Receive Text up to a Match into a StringBuilder

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveUntilMatchSb, which receives bytes until an exact byte sequence is found and appends the received text to a StringBuilder.

var
success: Integer;
socket: TChilkatSocket;
bTls: Integer;
maxWaitMs: Integer;
command: WideString;
sb: TChilkatStringBuilder;
response: WideString;

begin
success := 0;

socket := TChilkatSocket.Create(Self);

//  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.
bTls := 1;
maxWaitMs := 5000;
success := socket.Connect('example.com',5000,bTls,maxWaitMs);
if (success = 0) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

//  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.
command := 'STATUS' + #13#10;
success := socket.SendString(command);
if (success = 0) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

//  Receive bytes until an exact byte sequence is found, appending the received text to a
//  StringBuilder.  The match may span multiple underlying network reads.
sb := TChilkatStringBuilder.Create(Self);
success := socket.ReceiveUntilMatchSb('<EOM>',sb.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

response := sb.GetAsString();
if (sb.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(sb.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add(response);