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Posted to soap-dev@ws.apache.org by Tiago Fernandes Thomaz <ti...@optimus.pt> on 2002/04/22 11:58:50 UTC
Heavy loads on SOAP RPC
Hi,
I'm facing some trouble concerning heavy loads on soap rpc.
I coded a soap client that simulates several clients with a Thread
implementation.
My snippet code is:
public class SOAPClient
{
public static void main (String[] args) throws Exception
{
URL url = new URL(args[0]);
String sXML = null;
for (int i = 0; i < 50; i++)
{
sXML = "<?xml version=\"1.0\" encoding=\"US-ASCII\"?><request client
= \"client"+i+"\" action = \"action"+i+"\"><parameter name =
\"name"+i+"\">My Name"+i+"</parameter></request> ";
Call call = new Call();
call.setTargetObjectURI("urn:Connector");
call.setMethodName("sendRequest");
call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
Vector params = new Vector();
params.addElement(new org.apache.soap.rpc.Parameter("sXML",
String.class, sXML, null));
call.setParams(params);
(new TestThread(call, url)).start();
}
}
}
public class TestThread extends Thread
{
Call testCall = null;
URL url = null;
public TestThread(Call testCall, URL url)
{
this.testCall = testCall;
this.url = url;
}
public void run()
{
try {
org.apache.soap.rpc.Response resp = testCall.invoke(url, "");
if (resp.generatedFault())
{
Fault fault = resp.getFault();
System.out.println(this.getName() + "Fault Code = " +
fault.getFaultCode());
System.out.println(this.getName() + "Fault String = " +
fault.getFaultString());
}
else
{
org.apache.soap.rpc.Parameter result = resp.getReturnValue();
String res = result.toString();
Object obj = result.getValue();
String resp2 = obj.toString();
System.out.println(this.getName()+" - Result: "+resp2);
}
}
catch (Exception e)
{
System.out.println(this.getName() + " :Error! - " + e.getMessage());
}
}
}
, and I'm getting the following exception for most of the Threads (30 out of
50):
Thread-i Error opening socket: Connection refused: connect
Does anyone explain me why am I getting this? Is it because SOAP can only
handle about 20 http connections?
Tiago Fernandes Thomaz
Re: Heavy loads on SOAP RPC
Posted by Scott Nichol <sn...@scottnichol.com>.
Also note that if you use a Microsoft OS, you will be limited to 10 queued
connections unless you run the Server, Advanced Server, etc., version of the OS.
Scott
----- Original Message -----
From: "Scott Nichol" <sn...@scottnichol.com>
To: <so...@xml.apache.org>
Sent: Monday, April 22, 2002 8:09 AM
Subject: Re: Heavy loads on SOAP RPC
> The Web server and/or servlet container against which you are testing probably
> has a limit set for the number of connections it will queue. In Tomcat 3.2.1,
> for example, server.xml has the "backlog" parameter for a Connector:
>
> <!-- Normal HTTP -->
> <Connector className="org.apache.tomcat.service.PoolTcpConnector">
> <Parameter name="handler"
> value="org.apache.tomcat.service.http.HttpConnectionHandler"/>
> <Parameter name="port"
> value="8080"/>
> <Parameter name="backlog" value="100"/>
> </Connector>
>
> In Tomcat 4.0.1, the Connector has an acceptCount attribute:
>
> <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
> <Connector className="org.apache.catalina.connector.http.HttpConnector"
> port="8080" minProcessors="5" maxProcessors="75"
> enableLookups="true" redirectPort="8443"
> acceptCount="10" debug="0" connectionTimeout="60000"/>
>
> Scott Nichol
>
> ----- Original Message -----
> From: "Tiago Fernandes Thomaz" <ti...@optimus.pt>
> To: <so...@xml.apache.org>
> Sent: Monday, April 22, 2002 5:58 AM
> Subject: Heavy loads on SOAP RPC
>
>
> > Hi,
> >
> > I'm facing some trouble concerning heavy loads on soap rpc.
> > I coded a soap client that simulates several clients with a Thread
> > implementation.
> > My snippet code is:
> >
> > public class SOAPClient
> > {
> > public static void main (String[] args) throws Exception
> > {
> > URL url = new URL(args[0]);
> > String sXML = null;
> >
> > for (int i = 0; i < 50; i++)
> > {
> > sXML = "<?xml version=\"1.0\" encoding=\"US-ASCII\"?><request client
> > = \"client"+i+"\" action = \"action"+i+"\"><parameter name =
> > \"name"+i+"\">My Name"+i+"</parameter></request> ";
> >
> > Call call = new Call();
> > call.setTargetObjectURI("urn:Connector");
> > call.setMethodName("sendRequest");
> > call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
> > Vector params = new Vector();
> > params.addElement(new org.apache.soap.rpc.Parameter("sXML",
> > String.class, sXML, null));
> >
> > call.setParams(params);
> >
> > (new TestThread(call, url)).start();
> > }
> > }
> > }
> >
> >
> > public class TestThread extends Thread
> > {
> > Call testCall = null;
> > URL url = null;
> >
> > public TestThread(Call testCall, URL url)
> > {
> > this.testCall = testCall;
> > this.url = url;
> > }
> >
> > public void run()
> > {
> > try {
> > org.apache.soap.rpc.Response resp = testCall.invoke(url, "");
> >
> > if (resp.generatedFault())
> > {
> > Fault fault = resp.getFault();
> > System.out.println(this.getName() + "Fault Code = " +
> > fault.getFaultCode());
> > System.out.println(this.getName() + "Fault String = " +
> > fault.getFaultString());
> > }
> > else
> > {
> > org.apache.soap.rpc.Parameter result = resp.getReturnValue();
> > String res = result.toString();
> > Object obj = result.getValue();
> > String resp2 = obj.toString();
> > System.out.println(this.getName()+" - Result: "+resp2);
> > }
> > }
> > catch (Exception e)
> > {
> > System.out.println(this.getName() + " :Error! - " + e.getMessage());
> > }
> > }
> > }
> >
> > , and I'm getting the following exception for most of the Threads (30 out of
> > 50):
> >
> > Thread-i Error opening socket: Connection refused: connect
> >
> > Does anyone explain me why am I getting this? Is it because SOAP can only
> > handle about 20 http connections?
> >
> > Tiago Fernandes Thomaz
> >
>
>
Re: Heavy loads on SOAP RPC
Posted by Scott Nichol <sn...@scottnichol.com>.
Also note that if you use a Microsoft OS, you will be limited to 10 queued
connections unless you run the Server, Advanced Server, etc., version of the OS.
Scott
----- Original Message -----
From: "Scott Nichol" <sn...@scottnichol.com>
To: <so...@xml.apache.org>
Sent: Monday, April 22, 2002 8:09 AM
Subject: Re: Heavy loads on SOAP RPC
> The Web server and/or servlet container against which you are testing probably
> has a limit set for the number of connections it will queue. In Tomcat 3.2.1,
> for example, server.xml has the "backlog" parameter for a Connector:
>
> <!-- Normal HTTP -->
> <Connector className="org.apache.tomcat.service.PoolTcpConnector">
> <Parameter name="handler"
> value="org.apache.tomcat.service.http.HttpConnectionHandler"/>
> <Parameter name="port"
> value="8080"/>
> <Parameter name="backlog" value="100"/>
> </Connector>
>
> In Tomcat 4.0.1, the Connector has an acceptCount attribute:
>
> <!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
> <Connector className="org.apache.catalina.connector.http.HttpConnector"
> port="8080" minProcessors="5" maxProcessors="75"
> enableLookups="true" redirectPort="8443"
> acceptCount="10" debug="0" connectionTimeout="60000"/>
>
> Scott Nichol
>
> ----- Original Message -----
> From: "Tiago Fernandes Thomaz" <ti...@optimus.pt>
> To: <so...@xml.apache.org>
> Sent: Monday, April 22, 2002 5:58 AM
> Subject: Heavy loads on SOAP RPC
>
>
> > Hi,
> >
> > I'm facing some trouble concerning heavy loads on soap rpc.
> > I coded a soap client that simulates several clients with a Thread
> > implementation.
> > My snippet code is:
> >
> > public class SOAPClient
> > {
> > public static void main (String[] args) throws Exception
> > {
> > URL url = new URL(args[0]);
> > String sXML = null;
> >
> > for (int i = 0; i < 50; i++)
> > {
> > sXML = "<?xml version=\"1.0\" encoding=\"US-ASCII\"?><request client
> > = \"client"+i+"\" action = \"action"+i+"\"><parameter name =
> > \"name"+i+"\">My Name"+i+"</parameter></request> ";
> >
> > Call call = new Call();
> > call.setTargetObjectURI("urn:Connector");
> > call.setMethodName("sendRequest");
> > call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
> > Vector params = new Vector();
> > params.addElement(new org.apache.soap.rpc.Parameter("sXML",
> > String.class, sXML, null));
> >
> > call.setParams(params);
> >
> > (new TestThread(call, url)).start();
> > }
> > }
> > }
> >
> >
> > public class TestThread extends Thread
> > {
> > Call testCall = null;
> > URL url = null;
> >
> > public TestThread(Call testCall, URL url)
> > {
> > this.testCall = testCall;
> > this.url = url;
> > }
> >
> > public void run()
> > {
> > try {
> > org.apache.soap.rpc.Response resp = testCall.invoke(url, "");
> >
> > if (resp.generatedFault())
> > {
> > Fault fault = resp.getFault();
> > System.out.println(this.getName() + "Fault Code = " +
> > fault.getFaultCode());
> > System.out.println(this.getName() + "Fault String = " +
> > fault.getFaultString());
> > }
> > else
> > {
> > org.apache.soap.rpc.Parameter result = resp.getReturnValue();
> > String res = result.toString();
> > Object obj = result.getValue();
> > String resp2 = obj.toString();
> > System.out.println(this.getName()+" - Result: "+resp2);
> > }
> > }
> > catch (Exception e)
> > {
> > System.out.println(this.getName() + " :Error! - " + e.getMessage());
> > }
> > }
> > }
> >
> > , and I'm getting the following exception for most of the Threads (30 out of
> > 50):
> >
> > Thread-i Error opening socket: Connection refused: connect
> >
> > Does anyone explain me why am I getting this? Is it because SOAP can only
> > handle about 20 http connections?
> >
> > Tiago Fernandes Thomaz
> >
>
>
Re: Heavy loads on SOAP RPC
Posted by Scott Nichol <sn...@scottnichol.com>.
The Web server and/or servlet container against which you are testing probably
has a limit set for the number of connections it will queue. In Tomcat 3.2.1,
for example, server.xml has the "backlog" parameter for a Connector:
<!-- Normal HTTP -->
<Connector className="org.apache.tomcat.service.PoolTcpConnector">
<Parameter name="handler"
value="org.apache.tomcat.service.http.HttpConnectionHandler"/>
<Parameter name="port"
value="8080"/>
<Parameter name="backlog" value="100"/>
</Connector>
In Tomcat 4.0.1, the Connector has an acceptCount attribute:
<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
<Connector className="org.apache.catalina.connector.http.HttpConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="60000"/>
Scott Nichol
----- Original Message -----
From: "Tiago Fernandes Thomaz" <ti...@optimus.pt>
To: <so...@xml.apache.org>
Sent: Monday, April 22, 2002 5:58 AM
Subject: Heavy loads on SOAP RPC
> Hi,
>
> I'm facing some trouble concerning heavy loads on soap rpc.
> I coded a soap client that simulates several clients with a Thread
> implementation.
> My snippet code is:
>
> public class SOAPClient
> {
> public static void main (String[] args) throws Exception
> {
> URL url = new URL(args[0]);
> String sXML = null;
>
> for (int i = 0; i < 50; i++)
> {
> sXML = "<?xml version=\"1.0\" encoding=\"US-ASCII\"?><request client
> = \"client"+i+"\" action = \"action"+i+"\"><parameter name =
> \"name"+i+"\">My Name"+i+"</parameter></request> ";
>
> Call call = new Call();
> call.setTargetObjectURI("urn:Connector");
> call.setMethodName("sendRequest");
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
> Vector params = new Vector();
> params.addElement(new org.apache.soap.rpc.Parameter("sXML",
> String.class, sXML, null));
>
> call.setParams(params);
>
> (new TestThread(call, url)).start();
> }
> }
> }
>
>
> public class TestThread extends Thread
> {
> Call testCall = null;
> URL url = null;
>
> public TestThread(Call testCall, URL url)
> {
> this.testCall = testCall;
> this.url = url;
> }
>
> public void run()
> {
> try {
> org.apache.soap.rpc.Response resp = testCall.invoke(url, "");
>
> if (resp.generatedFault())
> {
> Fault fault = resp.getFault();
> System.out.println(this.getName() + "Fault Code = " +
> fault.getFaultCode());
> System.out.println(this.getName() + "Fault String = " +
> fault.getFaultString());
> }
> else
> {
> org.apache.soap.rpc.Parameter result = resp.getReturnValue();
> String res = result.toString();
> Object obj = result.getValue();
> String resp2 = obj.toString();
> System.out.println(this.getName()+" - Result: "+resp2);
> }
> }
> catch (Exception e)
> {
> System.out.println(this.getName() + " :Error! - " + e.getMessage());
> }
> }
> }
>
> , and I'm getting the following exception for most of the Threads (30 out of
> 50):
>
> Thread-i Error opening socket: Connection refused: connect
>
> Does anyone explain me why am I getting this? Is it because SOAP can only
> handle about 20 http connections?
>
> Tiago Fernandes Thomaz
>
Re: Heavy loads on SOAP RPC
Posted by Scott Nichol <sn...@scottnichol.com>.
The Web server and/or servlet container against which you are testing probably
has a limit set for the number of connections it will queue. In Tomcat 3.2.1,
for example, server.xml has the "backlog" parameter for a Connector:
<!-- Normal HTTP -->
<Connector className="org.apache.tomcat.service.PoolTcpConnector">
<Parameter name="handler"
value="org.apache.tomcat.service.http.HttpConnectionHandler"/>
<Parameter name="port"
value="8080"/>
<Parameter name="backlog" value="100"/>
</Connector>
In Tomcat 4.0.1, the Connector has an acceptCount attribute:
<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
<Connector className="org.apache.catalina.connector.http.HttpConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="60000"/>
Scott Nichol
----- Original Message -----
From: "Tiago Fernandes Thomaz" <ti...@optimus.pt>
To: <so...@xml.apache.org>
Sent: Monday, April 22, 2002 5:58 AM
Subject: Heavy loads on SOAP RPC
> Hi,
>
> I'm facing some trouble concerning heavy loads on soap rpc.
> I coded a soap client that simulates several clients with a Thread
> implementation.
> My snippet code is:
>
> public class SOAPClient
> {
> public static void main (String[] args) throws Exception
> {
> URL url = new URL(args[0]);
> String sXML = null;
>
> for (int i = 0; i < 50; i++)
> {
> sXML = "<?xml version=\"1.0\" encoding=\"US-ASCII\"?><request client
> = \"client"+i+"\" action = \"action"+i+"\"><parameter name =
> \"name"+i+"\">My Name"+i+"</parameter></request> ";
>
> Call call = new Call();
> call.setTargetObjectURI("urn:Connector");
> call.setMethodName("sendRequest");
> call.setEncodingStyleURI("http://schemas.xmlsoap.org/soap/encoding/");
> Vector params = new Vector();
> params.addElement(new org.apache.soap.rpc.Parameter("sXML",
> String.class, sXML, null));
>
> call.setParams(params);
>
> (new TestThread(call, url)).start();
> }
> }
> }
>
>
> public class TestThread extends Thread
> {
> Call testCall = null;
> URL url = null;
>
> public TestThread(Call testCall, URL url)
> {
> this.testCall = testCall;
> this.url = url;
> }
>
> public void run()
> {
> try {
> org.apache.soap.rpc.Response resp = testCall.invoke(url, "");
>
> if (resp.generatedFault())
> {
> Fault fault = resp.getFault();
> System.out.println(this.getName() + "Fault Code = " +
> fault.getFaultCode());
> System.out.println(this.getName() + "Fault String = " +
> fault.getFaultString());
> }
> else
> {
> org.apache.soap.rpc.Parameter result = resp.getReturnValue();
> String res = result.toString();
> Object obj = result.getValue();
> String resp2 = obj.toString();
> System.out.println(this.getName()+" - Result: "+resp2);
> }
> }
> catch (Exception e)
> {
> System.out.println(this.getName() + " :Error! - " + e.getMessage());
> }
> }
> }
>
> , and I'm getting the following exception for most of the Threads (30 out of
> 50):
>
> Thread-i Error opening socket: Connection refused: connect
>
> Does anyone explain me why am I getting this? Is it because SOAP can only
> handle about 20 http connections?
>
> Tiago Fernandes Thomaz
>