-- Set keep_alive. The return value specifies if this is possible at all.
canKeepAlive = mg.keep_alive(true)
now = os.date("!%a, %d %b %Y %H:%M:%S")
-- First send the http headers
mg.write("HTTP/1.1 200 OK\r\n")
mg.write("Content-Type: text/html\r\n")
mg.write("Date: " .. now .. " GMT\r\n")
mg.write("Cache-Control: no-cache\r\n")
mg.write("Last-Modified: " .. now .. " GMT\r\n")
if not canKeepAlive then
mg.write("Connection: close\r\n")
mg.write("\r\n")
mg.write("Keep alive not possible!")
return
end
if mg.request_info.http_version ~= "1.1" then
-- wget will use HTTP/1.0 and Connection: keep-alive, so chunked transfer is not possible
mg.write("Connection: close\r\n")
mg.write("\r\n")
mg.write("Chunked transfer is only possible for HTTP/1.1 requests!")
mg.keep_alive(false)
return
end
-- use chunked encoding (http://www.jmarshall.com/easy/http/#http1.1c2)
mg.write("Cache-Control: max-age=0, must-revalidate\r\n")
--mg.write("Cache-Control: no-cache\r\n")
--mg.write("Cache-Control: no-store\r\n")
mg.write("Connection: keep-alive\r\n")
mg.write("Transfer-Encoding: chunked\r\n")
mg.write("\r\n")
-- function to send a chunk
function send(str)
local len = string.len(str)
mg.write(string.format("%x\r\n", len))
mg.write(str.."\r\n")
end
-- send the chunks
send("")
send("Civetweb Lua script chunked transfer test page")
send("\n")
fileCnt = 0
if lfs then
send("Files in " .. lfs.currentdir())
send('\n\n')
send('| name | type | size |
|---|
\n')
for f in lfs.dir(".") do
local at = lfs.attributes(f);
if at then
send('| ' .. f .. ' | ' .. at.mode .. ' | ' .. at.size .. ' |
\n')
end
fileCnt = fileCnt + 1
end
send("
\n")
end
send(fileCnt .. " entries (" .. now .. " GMT)\n")
send("")
send("")
-- end
send("")