[stunnel-users] socket closed after SSL_write

Mon Jun 12 12:01:30 CEST 2006

Hi,

I work on a client-server application that needs to be supported on both
UNIX and windows platforms.

Currently, we keep one socket open for all communication from client to
server (during which many read-write operations take place)

For user authentication and security purposes, we are planning to
implement SSL-Stunnel.

I have developed a small ssl client (based on sclient.c example) which
connects to the Stunnel Server.

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.

I saw lot of posts on the same problem. But couldn't find the solution.

Any help is greatly appreciated.

Please note that:

1. Due platform independency issues, I use RWSocket (a Roguewave library
class) instead of the BSD socket in conjunction with SSL.

A potion of stunnel server log

2006.06.12 10:47:43 LOG7[19699:28]: FD 1 in non-blocking mode

2006.06.12 10:47:43 LOG7[19699:28]: rssvr connecting 127.0.0.1:28091

2006.06.12 10:47:43 LOG7[19699:28]: Remote FD=1 initialized

2006.06.12 10:47:43 LOG7[19699:28]: TCP_NODELAY option set on remote
socket

2006.06.12 10:47:45 LOG7[19699:28]: Socket closed on read

2006.06.12 10:47:45 LOG7[19699:28]: SSL write shutdown

2006.06.12 10:47:45 LOG7[19699:28]: SSL alert (write): warning: close
notify

2006.06.12 10:47:45 LOG7[19699:28]: SSL_shutdown retrying

2006.06.12 10:47:45 LOG7[19699:28]: SSL doesn't need to read or write

2006.06.12 10:47:50 LOG3[19699:28]: SSL_read: Connection reset by peer
(131)

2006.06.12 10:47:50 LOG5[19699:28]: Connection reset: 0 bytes sent to
SSL, 26 bytes sent to socket

2006.06.12 10:47:50 LOG7[19699:28]: linger (remote): Invalid argument
(22)

2006.06.12 10:47:50 LOG7[19699:28]: linger (local): Invalid argument
(22)

2006.06.12 10:47:50 LOG7[19699:28]: rssvr finished (0 left)

Thanks 

Sri

Srilalitha Muralidhara

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