Socket – Lua Socket.http Receiver Parameters

 function http.send(url)
 local req = require("socket.http")
 local b, c, h = req.request{
 url = url,
 redirect = true
 }
 return b
end

-- load needed modules
local http = require("socket.http")
local ltn12 = require("ltn12")

-- a simplified http. get function
function http.get(u)
 local t = {}
 local status, code, headers = http.request{
 url = u,
 sink = ltn12.sink.table(t)
 }
 return table.concat(t), headers, code
end

Me I am trying to communicate with Lua’s server to verify user identity. This is how my request function looks like:

function http.send(url)
 local req = require("socket.http")
 local b, c, h = req.request{
 url = url,
 redirect = true
 }
 return b
end

However, I noticed that the data was discarded because I did not provide a sink parameter. I want to be able to return the downloaded data as a whole string instead of downloading to a file/table. what should I do?

You can use ltn12.sink.table to collect the results into a given table one by one. Then you can use table. concat to get the result string.

The example used from the ltn12.sink document:

-- load needed modules
 local http = require("socket.http")
local ltn12 = require("ltn12")

-- a simplified http.get function
function http.get(u )
 local t = {}
 local status, code, headers = http.request{
 url = u,
 sink = ltn12.sink.table(t)
 }
 return table.concat(t), headers, code
end