El 02/11/2015 a las 20:32, Bo Berglund escribió:
IMHO using lnet or Synapse would be a lot "clearer" than using the
overly complex Indy Library.
I had already looked at Synapse, but it is blocking.
I did not know about lnet (or INet as it is shown when one searches)
before but now I have had a look and it seems to fit the bill for me
since it is event oriented, like I need for this particular task.
Hello,
I was following your thread from the beginning and or I do not
understand absolutely nothing about your needs or you are focusing the
problem in the opposite way. Let me explain me, I think you had
inherited a GUI app which you need to transform in a console one and
this GUI app uses events to coordinate data flows, so in example the app
connects to a server, gets a web page and some event handler process
this data and outputs something to a file. The problem was that the
event handler also updates information on screen (AKA TListView, ...)
which you already removed.
That's fine, but my question is why you need event sockets ? I had
converted some small apps with events in console ones and using only
blocking sockets because I do not need to update screen information in
GUI, only in console and as the console (in my case) do not need events
from the user like response to keypress I do not need real events, so I
wrote your "thread" in the main thread and manually "evented" each
reception, something like this in pseudocode:
begin
Socket.Connect...
MyClass.Connect(Socket);
Socket.http('xxxxx');
while Socket.Connected do begin
If Timedout() then break;
ReceivedBytes:=Socket.Read(Buffer,0);
if ReceivedBytes>=0 then begin
ReceivedBytes:=Socket.Read(Buffer,ReceivedBytes);
//Now I call the event reception
//not a real event, but that's not important.
MyClass.Received(Socket,Buffer,ReceivedBytes);
end;
end;
Socket.Close;
MyClass.Disconnect(Socket,REASON_GREACEFUL_CLOSE);
Socket.Free;
end;
Of course the same can be done with multiple sockets at a time and call
different handlers based in the socket that connects, receive data, etc...
Even if you use http transfers its more easy with blocking, something like:
Document:=http.get('http://xxxxxxx);
MyClass.Connect();
MyClass.Receive(Buffer,Length(Buffer));
MyClass.Closed();
Your class do not know if the data comes from an event or from a
blocking socket. A different thing is if you need some kind of timing
between operations.
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