httpserver-header.lua 1.4 KB

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  1. -- httpserver-header.lua
  2. -- Part of nodemcu-httpserver, knows how to send an HTTP header.
  3. -- Author: Marcos Kirsch
  4. return function (connection, code, extension, isGzipped)
  5. local function getHTTPStatusString(code)
  6. local codez = {[200]="OK", [400]="Bad Request", [404]="Not Found",}
  7. local myResult = codez[code]
  8. -- enforce returning valid http codes all the way throughout?
  9. if myResult then return myResult else return "Not Implemented" end
  10. end
  11. local function getMimeType(ext)
  12. -- A few MIME types. Keep list short. If you need something that is missing, let's add it.
  13. local mt = {css = "text/css", gif = "image/gif", html = "text/html", ico = "image/x-icon", jpeg = "image/jpeg", jpg = "image/jpeg", js = "application/javascript", json = "application/json", png = "image/png", xml = "text/xml"}
  14. if mt[ext] then return mt[ext] else return "text/plain" end
  15. end
  16. local mimeType = getMimeType(extension)
  17. local header = "HTTP/1.0 " .. code .. " " .. getHTTPStatusString(code) .. "\r\nServer: nodemcu-httpserver\r\nContent-Type: " .. mimeType .. "\r\nnCache-Control: private, no-store\r\n"
  18. if isGzipped then
  19. header = header .. "Cache-Control: max-age=2592000\r\n"
  20. header = header .. "Content-Encoding: gzip\r\n"
  21. end
  22. header = header .. "Connection: close\r\n\r\n"
  23. connection:send(header)
  24. header = nil
  25. end