Re: PB 4.1 - how to FTP without WinInet library ?

From: SergeiR (anonymous_at_discussions.microsoft.com)
Date: 02/06/04 

Date: Fri, 6 Feb 2004 05:59:42 -0800

Hi John!

Thanks for the prompt reply. The source code in the
suggested ftpupdate.cpp file is quite similar to mine, but
with the difference in creating of new, temporary file on
disk first.

We can't do that due to the fact that there is lack of
that disk space on CF on that small device. So I went with
the version similar to what ftpudate.cpp does, but with no
temporary file, just read block after block from FTP
server into a memory buffer, and then, if all went okay,
write file to CF (or overwrite is that's the case).

And this my approach works fine with WinInet. So maybe
Httplite is somewhat different and this doesn't work.

At this moment we don't know yet if management will choose
to pursue this direction further and troubleshoot the
problem with Httplite dll, or divert to another direction
and choose an alternative method ( without FTP).

Best regards
Sergei

>-----Original Message-----
>Hi,
>
>I've looked over your code below and I can't see what's
causing the
>problems. As Mark said, unfortunately HttpLite is
officially unsupported.
>In the future we do planning on actually supporting and
documenting it, but
>we can't presently.
>
>However, we have an application named FtpUpdate that
downloads new images to
>CE devices that uses the FTP functionality of httplite.
It is shipped in
>Platform Builder in %_WINCEROOT%
\public\wceshellfe\oak\FTPUpdate. The only
>suggestion I can give you would be to check out the FTP
specific source code
>in this dir and try to and copy and paste it into your
program and hope that
>that code path makes everything just work.
>
>Hope this helps and good luck!
>
>--
>John Spaith
>Software Design Engineer, Windows CE
>Microsoft Corporation
>
>This posting is provided "AS IS" with no warranties, and
confers no rights.
>You assume all risk for your use. © 2003 Microsoft
Corporation. All rights
>reserved.
>
><anonymous@discussions.microsoft.com> wrote in message
>news:a95f01c3ebe2$f128b920$a501280a@phx.gbl...
>> Hi Mark !
>>
>> Thanks a lot for the tip! It really saves lots of work.
>>
>> I have followed your directions, and quite succeded,
>> but ...
>>
>> So let me check with you whether or not I have made it
>> through.
>>
>> a) my code comments out #include "wininet.h" and replace
>> it with #include "dubinet.h"
>>
>> b)inside dubinet.h file, located at
>> C:\WINCE410\PUBLIC\COMMON\OAK\INC
>>
>> I look for a line with "CESYSGEN IF DUBINET_DUBFTP" and
>> for another line with " "
>>
>> and they are
>>
>> 1173 : // @CESYSGEN IF DUBINET_DUBFTP
>> 1437 : // @CESYSGEN ENDIF
>>
>> so they are both commented out ! Well, delete them
anyway
>> as you direct.
>>
>> c) go to the cesysgen.bat file for my project in
>> C:\WINCE410\PUBLIC\EmCORE_minimal\WINCE410
\Geode\oak\MISC
>> and insert the two lines in the beginning of it, i.e.
line
>> numbers are 54 and 55
>>
>> d)do a full command line rebuild, followed by a
>> RebuildPlatform command from PB 4.1
>>
>> e) observe the appearance of the httplite.dll in the
>> Release build of the project !
>>
>> Looks great ! It is just 69kbytes, very good !
>>
>> f) test the newly build dll.
>>
>> Well, things went wrong here ...
>>
>> LoadLibrary(httplite.dll) - success
>> InternetOpenW()- success
>> InternetConnectW(hInet, v_szServerName,
>>
>> INTERNET_INVALID_PORT_NUMBER,
>> m_tszLoginName, // LPCTSTR lpszUserName
>>
>> m_tszPassword, // LPCTSTR lpszPassword
>> INTERNET_SERVICE_FTP,
>>
>> INTERNET_FLAG_PASSIVE, 0)) - sucess
>>
>> FtpFindFirstFileW(hFTP, v_szSourceName, &FindFileData,
>>
>> INTERNET_FLAG_NO_CACHE_WRITE, 0) - success
>> FtpOpenFileW(hFTP, v_szSourceName, GENERIC_READ,
>> FTP_TRANSFER_TYPE_BINARY |
>> INTERNET_FLAG_RELOAD,
>> 0) - susccess
>> InternetReadFile(hOpen, pBuffer, cBufferSize,
>>
>> &dwBytesRead) - returns success several
>> times, but after several blocks downloaded the number of
>> bytes read is not what was requested. GetLastError()
>> returns 0 ... It only gets a small portion of a file ...
>>
>> can't find where the problem is. Mark, did all the
>> functions from Httplite.dll work well for you ?
>>
>> I have no problems using exact same code with
Wininet.dll.
>> Should the code be different for httplite.dll ??
>>
>> Best regards
>> Sergei
>>
>> >-----Original Message-----
>> >Hey Sergei. Don't go implementing a whole new FTP
client
>> just yet.
>> >
>> >We had the same problem. We have a headless
>> configuration, and we made
>> >heavy use of WinInet in a 2.11 platform. When we moved
>> to 2.12, WinInet
>> >became part of IE. Luckily, we found that the
>> functionality was still
>> >available through "dubinet." Unfortunately, "dubinet"
>> went away with CE
>> >3.0.
>> >
>> >Luckily, it looks like all of that functionality came
>> back in httplite in CE
>> >4.0, and we're actively using it in a product running
CE
>> 4.20. We haven't
>> >had any problems with it yet. The only thing we had to
>> do, at the
>> >recommendation of a Microsoft developer, was make a
>> slight modification to
>> >the file "\public\common\oak\inc\dubinet.h." You need
to
>> remove the two
>> >"CESYSGEN IF DUBINET_DUBFTP" tags, or you won't get
>> proper prototypes for
>> >the FTP functionality. Then, we just added the two
>> following lines to our
>> >cesysgen.bat file:
>> >
>> >set __SYSGEN_HTTPLITE=1
>> >set __SYSGEN_HTTPLITE_FTP=1
>> >
>> >Rebuild, link the "httplite.lib" import library to our
>> app, include
>> >"dubinet.h", and we were rolling.
>> >
>> >I know the modifications to the public\common file
suck,
>> but we couldn't
>> >find a better way, short of redefining all of those
>> prototypes ourselves.
>> >Try it. It works.
>> >
>> >Mark Murawski
>> >Vocollect, Inc.
>> >
>> >"sergeir" <anonymous@discussions.microsoft.com> wrote
in
>> message
>> >news:945401c3eaf2$f6b3ce70$a101280a@phx.gbl...
>> >> Thanks Maxim for the idea. Unless there is another
>> >> solution found ( either some handcraft play around PB
>> or a
>> >> third party library), we could think about it.
>> >>
>> >> You mean by using ws2.dll ( and .lib), right ?
>> >>
>> >> Anyone who are using CE httplite library please
advise !
>> >>
>> >>
>> >> Sincerely
>> >> Sergei
>> >>
>> >> >Implement the FTP protocol yourself on top of
sockets -
>> >> not this huge a task,
>> >> >provided you will need a subset only.
>> >> >Get the appropriate RFC and start coding.
>> >> >
>> >> >--
>> >> >Maxim Shatskih, Windows DDK MVP
>> >> >StorageCraft Corporation
>> >> >maxim@storagecraft.com
>> >> >http://www.storagecraft.com
>> >>
>> >>
>> >> >-----Original Message-----
>> >> >> Is there another way to still use FTP simple
>> functions
>> >> >> available but do not include this huge
WinInet.DLL in
>> >> the
>> >> >> image ?
>> >>
>> >
>> >
>> >.
>> >
>
>
>.
>

Relevant Pages

  • Re: PB 4.1 - how to FTP without WinInet library ?
    ... For httplite, however, ... "sergei" wrote in message ... FTP Server I am communicating with is IIS ... >>CE devices that uses the FTP functionality of httplite. ...
    (microsoft.public.windowsce.platbuilder)
  • Re: PB 4.1 - how to FTP without WinInet library ?
    ... As Mark said, unfortunately HttpLite is officially unsupported. ... CE devices that uses the FTP functionality of httplite. ...
    (microsoft.public.windowsce.platbuilder)
  • Re: PB 4.1 - how to FTP without WinInet library ?
    ... Intel device and FTP server will be Unix machine (that's ... >Even though httplite isn't officially supported, ... confers no rights. ... >>Microsoft Corporation ...
    (microsoft.public.windowsce.platbuilder)
  • Re: PB 4.1 - how to FTP without WinInet library ?
    ... Even though httplite isn't officially supported, I do fix bugs in it when we ... FTP Server I am communicating with is IIS 5.1 on WinXP. ... © 2003 Microsoft Corporation. ... we have an application named FtpUpdate that downloads new images to>CE devices that uses the FTP functionality of httplite. ...
    (microsoft.public.windowsce.platbuilder)