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.

var
success: Boolean;
socket: HCkSocket;
bTls: Boolean;
maxWaitMs: Integer;
command: PWideChar;
line: PWideChar;

begin
success := False;

socket := CkSocket_Create();

//  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 := True;
maxWaitMs := 5000;
success := CkSocket_Connect(socket,'example.com',5000,bTls,maxWaitMs);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSocket__lastErrorText(socket));
    Exit;
  end;

//  StringCharset controls the character encoding used when sending and receiving text.
CkSocket_putStringCharset(socket,'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 := CkSocket_SendString(socket,command);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSocket__lastErrorText(socket));
    Exit;
  end;

//  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).
line := CkSocket__receiveStringUntilByte(socket,10);
if (CkSocket_getLastMethodSuccess(socket) = False) then
  begin
    Memo1.Lines.Add(CkSocket__lastErrorText(socket));
    Exit;
  end;
Memo1.Lines.Add(line);

CkSocket_Dispose(socket);