todo:
- firefox: doesn't start up after the roaming dialog closed - bug 209880
- don't show conflict again during download, if user already chose
  server version during upload

don't care (for now):
- conflict
  - some files failed, see XXX - update: eh, where was that?
- world gone
  - problem: ddump, xpcom not defined after files done and dialog closed
    solution: close dialog only when done with processing.
    workaround: gTimeout
  - problem: cancel by user in progress dialog: xpconnect errors
    solution: prevent dialog closure (even if cancel pressed) until we're done.
- listing progressmeter doesn't work
- If one file is missing on both server and client and we didn't upload, but
  there is no conflict, we still show one. That's due to that commented-out
  check in compareFiles(). Mind the warning there and fix it.
- no preselection in conflict dialog
- not using statusText for FTP errors (reason 'file not readable' in this case)

Enhance
- better error dialog
- protocols
  - HTTPS
  - LDAP (already done by Sun?)
  - IMAP
- password encrypt?
- no upload at switch profile

roaming urls
 <ftp://user@ftp-server//path/to/dir/>
 <http://user@http-server/path/to/dir/>
 Mind the number of slashes.
 Servers used: wu-FTPd and Apache with mod_roaming.


Feedback
- why do I need to implement nsIDocShellTreeItem for a http xml file *download*?
- onStopRequest (e.g. Request: http://ben:pgpben@http.server.bucksch.org/roaming/ben/listing.xml, StatusCode: NS_OK, HTTPResponse 200) called *before*  the file finished. ftp and http: onStopRequest *before* onStatus(SENDING_TO), but only for the first file

clipboard

undefined.message=Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIURI.password]
undefined.result=2147500037
undefined.name=NS_ERROR_FAILURE
undefined.filename=chrome://sroaming/content/transfer/transfer.js
undefined.lineNumber=225
undefined.columnNumber=4294967295

WARNING: NS_ENSURE_TRUE(!aQualifiedName.IsEmpty()) failed, file ../../../../mozilla/content/base/src/nsNodeInfoManager.cpp, line 287

[4]
onStatus:
  Request: ftp://...
  StatusCode: NET_STATUS_SENDING_TO
  StatusArg: ftp.server.bucksch.org
request to change listing.xml from done (NS_OK) to busy (NET_STATUS_SENDING_TO)
SetProgressStatus(1): listing.xml, busy, NET_STATUS_SENDING_TO
  Setting listing.xml from done to busy