Lua

Http Follow Redirects

See more HTTP Examples

Demonstrates how to automatically follow redirects. Lua

local chilkat = require("chilkat")

local http = chilkat.Http.new()

-- If you would like to see the HTTP session log to see how
-- HTTP redirects were followed.
http.session_log_filename = "c:/temp/qa_output/sessionLog.txt"

-- Run the test using this URL.
-- (Works while httpbin.org keeps the test endpoint available.)

local url = "https://httpbin.org/redirect-to?url={$redirectUrl}&status_code={$statusCode}"

http:set_url_var("redirectUrl", "https://chilkatsoft.com/helloWorld.json")
http:set_url_var("statusCode", "302")

local jsonResponse = http:quick_get_str(url)
if not http.last_method_success then
    print(http.last_error_text)
    return
end

print("Response status code: " .. http.last_status)
print(jsonResponse)

-- How to tell if the request was redirected, and if so,
-- what was the final redirect URL?
print("Was Redirected: " .. tostring(http.was_redirected))
print("Final Redirect URL: " .. http.final_redirect_url)

-- Output:

-- Response status code: 200
-- { "hello": "world" }
-- Was Redirected: True
-- Final Redirect URL: https://chilkatsoft.com/helloWorld.json

-- -----------------------------------------------
-- Here are the contents of the sessionLog.txt

-- ---- Sending Sat, 30 Aug 2025 11:41:37 GMT ----
-- GET /redirect-to?url=https%3A%2F%2Fchilkatsoft.com%2FhelloWorld.json&status_code=302 HTTP/1.1
-- Host: httpbin.org
-- Accept: */*
-- Accept-Encoding: gzip
--
--
-- ---- Received Sat, 30 Aug 2025 11:41:37 GMT ----
-- HTTP/1.1 302 FOUND
-- Date: Sat, 30 Aug 2025 11:41:38 GMT
-- Content-Type: text/html; charset=utf-8
-- Content-Length: 0
-- Connection: keep-alive
-- Server: gunicorn/19.9.0
-- Location: https://chilkatsoft.com/helloWorld.json
-- Access-Control-Allow-Origin: *
-- Access-Control-Allow-Credentials: true
--
--
-- ---- Sending Sat, 30 Aug 2025 11:41:38 GMT ----
-- GET /helloWorld.json HTTP/1.1
-- Host: chilkatsoft.com
-- Accept: */*
-- Accept-Encoding: gzip
--
--
-- ---- Received Sat, 30 Aug 2025 11:41:38 GMT ----
-- HTTP/1.1 200 OK
-- Content-Type: application/json
-- Last-Modified: Sun, 20 Aug 2023 11:36:27 GMT
-- Accept-Ranges: bytes
-- ETag: "34c27f8e5ad3d91:0"
-- Server: Microsoft-IIS/10.0
-- X-Powered-By: ASP.NET
-- Date: Sat, 30 Aug 2025 11:41:38 GMT
-- Content-Length: 22
--
-- { "hello": "world" }