Xojo Plugin

Socket Send and Receive BinData

Demonstrates the Chilkat Socket ReceiveBdN and SendBd methods. Xojo Plugin

Dim success As Boolean
success = False

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

Dim sock As New Chilkat.Socket

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

Dim useTls As Boolean
useTls = False
Dim port As Int32
port = 4242
Dim maxWaitMs As Int32
maxWaitMs = 5000
success = sock.Connect("tcpbin.com",port,useTls,maxWaitMs)
If (success = False) Then
    System.DebugLog(sock.LastErrorText)
    Return
End If

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

// Send 26 bytes contained in a Chilkat BinData
Dim bdToSend As New Chilkat.BinData
Dim i As Int32
i = 0
Dim byteVal As Int32
byteVal = 65
While i < 26
    success = bdToSend.AppendByte(byteVal)
    byteVal = byteVal + 1
    i = i + 1
Wend
// 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..
Dim bdRecv As New Chilkat.BinData
// Receive the 26 bytes previously sent, plus the LF char.
success = sock.ReceiveBdN(27,bdRecv)
If (success = False) Then
    System.DebugLog(sock.LastErrorText)
    Return
End If

// Show the contents of bdRecv in hex format
System.DebugLog(bdRecv.GetEncoded("hex"))

// Output:  4142434445464748494A4B4C4D4E4F505152535455565758595A0A