On Fri, Sep 3, 2010 at 11:46 AM, Fabio Mascarenhas <mascaren...@acm.org>wrote:
> More than a starting point, I think. The parse_message_body function
> in this can be reused in an WSAPI program by making an LTN12 source
> for wsapi_env.input, which should be easy, plus passing { env =
> wsapi_env } as the msg parameter, and your file upload callback.
>
> The LTN12 module is part of LuaSocket.
>
I have written something like that. I think it goes along the lines of what
you suggested.
I think the following example assumes the POST is multipart/form-data
function UploadHandler(wsapi_env)
local request = wsapi.request_stream.new(wsapi_env)
local response = wsapi.response.new(200, { ["Content-Type"]= "text/plain"
})
local file_sink, err = ltn12.sink.file( io.open(fullFileName, "wb") )
if not file_sink then
response.status = 500
response:write("Unable to save file to disk")
return response:finish()
end
-- o Table containing decoded (name, file) and raw (headers) mime header
data
-- o String value containing a chunk of the file data
-- o Boolean which indicates wheather the current chunk is the last one
(eof)
local readBytes = 0
local mimeHeaders
local callback = function( headers, chunk, last )
if not mimeHeaders then
mimeHeaders = headers
end
readBytes = readBytes + #chunk
file_sink(chunk)
if last then
file_sink(nil)
end
end
request:parse_message_body( callback )
response:write(tostring(readBytes))
return response:finish()
end
request_stream.lua
Description: Binary data
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