Delphi ActiveX
Delphi ActiveX
Receive a 16-bit Integer from a Socket
See more Socket/SSL/TLS Examples
Demonstrates Socket.ReceiveInt16, which reads exactly two bytes as a 16-bit integer and stores the result in the ReceivedInt property. Byte order and signedness are selectable.
Background. Fixed-size integers and length prefixes are common building blocks for application-defined binary protocols. Byte order is selectable, with big-endian being network byte order.
Chilkat Delphi ActiveX Downloads
var
success: Integer;
socket: TChilkatSocket;
bTls: Integer;
maxWaitMs: Integer;
bBigEndian: Integer;
bUnsigned: Integer;
begin
success := 0;
socket := TChilkatSocket.Create(Self);
// Connect to the server using TLS.
bTls := 1;
maxWaitMs := 5000;
success := socket.Connect('example.com',5000,bTls,maxWaitMs);
if (success = 0) then
begin
Memo1.Lines.Add(socket.LastErrorText);
Exit;
end;
// Read exactly two bytes as a 16-bit integer and store the result in the ReceivedInt property.
// The 1st argument selects byte order (1 = big-endian); the 2nd selects unsigned interpretation.
bBigEndian := 1;
bUnsigned := 0;
success := socket.ReceiveInt16(bBigEndian,bUnsigned);
if (success = 0) then
begin
Memo1.Lines.Add(socket.LastErrorText);
Exit;
end;
Memo1.Lines.Add('Received 16-bit integer: ' + IntToStr(socket.ReceivedInt));