Sample code for 30+ languages & platforms
Xojo Plugin

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 Xojo Plugin Downloads

Xojo Plugin
Dim success As Boolean
success = 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
bTls = True
Dim maxWaitMs As Int32
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
If (success = False) Then
    System.DebugLog(socket.LastErrorText)
    Return
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" + EndOfLine.Windows
success = socket.SendString(command)
If (success = False) Then
    System.DebugLog(socket.LastErrorText)
    Return
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 = False) Then
    System.DebugLog(socket.LastErrorText)
    Return
End If

System.DebugLog(response)