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.

import sys
import chilkat

success = False

socket = chilkat.CkSocket()

#  Connect to the server using TLS.
bTls = True
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
if (success == False):
    print(socket.lastErrorText())
    sys.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 == False):
    print(socket.lastErrorText())
    sys.exit()

print("Length prefix sent.")