Hi,
I have a Microsoft Windows server which runs a service named UniverSQL (http://www.sidespace.com) that allows to interact with the installed MSSQL Server from a remote computer, in my case running Linux. The Perl application on the remote computer is based on Socket.pm. It basically creates a socket and sends to the server an XML string containing the SQL query. The Server responds with an XML string: 
my $oSocket = IO::Socket::INET->new(PeerAddr => $HostName,            
+                                               
                                    PeerPort => $Port,                
+                                       
                                    Proto => "tcp",            
                                    Timeout => $SocketTimeout,
                                    Type => 'SOCK_STREAM');

my $sSend = "<?xml version=\"1.0\"?> <request>" .
"<connectionstring>" . $ConnectionString .
"</connectionstring>" .
"<sql><![CDATA[" . $sSQL . "]]></sql></request>";                     
+                         

my $sRet="";

eval {
   local *FH = $oSocket;
   print  FH $sSend;
   my $data_read;
   #read the response
   while (recv(FH, $data_read, 4096,0)) {                             
+              
     $sRet .= $data_read;
     last if ($data_read =~ /<\/xml>/i);                              
+    
   }
};
die if (length($sRet) == 0)

[download]
In old installations this did work very well. My problem is that on two recent installations of Linux (kernel 2..6.16) I don't get any data back ($sRet == 0). But with tcpdump I can see that the query results are coming back to the Linux box. No firewall is installed. I've tried with Socket.pm versions 1.25 and 1.30.
I was wondering if it has anything to do with perl compile options or kernel compile options.
Thank you for any hint.

In reply to No data received on client socket by rbi

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