[ecf-dev] Random socket-timeout at org.eclipse.ecf.provider.filetransfer

[Dileepa Jayakody <dileepa@xxxxxxxx>]

Hi Guys,

We use equinox p2 as our provisioning platform. We also use ecf.transport to stream remote p2 Repositories.Recently I came across the below error [1] when trying to add a remote P2 repository.  
It complains about a socket time out, at org.eclipse.ecf.provider.filetransfer.retrieve.UrlConnectionRetrieveFileTransfer.getDecompressedStream(UrlConnectionRetrieveFileTransfer.java:542). However this error is thrown within a minute trying to add the repo, so I doubt if it's really due to a socket time out. 
The error is intermittent & can be reproduced on a Windows machine more frequently than on Ubuntu. 

Any idea what's going wrong here?  Could this be dependent on the network configurations of the particular machine or OS (firewall, virus guard etc)? 
Appreciate any thoughts/tips to find the root cause of this.

[1] Error stack-trace
Caused by: org.eclipse.equinox.p2.core.ProvisionException: Unable to read reposi

tory at http://wso2.org/bamboo/artifact/WSO2CARBON-P2REPO/JOB1/build-97/P2-Repo/

p2-repo/content.jar.

        at org.eclipse.equinox.internal.p2.repository.CacheManager.updateCache(C

acheManager.java:359)

        at org.eclipse.equinox.internal.p2.repository.CacheManager.createCache(C

acheManager.java:205)

        at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRep

ositoryFactory.getLocalFile(SimpleMetadataRepositoryFactory.java:66)

        at org.eclipse.equinox.internal.p2.metadata.repository.SimpleMetadataRep

ositoryFactory.load(SimpleMetadataRepositoryFactory.java:88)

        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositor

yManager.factoryLoad(MetadataRepositoryManager.java:57)

        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepository

Manager.loadRepository(AbstractRepositoryManager.java:749)

        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepository

Manager.loadRepository(AbstractRepositoryManager.java:651)

        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositor

yManager.loadRepository(MetadataRepositoryManager.java:96)

        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositor

yManager.loadRepository(MetadataRepositoryManager.java:92)

        at org.wso2.carbon.feature.mgt.core.util.RepositoryUtils.addRepository(R

epositoryUtils.java:74)

        ... 12 more

Caused by: java.net.SocketTimeoutException: Read timed out

        at java.net.SocketInputStream.socketRead0(Native Method)

        at java.net.SocketInputStream.read(SocketInputStream.java:150)

        at java.net.SocketInputStream.read(SocketInputStream.java:121)

        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)

        at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)

        at java.io.BufferedInputStream.read(BufferedInputStream.java:334)

        at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:643)

        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:589)

        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon

nection.java:1319)

        at org.eclipse.ecf.provider.filetransfer.retrieve.UrlConnectionRetrieveF

ileTransfer.getDecompressedStream(UrlConnectionRetrieveFileTransfer.java:542)

        at org.eclipse.ecf.provider.filetransfer.retrieve.UrlConnectionRetrieveF

ileTransfer.openStreams(UrlConnectionRetrieveFileTransfer.java:312)

        at org.eclipse.ecf.provider.filetransfer.retrieve.AbstractRetrieveFileTr

ansfer.sendRetrieveRequest(AbstractRetrieveFileTransfer.java:889)

        at org.eclipse.ecf.provider.filetransfer.retrieve.AbstractRetrieveFileTr

ansfer.sendRetrieveRequest(AbstractRetrieveFileTransfer.java:576)

        at org.eclipse.ecf.provider.filetransfer.retrieve.MultiProtocolRetrieveA

dapter.sendRetrieveRequest(MultiProtocolRetrieveAdapter.java:106)

        at org.eclipse.equinox.internal.p2.transport.ecf.FileReader.sendRetrieve

Request(FileReader.java:349)

        at org.eclipse.equinox.internal.p2.transport.ecf.FileReader.readInto(Fil

eReader.java:295)

        at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.dow

nload(RepositoryTransport.java:87)

        at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.dow

nload(RepositoryTransport.java:137)

        at org.eclipse.equinox.internal.p2.repository.CacheManager.updateCache(C

acheManager.java:333)

        ... 21 more

Thanks,
Dileepa