Using httpget$ to retrieve an FTP file

[David Drake]

Is this even possible? I am attempting to use the httpget$ command to retrieve an FTP file, like so:


weather$ = httpget$("ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/KBHM.TXT")

It crashes.  Here is the error report:


Error log timestamp Friday 01/03/20 12:56:52 PM



Runtime error: The parameter is incorrect. ( OS error 16r57 )



Error(Exception)>>defaultAction

Error(Exception)>>activateHandler: <anUndefinedObject>

Error(Exception)>>handle

Error(Exception)>>signal

Error class(Exception class)>>signal: <'The parameter is inc...'>

BasicProgram(Object)>>error: <'The parameter is inc...'>

BasicProgram>>terminateRun: <anError>

[] in BasicProgram>>errorHandlerBlock

ExceptionHandler>>evaluateResponseBlock: <aBlockClosure> for: <anError>

[] in ExceptionHandler>>handle:

ProtectedFrameMarker(BlockClosure)>>setUnwind: <aBlockClosure>

BlockClosure>>invisibleEnsure: <aBlockClosure>

ExceptionHandler>>handle: <anError>

ExceptionHandler>>findHandler: <anError>

Error(Exception)>>activateHandler: <anExceptionHandler>

Error(Exception)>>handle

Error(Exception)>>signal

Error class(Exception class)>>signal: <'The parameter is inc...'>

OperatingSystemInformation(Object)>>osError: <87>

OperatingSystemInformation(Object)>>osError

OperatingSystemInformation>>getErrorMessage: <317>

OperatingSystemInformation(Object)>>osErrorMessage: <317>

OperatingSystemInformation(Object)>>osError: <317>

OperatingSystemInformation(Object)>>osError

OperatingSystemInformation>>getErrorMessage: <12003>

Object class(Object)>>osErrorMessage: <12003>

[] in BasicHttpget class>>using:program:

BasicVariableAssigner>>value

[] in BasicProgram>>begin

ExceptionHandler>>evaluateProtectedBlock: <aBlockClosure>

[] in ExceptionHandler>>activateDuring:

[Chris Iverson]

No, the HTTPGET$() command explicitly operates using HTTP, and will not download FTP files.

[metro]

It's a bit of a hack but you could try creating a batch file and "run" it from your program using wget to retrieve your file
gnuwin32.sourceforge.net/packages/wget.htm

[Rod]

There is some API code on the LBPE.

alycesrestaurant.com/lbpe/HTTPSData.html

[metro]

Jan 4, 2020 4:04:41 GMT -5 Rod said:

There is some API code on the LBPE.

alycesrestaurant.com/lbpe/HTTPSData.html

I get error 12003 with the lbpe code.

Sorry about the first suggestion , forgot I was using the code below before Carl gave us HTTPGET$ (old age again)

I use Wget for automatic overnight downloads of stock market data in a script on my Linux Machine.

This works for me....Linux Mint Wine LB4.5.1


urlfile$ ="ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/KBHM.TXT"

localfile$="KBHM.txt"
result=DownloadToFile(urlfile$,localfile$)
on error goto [anerror]
print "finished"
wait
'************************************************************************************************************************

[anerror]print "Error string is " + chr$(34) + Err$ + chr$(34)
 print "Error number is ";Err
 end



Function DownloadToFile(urlfile$, localfile$)
   open "URLmon" for dll as #url
   calldll #url, "URLDownloadToFileA",_
       0 as long,_         'null
       urlfile$ as ptr,_   'url to download
       localfile$ as ptr,_ 'save file name
       0 as long,_         'reserved, must be 0
       0 as long,_         'callback address, can be 0
       DownloadToFile as ulong  '0=success
   close #url
End Function


[David Drake]

Thanks everyone for your help!

[Rod]

the LBPE example ran for me. However Brent occasionally reads the forum, he wrote the demo. If you need help hop over to his Baysix Software forum and see if you can wake him up.

[metro]

Jan 6, 2020 3:05:53 GMT -5 Rod said:

the LBPE example ran for me. However Brent occasionally reads the forum, he wrote the demo. If you need help hop over to his Baysix Software forum and see if you can wake him up.

Tested on Win10 Laptop this time yep ...works for HTTPS but still get but get error 12003 when trying to get file via ftp

using ....................

remoteFile$= "ftp://tgftp.nws.noaa.gov/data/observations/metar/decoded/KBHM.TXT"

[Rod]

Yeah my bad metro, I grabbed an https demo. There is of course Alyce's article on FTP

alycesrestaurant.com/lbpe/TCPIPTutorial.html

I have not had time to try but it would seem to offer the functionality we need. I am currently fighting with Windows Defender to open up for download! You would think I didn't know what I was doing


Having had a browse we probably need a guru to show us how to fire up the FTP part. 

[metro]

You would think I didn't know what I was doing

seems to be a lot of seniors moments on this forum lately ....

this link maybe be more helpful and is possibly where I found (many years ago) the DownloadToFile function I used in a previous post
alycesrestaurant.com/lbpe/DownloadFile.html

it does work for me (Linux Mint + Wine)