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HttpMethodDirectory executeWithRetry and SSLProtocolException in Java

I am using httpclient-3.0 library to parse data to cloud. When I run the application on my local machine (Windows 10), it works fine and the data gets parsed to the server and I receive success response, but when I deployed it on our server which runs on Windows server 2012 R2, it throws below error. I have used the same JDK as well I tried many ways like adding -Djdk.tls.client.protocols="TLSv1,TLSv1.1,TLSv1.2" in my java.security jdk file, but still the issue is not resolved.
Here is my code
PostMethod post = new PostMethod(apiUrl);
post.setParameter("authtoken", authToken);
post.setParameter("dateFormat", dateTimeFormat);
post.setParameter("data", emloyeesAttendanceJsonArr.toString());
HttpClient httpclient = new HttpClient();
// Configuring proxy
httpclient.getHostConfiguration().setProxy("**.**.**.**", ****);
try {
long timeTrace = System.currentTimeMillis();
int result = httpclient.executeMethod(post);
System.out.println(">> HTTP Response status code: "+result);
System.out.println(">> Response Time: "+(System.currentTimeMillis() - timeTrace));
.......
.......
.......
}
I appreciate any quick help and guidelines.
Here is the error I get
Mar 11, 2020 4:23:08 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: I/O exception (javax.net.ssl.SSLProtocolException) caught when processing
request: Connection reset
Mar 11, 2020 4:23:08 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: Retrying request
Mar 11, 2020 4:23:23 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: I/O exception (javax.net.ssl.SSLProtocolException) caught when processing
request: Connection reset
Mar 11, 2020 4:23:23 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: Retrying request
Mar 11, 2020 4:23:38 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: I/O exception (javax.net.ssl.SSLProtocolException) caught when processing
request: Connection reset
Mar 11, 2020 4:23:38 PM org.apache.commons.httpclient.HttpMethodDirector execute
WithRetry
INFO: Retrying request
javax.net.ssl.SSLProtocolException: Connection reset
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:126)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.ja
va:321)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.ja
va:264)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.ja
va:259)
at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:137)
at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:11
52)
at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocke
tImpl.java:1063)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl
.java:402)
at java.base/sun.security.ssl.SSLSocketImpl.ensureNegotiated(SSLSocketIm
pl.java:716)
at java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSoc
ketImpl.java:970)
at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStre
am.java:81)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.jav
a:142)
at java.base/java.io.FilterOutputStream.flush(FilterOutputStream.java:15
3)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequ
estBody(EntityEnclosingMethod.java:502)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodB
ase.java:1973)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.j
ava:993)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(Htt
pMethodDirector.java:397)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMe
thodDirector.java:170)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.jav
a:396)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.jav
a:324)
at af.aib.etl.AttendanceETL.fetchAndParseAttendanceRecord(AttendanceETL.
java:99)
at af.aib.attendance.ApplicationStartPoint.main(ApplicationStartPoint.ja
va:28)
Caused by: java.net.SocketException: Connection reset
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:186)
at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140)
at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRe
cord.java:448)
at java.base/sun.security.ssl.SSLSocketInputRecord.decode(SSLSocketInput
Record.java:165)
at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:108)

The local proxy and the server proxy were different that is why it was running fine on my local machine but not on the server, once I changed the proxy to the specific proxy which server was using then the application was working fine.

Couchbase Java API getting ConnectException

I am creating a dummy JSON and trying to query it. I am doing that using JAVA. The code is as follows :-
import static com.couchbase.client.java.query.Select.select;
import static com.couchbase.client.java.query.dsl.Expression.s;
import static com.couchbase.client.java.query.dsl.Expression.x;
import com.couchbase.client.java.Bucket;
import com.couchbase.client.java.Cluster;
import com.couchbase.client.java.CouchbaseCluster;
import com.couchbase.client.java.document.JsonDocument;
import com.couchbase.client.java.document.json.JsonObject;
import com.couchbase.client.java.env.CouchbaseEnvironment;
import com.couchbase.client.java.env.DefaultCouchbaseEnvironment;
import com.couchbase.client.java.query.Query;
import com.couchbase.client.java.query.Statement;
public class AccessData {
public static void main(String[] args) {
CouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder()
.queryEnabled(true)
.build();
Cluster cluster = CouchbaseCluster.create(env, "127.0.0.1");
Bucket bucket = cluster.openBucket("default", "");
JsonObject testDataBlog = JsonObject.create().put("type", "blog").put("data", "blablabla");
JsonObject testDataComment = JsonObject.create().put("type", "comment").put("data", "ho hey");
bucket.upsert(JsonDocument.create("testDp4Blog", testDataBlog));
bucket.upsert(JsonDocument.create("testDp4Comment", testDataComment));
Statement statement = select("*").from("default").where(x("type").eq(s("blog")));
Query createIndex = Query.simple("CREATE PRIMARY INDEX ON default");
bucket.query(createIndex);
Statement withPlaceholders = select("*").from("default").where(x("type").eq(x("$1")));
}
}
On executing the above code, I am getting the following error :-
Apr 13, 2016 10:02:33 PM com.couchbase.client.core.CouchbaseCore <init>
INFO: CoreEnvironment: {sslEnabled=false, sslKeystoreFile='null', sslKeystorePassword='null', queryEnabled=true, queryPort=8093, bootstrapHttpEnabled=true, bootstrapCarrierEnabled=true, bootstrapHttpDirectPort=8091, bootstrapHttpSslPort=18091, bootstrapCarrierDirectPort=11210, bootstrapCarrierSslPort=11207, ioPoolSize=4, computationPoolSize=4, responseBufferSize=16384, requestBufferSize=16384, kvServiceEndpoints=1, viewServiceEndpoints=1, queryServiceEndpoints=1, ioPool=NioEventLoopGroup, coreScheduler=CoreScheduler, packageNameAndVersion=couchbase-java-client/2.1.0-dp2 (git: 2.1.0-dp2), dcpEnabled=false, retryStrategy=BestEffort, maxRequestLifetime=75000, retryDelay=com.couchbase.client.core.time.ExponentialDelay#5b80350b, reconnectDelay=com.couchbase.client.core.time.ExponentialDelay#5d6f64b1, observeIntervalDelay=com.couchbase.client.core.time.ExponentialDelay#32a1bec0}
Apr 13, 2016 10:02:36 PM com.couchbase.client.core.endpoint.AbstractEndpoint$2 operationComplete
WARNING: [null][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 32 MILLISECONDS:
java.net.ConnectException: Connection refused: no further information: /127.0.0.1:11210
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at com.couchbase.client.deps.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:208)
at com.couchbase.client.deps.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at com.couchbase.client.deps.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
Apr 13, 2016 10:02:37 PM com.couchbase.client.core.endpoint.AbstractEndpoint$2 operationComplete
WARNING: [null][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 32 MILLISECONDS:
java.net.ConnectException: Connection refused: no further information: /127.0.0.1:11210
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at com.couchbase.client.deps.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:208)
at com.couchbase.client.deps.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at com.couchbase.client.deps.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
Apr 13, 2016 10:02:38 PM com.couchbase.client.core.endpoint.AbstractEndpoint$2 operationComplete
WARNING: [null][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 32 MILLISECONDS:
java.net.ConnectException: Connection refused: no further information: /127.0.0.1:11210
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at com.couchbase.client.deps.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:208)
at com.couchbase.client.deps.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at com.couchbase.client.deps.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
Apr 13, 2016 10:02:39 PM com.couchbase.client.core.endpoint.AbstractEndpoint$2 operationComplete
WARNING: [null][KeyValueEndpoint]: Could not connect to endpoint, retrying with delay 32 MILLISECONDS:
java.net.ConnectException: Connection refused: no further information: /127.0.0.1:11210
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:712)
at com.couchbase.client.deps.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:208)
at com.couchbase.client.deps.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at com.couchbase.client.deps.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at com.couchbase.client.deps.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
at com.couchbase.client.deps.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "main" java.lang.RuntimeException: java.util.concurrent.TimeoutException
at com.couchbase.client.java.util.Blocking.blockForSingle(Blocking.java:93)
at com.couchbase.client.java.CouchbaseCluster.openBucket(CouchbaseCluster.java:108)
at com.couchbase.client.java.CouchbaseCluster.openBucket(CouchbaseCluster.java:99)
at com.couchbase.client.java.CouchbaseCluster.openBucket(CouchbaseCluster.java:89)
at AccessData.main(AccessData.java:21)
Caused by: java.util.concurrent.TimeoutException
... 5 more
Any clues to fix it ?

It looks like you're using pretty outdated versions of the server and the SDK, and developer preview versions!
I'd strongly advise you to do a fresh clean install of Couchbase Server 4.1.0 and to use the Java SDK in it latest version, 2.2.7. A few things will have changed:
you won't need the queryEnabled(true) when configuring the environment
Query has been renamed N1qlQuery
The error you get indicates that when the client tries to connect on localhost, nothing answers (at least on port 11210). Can you check that the node is correctly up in the web console?
Once again, prefer installing Couchbase with 4.1.0. If you don't have any particular data to keep in your current instance, do a full reinstall (by removing the current installation first. see here).

Apache Cayenne: NullPointerException when commitChanges

I'm trying commitChanges, but catch java.lang.NullPointerException. log:
...
INFO: --- transaction started.
авг 04, 2015 12:33:59 PM org.apache.cayenne.access.dbsync.CreateIfNoSchemaStrategy processSchemaUpdate
INFO: Full or partial schema detected, skipping tables creation
авг 04, 2015 12:33:59 PM org.apache.cayenne.log.CommonsJdbcEventLogger logQuery
INFO: SELECT NEXT_ID FROM AUTO_PK_SUPPORT WHERE TABLE_NAME = 'ARTIST'
авг 04, 2015 12:33:59 PM org.apache.cayenne.log.CommonsJdbcEventLogger logSelectCount
INFO: === returned 1 row. - took 16 ms.
авг 04, 2015 12:33:59 PM org.apache.cayenne.log.CommonsJdbcEventLogger logQueryError
INFO: *** error.
java.lang.NullPointerException
at com.relx.jdbc.jdbc2.LinterStatementImpl.getUpdateCount(LinterStatementImpl.java:419)
at org.apache.cayenne.access.jdbc.SQLTemplateAction.execute(SQLTemplateAction.java:190)
at org.apache.cayenne.access.jdbc.SQLTemplateAction.performAction(SQLTemplateAction.java:124)
at org.apache.cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:87)
at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:280)
at org.apache.cayenne.dba.JdbcPkGenerator.longPkFromDatabase(JdbcPkGenerator.java:310)
at org.apache.cayenne.dba.JdbcPkGenerator.generatePk(JdbcPkGenerator.java:268)
at org.apache.cayenne.access.DataDomainInsertBucket.createPermIds(DataDomainInsertBucket.java:171)
at org.apache.cayenne.access.DataDomainInsertBucket.appendQueriesInternal(DataDomainInsertBucket.java:76)
at org.apache.cayenne.access.DataDomainSyncBucket.appendQueries(DataDomainSyncBucket.java:78)
at org.apache.cayenne.access.DataDomainFlushAction.preprocess(DataDomainFlushAction.java:188)
at org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:144)
at org.apache.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:853)
at org.apache.cayenne.access.DataDomain$2.transform(DataDomain.java:817)
at org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java:877)
at org.apache.cayenne.access.DataDomain.onSyncNoFilters(DataDomain.java:814)
at org.apache.cayenne.access.DataDomain$DataDomainSyncFilterChain.onSync(DataDomain.java:1031)
at org.apache.cayenne.access.DataDomain.onSync(DataDomain.java:785)
at org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:817)
at org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:756)
at CayenneTest2.main(CayenneTest2.java:61)
Table AUTO_PK_SUPPORT was created and filled Apache Cayenne.
Why throw the Exception?

From the stack trace you are working with Cayenne v. 3.1. The code in question is here. Cayenne SQLTemplateAction checks whether the result of the query is a ResultSet and with the answer being "no", assumes the result is an update count. So it tries to read the update count on line 190:
int updateCount = statement.getUpdateCount();
Somehow the underlying statement object (LinterStatementImpl) is not happy about that. I don't have access to source code of the Linter DB driver, so I can't say what exactly is wrong, but the driver is not behaving the way Cayenne expects it to.
Perhaps Linter is special enough to warrant its own Cayenne DbAdapter (??) Feel free to join Cayenne dev mailing list to discuss what it takes to write one.

Selenium occasional UnreachableBrowserException

I am trying to access several websites by using Selenium in Java. Occasionally, I get an UnreachableBrowserException. I have read many threads about this error but it seems like there are many different causes of the error. I get the error about 1% of the time when I attempt to access a new page and I cannot find any similarities between occurrences. I currently am using Firefox, however I have also tried Internet Explorer and experienced similar errors. I am only opening one page at a time and have tried using the same window and completely quitting the driver before trying to access another page and either way the error still occurs. It is important to note I do not always get this error sometimes my code can run without this occurring. Here is the error message:
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}- http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to {}->http://127.0.0.1:7055: Permission denied: connect
Jan 12, 2015 10:39:40 PM org.apache.http.impl.execchain.RetryExec execute
INFO: Retrying request to {}->http://127.0.0.1:7055
Exception in thread "main" org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
Build info: version: '2.44.0', revision: '76d78cf', time: '2014-10-23 20:03:00'
System info: host: '****', ip: '**.*.*.*', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_60'
Driver info: driver.version: RemoteWebDriver
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:593)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:614)
at org.openqa.selenium.remote.RemoteWebDriver.quit(RemoteWebDriver.java:468)
at scrape.Scraper.killInstance(Scraper.java:162)
at scrape.Updater.main(Updater.java:93)
Caused by: java.net.SocketException: Permission denied: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:72)
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:123)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:318)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.openqa.selenium.remote.HttpCommandExecutor.fallBackExecute(HttpCommandExecutor.java:215)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:184)
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.execute(NewProfileExtensionConnection.java:165)
at org.openqa.selenium.firefox.FirefoxDriver$LazyCommandExecutor.execute(FirefoxDriver.java:362)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:572)
... 4 more
How can I prevent this error or at least catch the error and deal with it effectively?

UnreachableBrowserExceptions can happen for multiple reasons - the most obvious is that the browser was closed, either in code or physically in the GUI, and then the code attempted to access it. Often, like in your case, they are caused by socket errors. This can mean, again, multiple things - your program tried to open too many sockets, it couldn't connect to a remote website, and others.
What I would suggest doing in a situation like this is waiting a short time, then retrying to see if the exception is still thrown. Sometimes these situations resolve themselves and your program can recover.
Here is some code to do that. It keeps retrying as long as the UnreachableBrowserException is thrown and the number of retries is below some limit that you set. If it hits the retry limit and the exception is still being thrown, it closes the browser and restarts it, resetting the retry count to 0. There is also a restart counter, to make sure that if for some reason restarting the browser doesn't help, you don't loop endlessly through running code -> exception -> wait -> retry -> hit retry limit, restart browser -> run code -> exception. Here, exceeding the restart limit (or successfully accessing the browser) will break out of the loop.
If you want more help, let me know.Hope this is helpful!
WebDriver driver = new FirefoxDriver(); //or whatever you're using
boolean worked = false;
int numredos = 0;
final int REDO_LIMIT = 3; //or however many times you want to retry before giving up
final int RESTART_LIMIT = 3; //or however many times you want to restart the browser b/f terminating
int numrestarts = 0;
boolean restart = false;
do
{
try{
if(restart)
{
driver = new FirefoxDriver();
numrestarts++;
}
//RUN YOUR BROWSER CODE HERE
worked = true;
}
//if the browser becomes unreachable (probably b/c of a socket issue),
// write the error to the log and then sleep for 10 seconds
//if we've already retried the set limit number of times, restart the browser and try again
catch (UnreachableBrowserException ube)
{
worked = false;
if(numredos >= REDO_LIMIT)
{
//if you've already restarted the browser too many times, it will set it to null
//and return an error code. If not, it will set the restart flag so it will be restarted on the next iteration.
//try quitting. If it can't do it, it's already dead; just set it to null
//(set it to null either way, just in case)
try
{
driver.quit();
}
catch(Exception j)
{
errorwriter.println(j);
}
driver = null;
if(numrestarts < RESTART_LIMIT)
{
//log that you're restarting the driver (not coded here), then set the restart flag to true. This will cause the browser to be restarted after falling out of the catch block
numredos = 0;
restart = true;
}
}
else
{
//print details of the exception to the error file
errorfile.println("\n\n\n");
//timestamp, and some exception details - you can decide which you want
errorfile.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(Calendar.getInstance().getTime()));
errorfile.println(s.getClass());
errorfile.println(s.getMessage());
errorfile.println("Cause: " + s.getCause());
errorfile.flush();
//now sleep for some number of seconds - here 10
try
{
TimeUnit.SECONDS.sleep(10);
}
catch(InterruptedException e)
{
System.out.println("waiting after socket crash interrupted");
}
numredos++;
}
}
}while(!worked && numredos <= REDO_LIMIT && numrestarts <= RESTART_LIMIT);

Jade DispatcherException problem when using remote Containers

I have two virtual machines in a private
cloud, and I want to execute Jade both of them. They can access each
other without problems. I started in one of them the Main Container, and
in the other a Container which would connect to the main. However, I get
a Dispatcher exception when this connection tries to take place:
--------
INFO: Adding node <Container-1> to the platform
Jun 22, 2011 12:54:34 PM jade.core.messaging.MessagingService
clearCachedSlice
INFO: Clearing cache
Jun 22, 2011 12:54:34 PM jade.core.messaging.MessagingService
$CommandTargetSink handleNewSlice
WARNING: Error notifying current information to new Messaging-Slice
Container-1
jade.core.IMTPException: Dispatcher error [nested
jade.imtp.leap.DispatcherException: DispatcherException in remote site.
No skeleton for object-id 3447152]
at jade.imtp.leap.NodeStub.accept(NodeStub.java:91)
at jade.core.messaging.MessagingProxy.addRoute(MessagingProxy.java:257)
at jade.core.messaging.MessagingService
$CommandTargetSink.handleNewSlice(MessagingService.java:993)
at jade.core.messaging.MessagingService
$CommandTargetSink.consume(MessagingService.java:906)
at jade.core.CommandProcessor
$SinksFilter.accept(CommandProcessor.java:253)
at jade.core.Filter.filter(Filter.java:89)
at jade.core.Filter.filter(Filter.java:90)
at jade.core.Filter.filter(Filter.java:90)
at
jade.core.CommandProcessor.processIncoming(CommandProcessor.java:229)
at
jade.core.PlatformManagerImpl.issueNewSliceCommand(PlatformManagerImpl.java:744)
at
jade.core.PlatformManagerImpl.localAddSlice(PlatformManagerImpl.java:445)
at
jade.core.PlatformManagerImpl.localAddNode(PlatformManagerImpl.java:293)
at jade.core.PlatformManagerImpl.addNode(PlatformManagerImpl.java:245)
at
jade.imtp.leap.PlatformManagerSkel.executeCommand(PlatformManagerSkel.java:73)
at jade.imtp.leap.Skeleton.processCommand(Skeleton.java:51)
at
jade.imtp.leap.CommandDispatcher.handleCommand(CommandDispatcher.java:949)
at jade.imtp.leap.JICP.JICPServer
$ConnectionHandler.run(JICPServer.java:439)
Nested Exception:
jade.imtp.leap.DispatcherException: DispatcherException in remote site.
No skeleton for object-id 3447152
at
jade.imtp.leap.CommandDispatcher.checkRemoteExceptions(CommandDispatcher.java:516)
at
jade.imtp.leap.CommandDispatcher.dispatchSerializedCommand(CommandDispatcher.java:418)
at
jade.imtp.leap.CommandDispatcher.dispatchCommand(CommandDispatcher.java:343)
at jade.imtp.leap.NodeStub.accept(NodeStub.java:83)
at jade.core.messaging.MessagingProxy.addRoute(MessagingProxy.java:257)
at jade.core.messaging.MessagingService
$CommandTargetSink.handleNewSlice(MessagingService.java:993)
at jade.core.messaging.MessagingService
$CommandTargetSink.consume(MessagingService.java:906)
at jade.core.CommandProcessor
$SinksFilter.accept(CommandProcessor.java:253)
at jade.core.Filter.filter(Filter.java:89)
at jade.core.Filter.filter(Filter.java:90)
at jade.core.Filter.filter(Filter.java:90)
at
jade.core.CommandProcessor.processIncoming(CommandProcessor.java:229)
at
jade.core.PlatformManagerImpl.issueNewSliceCommand(PlatformManagerImpl.java:744)
at
jade.core.PlatformManagerImpl.localAddSlice(PlatformManagerImpl.java:445)
at
jade.core.PlatformManagerImpl.localAddNode(PlatformManagerImpl.java:293)
at jade.core.PlatformManagerImpl.addNode(PlatformManagerImpl.java:245)
at
jade.imtp.leap.PlatformManagerSkel.executeCommand(PlatformManagerSkel.java:73)
at jade.imtp.leap.Skeleton.processCommand(Skeleton.java:51)
at
jade.imtp.leap.CommandDispatcher.handleCommand(CommandDispatcher.java:949)
at jade.imtp.leap.JICP.JICPServer
$ConnectionHandler.run(JICPServer.java:439)
Jun 22, 2011 12:54:34 PM jade.core.PlatformManagerImpl$1 nodeAdded
INFO: --- Node <Container-1> ALIVE ---
Jun 22, 2011 12:54:34 PM
jade.core.nodeMonitoring.BlockingNodeFailureMonitor run
INFO: PING from node Container-1 exited with exception. Dispatcher error
[nested jade.imtp.leap.DispatcherException: DispatcherException in
remote site. No skeleton for object-id 3447152]
Jun 22, 2011 12:54:34 PM jade.core.PlatformManagerImpl$1 nodeUnreachable
WARNING: --- Node <Container-1> UNREACHABLE ---
Jun 22, 2011 12:54:34 PM jade.core.PlatformManagerImpl
removeTerminatedNode
INFO: --- Node <Container-1> TERMINATED ---
Jun 22, 2011 12:54:34 PM jade.core.messaging.MessagingService
clearCachedSlice
---------
In the other node I get the following:
--------
Jun 22, 2011 12:55:35 PM jade.core.AgentContainerImpl joinPlatform
SEVERE: Some problem occurred while joining agent platform.
jade.core.ServiceException: An error occurred during service booting
[nested java.lang.NullPointerException]
at
jade.core.AgentContainerImpl.bootAllServices(AgentContainerImpl.java:465)
at jade.core.AgentContainerImpl.startNode(AgentContainerImpl.java:408)
at
jade.core.AgentContainerImpl.joinPlatform(AgentContainerImpl.java:485)
at jade.core.Runtime.createAgentContainer(Runtime.java:133)
at BookBuyTest2.main(BookBuyTest2.java:25)
Exception in thread "main" java.lang.NullPointerException
at BookBuyTest2.main(BookBuyTest2.java:35)
------
Any ideas about what I am doing wrong?
Thank you very much in advance,

The problem was that in the node I put:
local-host:127.0.0.1
This was solved by putting
local-host: <actual IP of the machine\>

To me, this worked
String[] container = {
"-gui",
"-local-host 127.0.0.1",
"-container",
"Agent1:jogo.agents.Agent1;Agent2:jogo.agents.Agent2" // <- Your custom agents
};
Boot.main(container);