Delphi DLL
Delphi DLL
Receive a 32-bit Integer from a Socket
See more Socket/SSL/TLS Examples
Demonstrates Socket.ReceiveInt32, which reads exactly four bytes as a signed 32-bit integer and stores the result in the ReceivedInt property. Byte order is 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.
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var
success: Boolean;
socket: HCkSocket;
bTls: Boolean;
maxWaitMs: Integer;
bBigEndian: Boolean;
begin
success := False;
socket := CkSocket_Create();
// Connect to the server using TLS.
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;
// Read exactly four bytes as a signed 32-bit integer and store the result in the ReceivedInt
// property. The argument selects byte order (1 = big-endian, network byte order).
bBigEndian := True;
success := CkSocket_ReceiveInt32(socket,bBigEndian);
if (success = False) then
begin
Memo1.Lines.Add(CkSocket__lastErrorText(socket));
Exit;
end;
Memo1.Lines.Add('Received 32-bit integer: ' + IntToStr(CkSocket_getReceivedInt(socket)));
CkSocket_Dispose(socket);