VB.NET
VB.NET
Receive Text up to a Delimiter Byte
See more Socket/SSL/TLS Examples
Demonstrates Socket.ReceiveStringUntilByte, which receives bytes until a specific raw byte value is found, then decodes the preceding bytes using StringCharset. The delimiter is excluded from the returned string.
Background. The delimiter search is purely byte-oriented and does not recognize character boundaries. A common delimiter is the linefeed byte (decimal 10).
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Dim success As Boolean = False
Dim socket As New Chilkat.Socket
' 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 Boolean = True
Dim maxWaitMs As Integer = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
If (success = False) Then
Debug.WriteLine(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 = "STATUS" & vbCrLf
success = socket.SendString(command)
If (success = False) Then
Debug.WriteLine(socket.LastErrorText)
Exit Sub
End If
' Receive bytes until a specific raw byte value is found, then decode the preceding bytes using
' StringCharset. The delimiter itself is excluded from the returned string. Here the delimiter is
' the linefeed byte (decimal 10).
Dim line As String = socket.ReceiveStringUntilByte(10)
If (socket.LastMethodSuccess = False) Then
Debug.WriteLine(socket.LastErrorText)
Exit Sub
End If
Debug.WriteLine(line)