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.

require 'chilkat'

success = false

socket = Chilkat::CkSocket.new()

#  Connect to the server using TLS.
bTls = true
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
if (success == false)
    print socket.lastErrorText() + "\n";
    exit
end

#  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 == false)
    print socket.lastErrorText() + "\n";
    exit
end

print "Length prefix sent." + "\n";