HTTP.GetFileSize Examples

OverviewExamples

number HTTP.GetFileSize (

string URL,

number Mode = MODE_BINARY,

number Timeout = 20,

number Port = 80,

table AuthData = nil,

table ProxyData = nil,

function CallbackFunction = nil )

Example 1

nSize = HTTP.GetFileSize("http://www.mydomain.com/myfile.exe", MODE_BINARY, 20, 80, nil, nil, nil);

Gets the size of the file "myfile.exe" located at "http://www.mydomain.com" and stores it in the variable nSize.

Example 2

-- Settings for HTTP actions

sFileOnServer = "http://www.yourdomain.com/pub/file.ext";

sLocalFilePath = _TempFolder .. "file.ext";

nServerMode = MODE_BINARY;

nServerTimeout = 20;

nServerPort = 80;

tAuthData = nil;

tProxyData = nil;

-- Set the max bytes allowed without alerting the user to 2MB (2*1024*1024):

QuestionByteThreshold = 2097152;

-- Assume download should continue

bContinueDownload = true;

-- Get Filesize of file to be downloaded

FileSize = HTTP.GetFileSize(sFileOnServer, nServerMode, nServerTimeout, nServerPort, tAuthData, tProxyData, nil);

-- Check if filesize is unknown

if FileSize == -1 then

-- Filesize is unknown, alert user

choice = Dialog.Message("Alert", "Filesize is unknown. Continue Download?", MB_YESNO, MB_ICONQUESTION, MB_DEFBUTTON1);

if choice == 7 then

-- User chose not to continue with download

bContinueDownload = false;

end

-- Check if file size is greater than threshold

elseif FileSize > QuestionByteThreshold then

-- Filesize is larger than threshold, alert the user

choice = Dialog.Message("Alert", "Filesize is greater than the threshold by " .. FileSize - QuestionByteThreshold .. " bytes. Continue Download?", MB_YESNO, MB_ICONQUESTION, MB_DEFBUTTON1);

if choice == 7 then

-- User chose not to continue with download

bContinueDownload = false;

end

-- Check if download should continue

if bContinueDownload then

-- Download File, using built in status dialog

StatusDlg.Show();

StatusDlg.ShowCancelButton();

HTTP.Download(sFileOnServer, sLocalFilePath, nServerMode, sServerPass, nServerPort, tAuthData, tProxyData, nil);

StatusDlg.Hide();

else

-- Don't download file, alert user that download has been terminated

Dialog.Message("Alert", "Download aborted by user");

end

Checks the size of a file on a HTTP server to be downloaded. If the file is larger than a predefined threshold, the user is asked if the download should continue.