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https://issues.apache.org/jira/browse/NET-650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341887#comment-16341887
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Matthew McGillis commented on NET-650:
--------------------------------------
If InetSocketAddress acts as I have indicated then if someone wants to add the
feature of using a local mapping over a remote mapping they can easily add it
simply by passing the connect the locally mapped name.
InetSocketAddress simply passes IP's through as does the proxy so its easy to
do on top of a InetSocketAddress base.
However without InetSocketAddress we have no way to get a remote name properly
resolved.
So I think this could be very close it would be interesting to see if just
making this InetSocketAddress change in the Common-Net socket code passes all
existing tests. If it does then it fixes this bug at no cost to any existing
functionality.
> IMAPClient over proxy doesn't properly resolve DNS
> --------------------------------------------------
>
> Key: NET-650
> URL: https://issues.apache.org/jira/browse/NET-650
> Project: Commons Net
> Issue Type: Bug
> Components: IMAP
> Affects Versions: 3.6
> Reporter: Matthew McGillis
> Priority: Major
> Attachments: imapproxy.java, imapproxy2.java, socketproxy.java
>
>
> IMAPClient when configured to use a socks proxy is not able to resolve DNS
> names through the proxy.
> See attached sample code, if I use it with:
> {noformat}
> $ java -DsocksProxyHost=localhost -DsocksProxyPort=16003 -cp
> .:./commons-net-3.6.jar imapproxy imap.server.test.com user1 userpass
> connect error: java.net.UnknownHostException: imap.server.test.com: unknown
> error
> {noformat}
> vs if I use it with the appropriate IP:
> {noformat}
> $ java -DsocksProxyHost=localhost -DsocksProxyPort=16003 -cp
> .:./commons-net-3.6.jar imapproxy 10.250.3.127 user1 userpass
> * OK IMAP4rev1 proxy server ready
> IMAP: 10.250.3.127 143
> AAAA LOGIN *******
> AAAA OK [CAPABILITY IMAP4rev1 ACL BINARY CATENATE CHILDREN CONDSTORE ENABLE
> ESEARCH ESORT I18NLEVEL=1 ID IDLE LIST-EXTENDED LIST-STATUS LITERAL+
> LOGIN-REFERRALS MULTIAPPEND NAMESPACE QRESYNC QUOTA RIGHTS=ektx SASL-IR
> SEARCHRES SORT THREAD=ORDEREDSUBJECT UIDPLUS UNSELECT WITHIN XLIST] LOGIN
> completed
> AAAB LOGOUT
> * BYE 10.250.3.127 Zimbra IMAP4rev1 server closing connection
> AAAB OK LOGOUT completed
> {noformat}
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