There seems to be a couple of things wrong.
You should be using TTCPBlockSocket instead of TSocket.
You don't instantiate listener socket object.
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Today's Topics:
1. CanRead always False (P??ma)
----------------------------------------------------------------------
Message: 1
Date: Fri, 26 Jan 2018 11:30:35 +0100
From: P??ma <pr...@email.cz>
To: synalist-public@lists.sourceforge.net
Subject: [Synalist] CanRead always False
Message-ID: <a783cc11-8b51-93e2-5aae-fd0bde839...@email.cz>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi,
When creating program to port forwarding over SSH, I found that the
CanRead function of TCPBlockSocket return always false. This was already
discussed on this forum in 2013 but what was the solution is not clear
to me. At that time Synapse version 3.9 was used.
I use FPC (CodeTyphon) with Synapse 4.0. I have tried simple echo server
demo from Synapse and I have the same issue that it not work. In
attachment is the source code. What I'm doing wrong?
procedure TTCPEchoDaemon.Execute;
var
? ClientSock:TSocket;
begin
? with sock do
??? begin
????? CreateSocket;
????? setLinger(true,10000);
????? bind('0.0.0.0','8008');
????? listen;
????? repeat
??????? if terminated then break;
??????? if canread(1000) then {this is all the time false in my case}
????????? begin
??????????? Synchronize(@InfoCanRead);
??????????? ClientSock:=accept;
??????????? if lastError=0 then TTCPEchoThrd.create(ClientSock);
????????? end else Synchronize(@InfoCanNotRead);
????? until false;
??? end;
end;
Thanks for help.
With best regards
Premek
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