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Delphi ActiveX

Close a Socket Connection

See more Socket/SSL/TLS Examples

Demonstrates Socket.Close, which gracefully terminates and closes the current TCP, TLS, or SSH channel connection. The argument bounds how long to wait for clean shutdown processing.

Background. A value of 0 waits indefinitely for the clean close, while a positive value waits up to that many milliseconds.

Chilkat Delphi ActiveX Downloads

Delphi ActiveX
var
success: Integer;
socket: TChilkatSocket;
bTls: Integer;
maxWaitMs: Integer;

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';

//  Gracefully close the current TCP, TLS, or SSH channel connection.  The argument is the maximum
//  number of milliseconds to wait for clean shutdown processing (0 waits indefinitely).
success := socket.Close(1000);
if (success = 0) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add('Connection closed.');