Send a 4-byte Length Prefix over a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.SendCount, which sends a four-byte length prefix in network byte order. This is typically used to tell the peer how many bytes follow.

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$socket = New-Object Chilkat.Socket

#  Connect to the server using TLS.
$bTls = $true
$maxWaitMs = 5000
$success = $socket.Connect("example.com",5000,$bTls,$maxWaitMs)
if ($success -eq $false) {
    $($socket.LastErrorText)
    exit
}

#  Send a four-byte length prefix in network byte order.  A common framing pattern is to send the
#  number of bytes in a message before the message itself, so the peer knows exactly how many bytes
#  to read.
$messageLength = 512
$success = $socket.SendCount($messageLength)
if ($success -eq $false) {
    $($socket.LastErrorText)
    exit
}

$("Length prefix sent.")