Okey. Now i got no more memory leaks when I put the SSL code in main.
However, if i try to put the exact same code in a thread the memory leak is
back.
Here is the essential code I'm using;
void lcserver::start()
{
SSL_library_init();
SSL_load_error_strings();
method = SSLv23_server_method();
ctx = SSL_CTX_new(method);
Some windows socket code...
while(acceptsocket = accept(listensocket,(sockaddr*)&sin,&len))
{
struct clientinfo *client;
client = new struct
clientinfo(acceptsocket,sin.sin_addr.s_addr,clientid++,this,rooms[0]->getthis(),ctx);
client->M1();
}
}
void clientinfo::M1()
{
CreateThread(0,0,(LPTHREAD_START_ROUTINE)M2,(LPVOID)this,0,0);
}
void clientinfo::M2(LPVOID param)
{
clientinfo* Call = (clientinfo*)param;
Call->listenfor();
delete Call;
return;
}
void clientinfo::listenfor()
{
SSL_set_bio(ssl,bio,bio);
SSL_accept(ssl);
while(SSL_shutdown(ssl) == 0)
;
SSL_free(ssl);
ERR_remove_state(0);
}
Just running this code which shouldn't leave any allocated memory, about 12
kb ram is still allocated.
2009/5/5 Nikos Balkanas <nbalka...@gmail.com>
> Hi,
>
> Check the return value of SSL_shutdown(ssl). Sometimes it needs up to 4
> iterations to complete due to internal state machine. It completes when
> the value != 0. Hope it helps.
>
> BR,
> Nikos
>
> ----- Original Message -----
> *From:* Fabian Bergmark <fabian.bergm...@gmail.com>
> *To:* openssl-users@openssl.org
> *Sent:* Tuesday, May 05, 2009 9:13 PM
> *Subject:* Openssl Memory leak
>
> Hi
>
> I am currently writing a Chat application using the Openssl library for
> encryption. It's a multi-thread application and every client is managed by a
> different thread.
> However, ever since I implemented Openssl there seams to be a memory leak
> of around 10 kb.
> My openssl-code code is looking like following:
>
> SSL_set_bio(ssl,bio,bio);
> SSL_accept(ssl);
> SSL_shutdown(ssl);
> SSL_free(ssl);
>
> where bio and ssl is class objects where BIO is set like
>
> bio = BIO_new_socket(s,BIO_NOCLOSE)
>
> The increased memory does not occur before SSL_accept(ssl). The first time
> a client connect about a 100 kb is allocated, which I suppose is due to some
> initialising function. For each new client about 0-20 kb are still allocated
> after
>
> SSL_shutdown(ssl);
> SSL_free(ssl);
>
> is issued. Is there some cleanup functions im forgetting?
>
> I am using windows btw.
>
>
