CkPython

Receive a Single Byte from a Socket

Demonstrates Socket.ReceiveByte, which reads exactly one byte and stores its numeric value in the ReceivedInt property. The argument selects signed or unsigned interpretation.

Background. Fixed-size integers and length prefixes are common building blocks for application-defined binary protocols. Byte order is selectable, with big-endian being network byte order.

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CkPython

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()

#  Read exactly one byte.  Its numeric value is stored in the ReceivedInt property.  Passing True
#  interprets the byte as unsigned (0 through 255); False interprets it as signed.
bUnsigned = True
success = socket.ReceiveByte(bUnsigned)
if (success == False):
    print(socket.lastErrorText())
    sys.exit()

print("Received byte value: " + str(socket.get_ReceivedInt()))