Receive an Exact Number of Bytes into a BinData

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveBdN, which receives exactly the requested number of bytes and appends them to a BinData, continuing until the full count is satisfied.

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

-- MaxReadIdleMs controls the inactivity limit for receiving.  The ReceiveBdN call will fail if
-- incoming bytes halt for longer than this many milliseconds before the full amount is received.
socket.max_read_idle_ms = 15000

-- Receive exactly the requested number of bytes, appending them to a BinData.  The method continues
-- receiving until the full count is satisfied or a failure occurs.
local bd = chilkat.BinData.new()
success = socket:receive_bd_n(256, bd)
if not success then
    print(socket.last_error_text)
    return
end

print("Received " .. bd.num_bytes .. " bytes.")