Closed Bug 52615 Opened 24 years ago Closed 23 years ago

Proxy: FTP does not show proxy auth (when proxy sends 407)


(Core :: Networking: FTP, defect, P3)






(Reporter: Matt.Behrens, Assigned: dougt)




(Keywords: testcase, Whiteboard: fixed on branch)

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; m18) Gecko/20000913
BuildID:    2000091317

FTP-thru-proxy now works, unless you are using a proxy server and said proxy
server requires you to authenticate yourself -- and you have not yet
authenticated for this session.

Reproducible: Always
Steps to Reproduce:
1. start Moz
2. try to go to an FTP url (spinner spins, nothing)
3. go to an HTTP url, enter proxy username/password
4. try to go to an FTP url (success!)

When I sniffed traffic on my machine, I found that if I had not yet entered
proxy credentials, Moz was indeed trying to contact the proxy server but didn't
know what to do with the 407, so it gave up.

[Note: As far as severity goes, I had some trouble deciding.  Obviously there is
a workaround, but that workaround would not be considered acceptable for
deployment of Moz in organizations using proxies that require user
authentication.  I hope I made a fair decision.]
Summary: ftp-thru-proxy does not prompt for authententication → ftp-thru-proxy does not prompt for authentication - are you still seeing this problem on recent builds 
of Mozilla? If so, we'll confirm this bug.

Ever confirmed: true
Yes, it's still an issue with 2000102220 (Win32).
ftp bugs to component:ftp
Assignee: gagan → dougt
Component: Networking → Networking: FTP
Target Milestone: --- → M19
Blocks: 61691
Blocks: 62353
This problem is also happening on the HPUX build, and with the latest Linux
build (2001011008) too.

Steps to reproduce:
1) start browser
2) setup proxy connections in preference to
3) go to URL ftp://username@hostname (e.g.

Result: nothing happens
Expected: a dialog box to enter the password

I'm also seeing this on the Mac.  I'd like to change Platform and OS to All, but
bugzilla ain't letting me.
Keywords: nsbeta1
Target Milestone: --- → mozilla0.9.1
Please set platform, OS ->all Seeing it on Linux too.
Sorry, wasn't paying attention for a bit :-)
OS: Windows NT → All
Hardware: PC → All
Depends on: 76866
Whiteboard: fixed on branch
Fixes checked in.  QA please verify.
Closed: 23 years ago
Resolution: --- → FIXED
Unable to verify with Linux Build ID 2001051508.

Tested on proxy server :

No dialog window prompt for authentication.
Resolution: FIXED → ---
does an auth dialog come up when going to a http site?  If not, than we need to
configure to do auth.

Ben, any thoughts about adding a port that is always for auth testing?  
Closed: 23 years ago23 years ago
Resolution: --- → FIXED
qa to me. is already doing ftp proxy, and it uses auth by default.

Since most people have been using it for http as well, it you need to configure
JUST ftp and not http proxy to get a clean look at the problem. (I've been
trying to file a bug on a similar problem, and if you proxy auth for http,
mozilla seeems to use it for ftp on the same proxy server.)
QA Contact: tever → benc
Tested on proxy server york:3128 which doesn't auth at default. When connecting
to other http or ftp site that requires auth still doesn't prompt auth dialog
proxy auth was not on for ftp URLs, I have fixed that. You can now attempt to
get an ftp URL via

Make sure http proxy is OFF so you don't end up sharing the auth credentials.

Comm 4 - will show auth dialog
mozilla - will not show auth dialog

The reason this happens is the proxy server is returning a 407, but the
ftp+proxy module does not throw up a proxy auth dialog.

Here's my log file, the "407" is the HTTP response - - [15/May/2001:17:58:58 -0700] "GET
HTTP/1.1" 407 271 - - - - 323 209 - - - - FIN - -

With communicator, if you type in the correct username:password, the log file
shows a "200" from the successful connection (Netscape Proxy globs the previous
407's into this record if session was eventual authed successfully). - test [15/May/2001:18:05:44 -0700] "GET HTTP/1.0" 200 117 200 117 - - 351 115 - 115 0 DIRECT

This is a separate (but probably related problem, where HTTP 401's from the
proxy are not handled. See bug: 81110

Based on this new info, do you want me to check a certain build for a fix, or is
this a new problem?
Summary: ftp-thru-proxy does not prompt for authentication → Proxy: FTP does not show proxy auth (when proxy sends 407)
sounds like a new problem.
+testcase - I hacked the proxy functional test to suggest each protocol needs
the auth handlers teseted individually. Right now it is a template of
suggestions + a list of protocols.

Mozilla 0.9.5, allplats
Keywords: testcase
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