Receive an Exact Number of Bytes into a BinData

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveBdN, which receives exactly the requested number of bytes and appends them to a BinData, continuing until the full count is satisfied.

var
success: Boolean;
socket: HCkSocket;
bTls: Boolean;
maxWaitMs: Integer;
bd: HCkBinData;

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;

//  MaxReadIdleMs controls the inactivity limit for receiving.  The ReceiveBdN call will fail if
//  incoming bytes halt for longer than this many milliseconds before the full amount is received.
CkSocket_putMaxReadIdleMs(socket,15000);

//  Receive exactly the requested number of bytes, appending them to a BinData.  The method continues
//  receiving until the full count is satisfied or a failure occurs.
bd := CkBinData_Create();
success := CkSocket_ReceiveBdN(socket,256,bd);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSocket__lastErrorText(socket));
    Exit;
  end;
Memo1.Lines.Add('Received ' + IntToStr(CkBinData_getNumBytes(bd)) + ' bytes.');

CkSocket_Dispose(socket);
CkBinData_Dispose(bd);