Visual Basic 6.0

Receive a String from a Socket

Demonstrates Socket.ReceiveString, which receives text and decodes it using StringCharset. It returns the first nonempty decoded result rather than draining all available data.

Background. Text send and receive operations encode and decode bytes using the StringCharset property. For plain ASCII or UTF-8 protocols, setting StringCharset to utf-8 is a safe default.

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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 text and decode it using StringCharset.  ReceiveString returns the first nonempty decoded
'  result; it does not keep reading to drain all available data.
Dim responseText As String
responseText = socket.ReceiveString()
If (socket.LastMethodSuccess = 0) Then
    Debug.Print socket.LastErrorText
    Exit Sub
End If

Debug.Print responseText