[ https://issues.apache.org/jira/browse/FTPSERVER-250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jiri Kuhn updated FTPSERVER-250: -------------------------------- Attachment: BindExceptionParallelTest.java BindExceptionSerialTest.java ClientTestTemplate.patch > java.net.BindException: Address already in use > ---------------------------------------------- > > Key: FTPSERVER-250 > URL: https://issues.apache.org/jira/browse/FTPSERVER-250 > Project: FtpServer > Issue Type: Bug > Components: Core > Affects Versions: 1.0.0-RC1 > Environment: linux, windows > Reporter: Jiri Kuhn > Attachments: BindExceptionParallelTest.java, > BindExceptionSerialTest.java, ClientTestTemplate.patch > > > I have configured ftp server to use particular interface and port on active > data mode like > <active enabled="true" local-address="127.0.0.1" local-port="2020" > ip-check="true"/> > After that, the server starts to throw java.net.BindException: Address > already in use during second and other data transfer. First data transfer is > always ok. It seems that it has something to do with TIME_WAIT tcp port state > (as it can be seen using netstat utility). > I have created two tests, one for serial execution and one for parallel > execution, see attached files (patch for ClientTestTemplate required) > - serial execution - emulates what I'm doing in command line ftp client (or > any other client), I'm always able to reproduce it on linux, but never on > windows xp sp2 > - parallel execution - emulates situation when more then one data connection > has to be opened in one time, it fails with two clients on linux (but it may > by simple serial execution failure), on windows it fails with three clients > BUT - I have tested the parallel test against proftpd server (fixed data port > 20) with 30 clients and none of them fails. > Are you able to reproduce the behaviour I have observed? > Does anyone with deeper knowledge of java socket programming know if it is > possible to bind a port once and then reuse it for generally unlimited number > of (simultaneous) connections? -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.