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(Visual Basic 6.0) Send UTF-16 on TCP or TLS Socket

See more Socket/SSL/TLS Examples

Demonstrates how to send a string on a connected TCP or SSL/TLS socket such that it is the utf-16 byte representation that is sent.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

Dim socket As New ChilkatSocket

Dim tls As Long
tls = 0
Dim maxWaitMs As Long
maxWaitMs = 20000
Dim domainOrIpAddr As String
domainOrIpAddr = "example.com"
Dim port As Long
port = 1234

' Connect to the whatever is expecting our connection...
Dim success As Long
success = socket.Connect(domainOrIpAddr,port,tls,maxWaitMs)
If (success <> 1) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

' Let's say we have an XML file saved in the utf-16 byte representation,
' and we want to send it over the connection using the utf-16 byte representation...

' First the file into a Chilkat StringBuilder.
' Tell the LoadFile method that we are reading utf-16 bytes..
Dim sbXml As New ChilkatStringBuilder
success = sbXml.LoadFile("qa_data/xml/myUtf16.xml","utf-16")
If (success <> 1) Then
    Debug.Print "Failed to load utf-16 XML file.."
    Exit Sub
End If

' Tell the socket object that we wish to send the utf-16 byte representation of the string.
socket.StringCharset = "utf-16"

' Send the string as utf-16 bytes.
success = socket.SendSb(sbXml)
If (success <> 1) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

' Let's say we wanted to instead send the string as utf-8 bytes.
' Just tell the socket object...
socket.StringCharset = "utf-8"

' Send the string as utf-8 bytes.
success = socket.SendSb(sbXml)
If (success <> 1) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

' If our XML file was utf-8, then just tell the StringBuilder that we're reading utf-8.
' Once the text is properly contained in the StringBuilder, we can send the contents in any other charset (windows-1252, utf-16, utf-8, etc.) 
' as long as it make sense (i.e. we obviously can't send Japanese text using a single-byte charset such as Windows-1252).
success = sbXml.LoadFile("qa_data/xml/myUtf8.xml","utf-8")
If (success <> 1) Then
    Debug.Print "Failed to load utf-8 XML file.."
    Exit Sub
End If

' Send as utf-16
socket.StringCharset = "utf-16"

' Send the string as utf-16 bytes.
success = socket.SendSb(sbXml)
If (success <> 1) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

' ...
' ...

 

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