Lua

Explaining the Rest ClearResponseBodyStream Method

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The ClearResponseBodyStream method would be needed if your applicaiton called SetResponseBodyStream to send the response to a stream for one request, but then wants to subsequently do something else. The application must call ClearResponseBodyStream to no longer send responses to the stream. Lua

local chilkat = require("chilkat")

-- This example requires the Chilkat API to have been previously unlocked.
-- See Global Unlock Sample for sample code.

local rest = chilkat.Rest.new()

-- Connect to the web server
local bTls = true
local port = 443
local bAutoReconnect = true
local success = rest:connect("www.chilkatsoft.com", port, bTls, bAutoReconnect)
if not success then
    print(rest.last_error_text)
    return
end

-- Setup a file stream for the download
local fileStream = chilkat.Stream.new()
fileStream.sink_file = "qa_output/starfish.jpg"

-- Indicate that the call to FullRequestNoBody should send the response body
-- to fileStream if the response status code is 200.
-- If a non-success response status code is received, then nothing
-- is streamed to the output file and the error response is returned by FullRequestNoBody.
local expectedStatus = 200
rest:set_response_body_stream(expectedStatus, true, fileStream)

local responseStr = rest:full_request_no_body("GET", "/images/starfish.jpg")
if not rest.last_method_success then
    -- Examine the request/response to see what happened.
    print("response status code = " .. rest.response_status_code)
    print("response status text = " .. rest.response_status_text)
    print("response header: " .. rest.response_header)
    print("response body (if any): " .. responseStr)
    print("---")
    print("LastRequestStartLine: " .. rest.last_request_start_line)
    print("LastRequestHeader: " .. rest.last_request_header)
    return
end

print("downloaded starfish.jpg")

-- Clear the response body stream previously set in the call to SetResponseBodyStream.
rest:clear_response_body_stream()

-- Download something else, but this time send the response body to bd.
local bd = chilkat.BinData.new()
success = rest:full_request_no_body_bd("GET", "/images/penguins.jpg", bd)
if not success then
    -- Examine the request/response to see what happened.
    print("response status code = " .. rest.response_status_code)
    print("response status text = " .. rest.response_status_text)
    print("response header: " .. rest.response_header)
    print("response body (if any): " .. bd:get_string("utf-8"))
    print("---")
    print("LastRequestStartLine: " .. rest.last_request_start_line)
    print("LastRequestHeader: " .. rest.last_request_header)
    return
end

-- Save the contents of bd to a file.
success = bd:write_file("qa_output/penguins.jpg")

print("Success: " .. tostring(success))