Wait for a Socket to Become Writable

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Demonstrates Socket.SelectForWriting, which waits for the socket, or sockets in a socket set, to become writable. It returns 1 if writable, 0 on timeout, or -1 on error.

local chilkat = require("chilkat")

local socket = chilkat.Socket.new()

-- Connect to the server using TLS.
local bTls = true
local maxWaitMs = 5000
local success = socket:connect("example.com", 5000, bTls, maxWaitMs)
if not success then
    print(socket.last_error_text)
    return
end

-- Wait up to 5 seconds for the socket (or sockets in a socket set) to become writable.  Returns 1 if
-- writable, 0 on timeout, or -1 on error.
local ready = socket:select_for_writing(5000)
if ready < 0 then
    print(socket.last_error_text)
    return
end

if ready ~= 1 then
    print("The socket did not become writable before the timeout.")
    return
end

print("The socket is ready for writing.")