Shutdown disables the ability to read, write (or both) on a socket. However,
shutdown() does not close the socket. to release the socket descriptor back to
the OS you also need to call closesocket();
----- Original Message ----
From: Matthew Allen <l...@sydneyband.com.au>
To: openssl-users@openssl.org
Sent: Wed, April 21, 2010 2:18:27 AM
Subject: Socket left in CLOSE_WAIT state...
Hi,
My code leaves sockets in the CLOSE_WAIT state after I free the SSL connection
(running on windows XP with OpenSSL 0.9.8e). After I'm done with the
connection I call SSL_shutdown and SSL_free, but that doesn't close the socket
on the client side. My code's probably wrong, so tell me what I should change?
#include <stdlib.h>
#include "windows.h"
#include "openssl/ssl.h"
char Hostname[] = "imap.gmail.com";
int Port = 993;
int main(int args, char **arg)
{
printf("OpenSSL Test\n");
SSL_library_init();
SSL_load_error_strings();
ERR_load_BIO_strings();
OpenSSL_add_all_algorithms();
SSL_CTX *Ctx = SSL_CTX_new(SSLv23_client_method());
if (Ctx)
{
SSL *Ssl = 0;
BIO *Bio = BIO_new_ssl_connect(Ctx);
if (Bio)
{
BIO_get_ssl(Bio, &Ssl);
if (Ssl)
{
SSL_set_mode(Ssl, SSL_MODE_AUTO_RETRY);
BIO_set_conn_hostname(Bio, Hostname);
BIO_set_conn_int_port(Bio, &Port);
if (BIO_do_connect(Bio) > 0)
{
printf("Connected to '%s' using SSL\n", Hostname);
char Data[256];
char *Cmd = "A0001 CAPABILITY\r\n";
int w = SSL_write(Ssl, Cmd, strlen(Cmd));
if (w > 0)
{
printf("Wrote %i bytes.\n", w);
int r = SSL_read(Ssl, Data, sizeof(Data));
if (r > 0)
{
printf("Got %i bytes.\n", r);
}
else printf("SSL_read failed.\n");
}
else printf("SSL_write failed.\n");
}
else printf("BIO_do_connect failed.\n");
}
else printf("BIO_get_ssl failed.\n");
}
else printf("BIO_new_ssl_connect failed.\n");
if (Ssl)
{
SSL_shutdown(Ssl);
SSL_free(Ssl);
}
/* At this point I expect the socket should have disappeared, but it's
still there
hanging around in CLOSE_WAIT... why? */
SSL_CTX_free(Ctx);
}
return 0;
}
Thanks
--
Matthew Allen
______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager majord...@openssl.org
______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager majord...@openssl.org
