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8.4

SendBuf and ReceiveBuf

Asked by kc2592 in Delphi Programming

Tags: receivebuf, sendbuf

Hello, here is part of my program,

function Tdhskmus1.HostIPIO(data: PChar; len: integer): integer;
var
      iphostcmd, respcmd: TIPHOSTCMD;
Begin
  result := 0;
  HostIP_connect; //open the socket connection
  ....
  rc := fmtIPCmd(Desrec, iphostcmd); //return number of bytes to be sent
  showmessage(format('I AM ALIVE ()', []));
  rc := host_socket.socket.SendBuf(iphostcmd, rc);
  showmessage(format('rc = %d', [rc]));
  host_socket.socket.ReceiveBuf(respcmd, sizeof(respcmd));
  ...
  host_socket.close;
end;

My question is I have to insert those 2 "showmessage" code for the program to work properly, otherwise  sendbuf and receivebuf will fail (sendbuf writes nothing). I don't understand why this would happen. I have tried insert other codes in the middle, but it appears to be only message box can make it work. Could someone tell me how to resolve it? I don't want user keep pressing enter when the program is running!
Thank you.
[+][-]04/07/04 11:58 PM, ID: 10781396Accepted Solution

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About this solution

Zone: Delphi Programming
Tags: receivebuf, sendbuf
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Solution Provided By: mocarts
Participating Experts: 2
Solution Grade: A
 
[+][-]04/06/04 04:24 AM, ID: 10764709Expert Comment

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