Comment #5 on issue 5461 by [email protected]: Error while trying
downloading on clubic.com servers
http://code.google.com/p/chromium/issues/detail?id=5461
I looked into how firefox did the ftp connections, they have the following
command
sequence:
USER <something>
> 331
PASS <something>
> 230
SYST
> 215 Unix type: L8
PWD
> 257 "/" is CWD
TYPE I
> 200 Type okay.
PASV
> 227 Entering Passive Mode
SIZE /temp-clubic-
rx1388/logiciel/jamp-player_jamp_player_4.1.0.5_anglais_270506.exe
> 213 16742799
MDTM /temp-clubic-
rx1388/logiciel/jamp-player_jamp_player_4.1.0.5_anglais_270506.exe
> 213 20090402152624
RETR /temp-clubic-
rx1388/logiciel/jamp-player_jamp_player_4.1.0.5_anglais_270506.exe
> 150 Data connection accepted from <ip>
What Chrome did:
USER <something>
> 331
PASS <something>
> 230
CWD /temp-clubic-
rx1388/logiciel/jamp-player_jamp_player_4.1.0.5_anglais_270506.exe
> 550 That is not a directory.
TYPE A
> 200 Type okay.
PASV
> 227 Entering Passive Mode
LIST /temp-clubic-
rx1388/logiciel/jamp-player_jamp_player_4.1.0.5_anglais_270506.exe
553 Permission denied.
It seems to me the LIST command is causing server to deny us, the actual
method calls
to WinInet were:
1. InternetConnectA
USER and PASS
2. FtpSetCurrentDirectoryA
CWD
3. FtpFindFirstFileA
LIST
4. <connection reset> (Error: 12031)
Since the logic of our FTP code is always assume the URL is a directory
first and
fall back to file it's not a directory. It seems to me always start with
probing the
path with SIZE command is a better idea. But anyway I'll delay fixing this
we have
the new ftp stack.
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