Lua

Read the REST Response Header and Status Code

Demonstrates Rest.ReadResponseHeader, which reads the HTTP response status line and header fields after a staged send. The returned integer is the HTTP status code, or -1 if no response was received.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

Chilkat Lua Downloads

Download Chilkat for Lua

Lua

local chilkat = require("chilkat")

local rest = chilkat.Rest.new()
local bTls = true
local bAutoReconnect = true
local success = rest:connect("example.com", 443, bTls, bAutoReconnect)
if not success then
    print(rest.last_error_text)
    return
end

success = rest:send_req_no_body("GET", "/api/items/123")
if not success then
    print(rest.last_error_text)
    return
end

-- Read the HTTP response status line and header fields.  The returned integer is the HTTP status
-- code (such as 200, 404, or 500), or -1 if no response was received.
local statusCode = rest:read_response_header()
if statusCode < 0 then
    print(rest.last_error_text)
    return
end

print("Response status code: " .. statusCode)