at org.xxxx.abstracts.Controller.sendRequest(Controller.java:39)
at org.xxxx.data.DataMediator.getDataNode(DataMediator.java:46)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Also, here is my code, although I can't see anything on the client
side that seems off:
public Object sendRequest( Object request, URL receiver ) throws
Exception{
Object response = null;
URLConnection con = null;
ObjectOutputStream out = null;
ObjectInputStream in = null;
try {
con = receiver.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setUseCaches(false);
con.setDefaultUseCaches(false);
con.setAllowUserInteraction(false);
out = new ObjectOutputStream(con.getOutputStream());
out.writeObject(request);
out.flush();
out.close();
in = new ObjectInputStream(con.getInputStream());
response = in.readObject();
in.close();
} catch (ClassCastException e) {
if( out != null ){
out.close();
if( in != null ){
in.close();
} catch (Exception e) {
if( out != null ){
out.close();
if( in != null ){
in.close();
throw e;
return response;