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Visual Basic 6.0

Receive Text up to a Matching Sequence

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveUntilMatch, which receives bytes until an exact byte sequence is found. The match string is encoded using StringCharset and compared byte-for-byte.

Background. The comparison is case-sensitive with no Unicode normalization. This is useful for reading a message that ends with an application-defined marker delimiting the end of a response.

Chilkat Visual Basic 6.0 Downloads

Visual Basic 6.0
Dim success As Long
success = 0

Dim socket As New ChilkatSocket

'  Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
'  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
Dim bTls As Long
bTls = 1
Dim maxWaitMs As Long
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

'  StringCharset controls the character encoding used when sending and receiving text.
socket.StringCharset = "utf-8"
'  Send a request using a simple application-defined text protocol in which each message ends with a
'  CRLF.
Dim command As String
command = "STATUS" & vbCrLf
success = socket.SendString(command)
If (success = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

'  Receive bytes until an exact byte sequence is found.  The match string is encoded using
'  StringCharset and compared byte-for-byte.  Here the server marks the end of its response with an
'  application-defined marker.
Dim response As String
response = socket.ReceiveUntilMatch("<EOM>")
If (socket.LastMethodSuccess = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

Debug.Print response