When server receives a Binary Message, OnBinary event is fired, just read Data parameter to know the binary message received.
procedure OnBinary(Connection: TsgcWSConnection; const Data: TMemoryStream);
var
oBitmap: TBitmap;
begin
oBitmap := TBitmap.Create;
Try
oBitmap.LoadFromStream(Data);
Image1.Picture.Assign(oBitmap);
Log(
'#image uncompressed size: ' + IntToStr(Data.Size) +
'. Total received: ' + IntToStr(Connection.RecBytes));
Finally
FreeAndNil(oBitmap);
End;
end;By default, server uses neAsynchronous method to dispatch OnMessage event, this means that this event is executed on the context of Main Thread, so it's thread-safe to update any control of a form for example.
If your server receives lots of messages or you need to control the synchronization with other threads, set NotifyEvents property to neNoSync, this means that OnMessage event will be executed on the context of connection thread, so if you require to update any control of a form or access shared objects, you must implement your own synchronization methods.