VBScript

Socket Send and Receive BinData

Demonstrates the Chilkat Socket ReceiveBdN and SendBd methods. VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set sock = CreateObject("Chilkat.Socket")

' --------------------------------------------------------------------
' This example uses the public TCP echo service at https://tcpbin.com/
' --------------------------------------------------------------------

useTls = 0
port = 4242
maxWaitMs = 5000
success = sock.Connect("tcpbin.com",port,useTls,maxWaitMs)
If (success = 0) Then
    outFile.WriteLine(sock.LastErrorText)
    WScript.Quit
End If

' Wait a max of 2 seconds for a response..
sock.MaxReadIdleMs = 2000

' Send 26 bytes contained in a Chilkat BinData
set bdToSend = CreateObject("Chilkat.BinData")
i = 0
byteVal = 65
Do While i < 26
    success = bdToSend.AppendByte(byteVal)
    byteVal = byteVal + 1
    i = i + 1
Loop
' Send the contents of the BinData
' Pass zero's in the 2nd and 3rd arguments to send the entire contents of the BinData.
success = sock.SendBd(bdToSend,0,0)

' The tcpbin.com echo server only echoes after receiving an LF (linefeed char)
success = sock.SendByte(10)

' The echo server will echo back whatever is sent to it.
' We should be able to read the same bytes back..
set bdRecv = CreateObject("Chilkat.BinData")
' Receive the 26 bytes previously sent, plus the LF char.
success = sock.ReceiveBdN(27,bdRecv)
If (success = 0) Then
    outFile.WriteLine(sock.LastErrorText)
    WScript.Quit
End If

' Show the contents of bdRecv in hex format
outFile.WriteLine(bdRecv.GetEncoded("hex"))

' Output:  4142434445464748494A4B4C4D4E4F505152535455565758595A0A

outFile.Close