Several of my apps download a file via FTP for game use. This worked fine under Droid versions below 6, but are failing using droid 6. Any ideas?
Thanks,
Carey
Are there any errors in your console log?
Well, adb is next… But any ideas? The same apps work under 5 but not six. Nothing has changed, but the download or ftp process. Just looking for clues. Thanks
Error 229: Extended Passive Mode Entered
Again, this is only under Android 6. No issue on older Droid devices. I’m using the Graham Ransom FTP code.
Thanks
Android 6 brought a bunch of permission related changes. Entering passive mode shouldn’t generate an error. In general, FTP uses two channels to communicate: a command channel that you open to the server, then when you request to transfer a file, the FTP server opens up a channel back to you to do the transfer. However, firewalls block that type of activity. This is where “passive” mode comes in. With Passive mode, the transfer communications should take place over the command channel or another channel opened from the client to the server.
So it’s possible that Android 6 permissions changed enough to block FTP. However since you’re using something built by a 3rd party, we can’t really answer how it works. I’d reach out to Graham and see what he has to say.
Rob
Rob,
Graham’ stuff is not a product, it’s just a function (which was very useful as there were no examples of FTP for corona)
Any idea why this would generate a 229 error.
local ftp = require(“socket.ftp”)
local ltn12 = require(“ltn12”)
function newConnection(params)
local self = {}
self.host = params.host or “anonymous.org”
self.user = params.user or “anonymous”
self.password = params.password or “”
self.port = params.port or 21
local putFile = function(params, command)
success, error = ftp.put{
host = self.host,
user = self.user,
password = self.password,
port = self.port,
type = “i”,
step = ltn12.all,
command = command,
argument = params.remoteFile,
source = ltn12.source.file( io.open( params.localFile, “rb” ) )
}
if success then
if params.onSuccess then
params.onSuccess( { path = self.host … params.remoteFile } )
end
else
if params.onError then
params.onError( { error = error } )
end
end
return success, error
end
local getFile = function(params)
local success, error = ftp.get{
host = self.host,
user = self.user,
password = self.password,
port = self.port,
type = “i”,
step = ltn12.all,
command = command,
argument = params.remoteFile,
sink = ltn12.sink.file(params.localFile)
}
if success then
if params.onSuccess then
params.onSuccess( { path = params.localPath } )
end
else
if params.onError then
params.onError( { error = error } )
end
end
return success, error
end
function self:upload(params)
return putFile(params, “stor”)
end
function self:download(params)
params.localPath = system.pathForFile( params.localFile, system.DocumentsDirectory )
params.localFile = io.open( params.localPath, “w+b” )
return getFile(params)
end
function self:append(params)
return putFile(params, “appe”)
end
return self
end
Can I see the invocation of where you’re calling the FTP functions?
Can you drop back to build 2879 and try that? 2883 we updated the socket library. We need to make sure this isn’t a regression bug.
Also, FTP message 229 is not an error condition. Its in the category of: The requested action has been successfully completed.
As I said above, passive mode is a common way of working with FTP when behind a firewall. It’s possible Andorid 6 isn’t allowing arbitrary connections back to the device in which case switching to passive mode is required to transfer the files.
Rob
Rob,
My original files were over 1 year ago. I originally spotted this issue under 2874.
The FTP file is working again under 2909.
Thanks,
Carey
Are there any errors in your console log?
Well, adb is next… But any ideas? The same apps work under 5 but not six. Nothing has changed, but the download or ftp process. Just looking for clues. Thanks
Error 229: Extended Passive Mode Entered
Again, this is only under Android 6. No issue on older Droid devices. I’m using the Graham Ransom FTP code.
Thanks
Android 6 brought a bunch of permission related changes. Entering passive mode shouldn’t generate an error. In general, FTP uses two channels to communicate: a command channel that you open to the server, then when you request to transfer a file, the FTP server opens up a channel back to you to do the transfer. However, firewalls block that type of activity. This is where “passive” mode comes in. With Passive mode, the transfer communications should take place over the command channel or another channel opened from the client to the server.
So it’s possible that Android 6 permissions changed enough to block FTP. However since you’re using something built by a 3rd party, we can’t really answer how it works. I’d reach out to Graham and see what he has to say.
Rob
Rob,
Graham’ stuff is not a product, it’s just a function (which was very useful as there were no examples of FTP for corona)
Any idea why this would generate a 229 error.
local ftp = require(“socket.ftp”)
local ltn12 = require(“ltn12”)
function newConnection(params)
local self = {}
self.host = params.host or “anonymous.org”
self.user = params.user or “anonymous”
self.password = params.password or “”
self.port = params.port or 21
local putFile = function(params, command)
success, error = ftp.put{
host = self.host,
user = self.user,
password = self.password,
port = self.port,
type = “i”,
step = ltn12.all,
command = command,
argument = params.remoteFile,
source = ltn12.source.file( io.open( params.localFile, “rb” ) )
}
if success then
if params.onSuccess then
params.onSuccess( { path = self.host … params.remoteFile } )
end
else
if params.onError then
params.onError( { error = error } )
end
end
return success, error
end
local getFile = function(params)
local success, error = ftp.get{
host = self.host,
user = self.user,
password = self.password,
port = self.port,
type = “i”,
step = ltn12.all,
command = command,
argument = params.remoteFile,
sink = ltn12.sink.file(params.localFile)
}
if success then
if params.onSuccess then
params.onSuccess( { path = params.localPath } )
end
else
if params.onError then
params.onError( { error = error } )
end
end
return success, error
end
function self:upload(params)
return putFile(params, “stor”)
end
function self:download(params)
params.localPath = system.pathForFile( params.localFile, system.DocumentsDirectory )
params.localFile = io.open( params.localPath, “w+b” )
return getFile(params)
end
function self:append(params)
return putFile(params, “appe”)
end
return self
end
Can I see the invocation of where you’re calling the FTP functions?
Can you drop back to build 2879 and try that? 2883 we updated the socket library. We need to make sure this isn’t a regression bug.
Also, FTP message 229 is not an error condition. Its in the category of: The requested action has been successfully completed.
As I said above, passive mode is a common way of working with FTP when behind a firewall. It’s possible Andorid 6 isn’t allowing arbitrary connections back to the device in which case switching to passive mode is required to transfer the files.
Rob
Rob,
My original files were over 1 year ago. I originally spotted this issue under 2874.
The FTP file is working again under 2909.
Thanks,
Carey