Lua

Send UTF-16 on TCP or TLS Socket

See more Socket/SSL/TLS Examples

Demonstrates how to send a string on a connected TCP or SSL/TLS socket such that it is the utf-16 byte representation that is sent. Lua

local chilkat = require("chilkat")

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

local socket = chilkat.Socket.new()

local tls = false
local maxWaitMs = 20000
local domainOrIpAddr = "example.com"
local port = 1234

-- Connect to the whatever is expecting our connection...
local success = socket:connect(domainOrIpAddr, port, tls, maxWaitMs)
if not success then
    print(socket.last_error_text)
    return
end

-- Let's say we have an XML file saved in the utf-16 byte representation,
-- and we want to send it over the connection using the utf-16 byte representation...

-- First the file into a Chilkat StringBuilder.
-- Tell the LoadFile method that we are reading utf-16 bytes..
local sbXml = chilkat.StringBuilder.new()
success = sbXml:load_file("qa_data/xml/myUtf16.xml", "utf-16")
if not success then
    print("Failed to load utf-16 XML file..")
    return
end

-- Tell the socket object that we wish to send the utf-16 byte representation of the string.
socket.string_charset = "utf-16"

-- Send the string as utf-16 bytes.
success = socket:send_sb(sbXml)
if not success then
    print(socket.last_error_text)
    return
end

-- Let's say we wanted to instead send the string as utf-8 bytes.
-- Just tell the socket object...
socket.string_charset = "utf-8"

-- Send the string as utf-8 bytes.
success = socket:send_sb(sbXml)
if not success then
    print(socket.last_error_text)
    return
end

-- If our XML file was utf-8, then just tell the StringBuilder that we're reading utf-8.
-- Once the text is properly contained in the StringBuilder, we can send the contents in any other charset (windows-1252, utf-16, utf-8, etc.)
-- as long as it make sense (i.e. we obviously can't send Japanese text using a single-byte charset such as Windows-1252).
success = sbXml:load_file("qa_data/xml/myUtf8.xml", "utf-8")
if not success then
    print("Failed to load utf-8 XML file..")
    return
end

-- Send as utf-16
socket.string_charset = "utf-16"

-- Send the string as utf-16 bytes.
success = socket:send_sb(sbXml)
if not success then
    print(socket.last_error_text)
    return
end

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