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(PowerShell) Socket Send/Receive 16-bit IntegersDemonstrates sending and receiving 16-bit integers over a socket connection using either big-endian or little-endian byte ordering.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll" # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. $sock = New-Object Chilkat.Socket # -------------------------------------------------------------------- # This example uses the public TCP echo service at https://tcpbin.com/ # -------------------------------------------------------------------- $useTls = $false $port = 4242 $maxWaitMs = 5000 $success = $sock.Connect("tcpbin.com",$port,$useTls,$maxWaitMs) if ($success -eq $false) { $($sock.LastErrorText) exit } # Wait a max of 2 seconds for a response.. $sock.MaxReadIdleMs = 2000 # Send a 16-bit integer using big-endian byte ordering (also called network byte order) # 12022 decimal = 2EF6 hex $value = 12022 $bigEndian = $true $sock.SendInt16($value,$bigEndian) # Send it again, because we'll read it two different ways.. $sock.SendInt16($value,$bigEndian) # The tcpbin.com echo server only echoes after receiving an LF (linefeed char) $sock.SendByte(10) # Let's see hex values of the 2 bytes sent in network byte order (big-endian) # (The echo server sends back exactly the bytes received.) $hexStr = $sock.ReceiveNBytesENC(2,"hex") # In the big-ending byte order, the byte order is most significant byte to least significant, # therefore we should see the bytes in the order 0x2E 0xF6. $("Expecting big-endian 2EF6") $($hexStr) # Let's read directly to an integer.. $success = $sock.ReceiveInt16($bigEndian,$true) $("Expecting 12022") $("Received: " + $sock.ReceivedInt) # Consume the LF that gets echoed back.. $sock.ReceiveByte($true) # -------------------------------------------------------------------- # Let's do the same thing, but with little-endian byte ordering. $("----") # 12022 decimal = 2EF6 hex, but little-endian byte ordering will send the bytes in the order 0xF6 0x2E $value = 12022 $bigEndian = $false $sock.SendInt16($value,$bigEndian) $sock.SendInt16($value,$bigEndian) $sock.SendByte(10) $hexStr = $sock.ReceiveNBytesENC(2,"hex") $("Expecting little-endian F62E") $($hexStr) $success = $sock.ReceiveInt16($bigEndian,$true) $("Expecting 12022") $("Received: " + $sock.ReceivedInt) # Consume the LF that gets echoed back.. $sock.ReceiveByte($true) $sock.Close(1000) # Output: # Expecting big-endian 2EF6 # 2EF6 # Expecting 12022 # Received: 12022 # ---- # Expecting little-endian F62E # F62E # Expecting 12022 # Received: 12022 |
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