local mp = (require "multipart-post").gen_request
local H = (require "socket.http").request
local rq = mp{myfile = {name = "myfilename", data = "some data"}}
rq.url = "http://httpbin.org/post"
local b,c,h = H(rq)

local mp = (require "multipart-post").gen_request
local H = (require "socket.http").request
local rq = mp{myfile = {name = "myfilename", data = "some data"}}
rq.url = "http://httpbin.org/post"
local res = {}
rq.sink = (require "ltn12").sink.table(res)
local b,c,h = H(rq)
-- response is res
print(table.concat(res))

local enc = (require "multipart-post").encode
local body, boundary = enc{foo="bar"}
-- use `boundary` to build the Content-Type header

local file = io.open("myfilename", "r")
local file_length = file:seek("end")
file:seek("set", 0)

local rq = mp{
	myfile = {name = "myfilename", data = file, len = file_length},
}

ltn12 = require("socket.ltn12")

local rq = mp{
	myfile = {name = "myfilename", data = ltn12.source.string("some data"), len = string.len("some data")}
}
rq.url = "http://httpbin.org/post"
local b,c,h = H(rq)