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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I work on a client-server application that needs to be
supported on both UNIX and windows platforms.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Currently, we keep one socket open for all communication
from client to server (during which many read-write operations take place)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For user authentication and security purposes, we are
planning to implement SSL-Stunnel.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have developed a small ssl client (based on sclient.c
example) which connects to the Stunnel Server.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Upon the first SSL_write, SSL is closing the underlying socket.
Hence the contents written by subsequent SSL_write operations are not visible
in the server log.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I saw lot of posts on the same problem. But couldn’t
find the solution.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any help is greatly appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Please note that:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>1. Due platform independency issues, I use RWSocket (a
Roguewave library class) instead of the BSD socket in conjunction with SSL.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>A potion of stunnel server log<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<div style='mso-element:para-border-div;border-top:solid windowtext 1.0pt;
border-left:none;border-bottom:solid windowtext 1.0pt;border-right:none;
padding:1.0pt 0in 1.0pt 0in'>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:43 LOG7[19699:28]:
FD 1 in non-blocking mode<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:43 LOG7[19699:28]:
rssvr connecting 127.0.0.1:28091<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:43 LOG7[19699:28]:
Remote FD=1 initialized<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:43 LOG7[19699:28]:
TCP_NODELAY option set on remote socket<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>2006.06.12 10:47:45
LOG7[19699:28]: Socket closed on read<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='border:none;padding:0in'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>2006.06.12 10:47:45
LOG7[19699:28]: SSL write shutdown<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='border:none;padding:0in'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>2006.06.12 10:47:45
LOG7[19699:28]: SSL alert (write): warning: close notify<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='border:none;padding:0in'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>2006.06.12 10:47:45
LOG7[19699:28]: SSL_shutdown retrying</span></font></b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:45 LOG7[19699:28]:
SSL doesn't need to read or write<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:50 LOG3[19699:28]:
SSL_read: Connection reset by peer (131)<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:50 LOG5[19699:28]:
Connection reset: 0 bytes sent to SSL, 26 bytes sent to socket<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:50 LOG7[19699:28]:
linger (remote): Invalid argument (22)<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:50 LOG7[19699:28]:
linger (local): Invalid argument (22)<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2006.06.12 10:47:50 LOG7[19699:28]:
rssvr finished (0 left)<o:p></o:p></span></font></p>
<p class=MsoNormal style='border:none;padding:0in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Sri</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><em><b><i><font size=1 face=Verdana><span style='font-size:
7.5pt;font-family:Verdana;font-weight:bold'>Srilalitha Muralidhara</span></font></i></b></em><o:p></o:p></p>
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<address><i><font size=1 face=Arial><span style='font-size:7.5pt;font-family:
Arial'><o:p> </o:p></span></font></i></address>
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