Receive a Bounded String from a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveStringMaxN, which receives and decodes text like ReceiveString but reads at most a given number of input bytes.

var
success: Integer;
socket: TChilkatSocket;
bTls: Integer;
maxWaitMs: Integer;
command: WideString;
firstChunk: 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 and decode text like ReceiveString, but read at most the given number of input bytes.
//  The limit is measured in bytes, not Unicode characters.
firstChunk := socket.ReceiveStringMaxN(64);
if (socket.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add(firstChunk);