Re: [Libevent-users] bufferevent with openssl server

If I comment out the call bufferevent_openssl_filter_new(), then the client can finish handshake, but the server read/write callback not working.

The code as above (i.e., with the bufferevent_openssl_filter_new() call) enters an infinite loop (from the USE_DEBUG build).

[debug] event_add: event: 0xe1bfe0 (fd 6), EV_READ call 0x7fca51fec1b0

[debug] Epoll ADD(1) on fd 6 okay. [old events were 0; read change was 1; write change was 0]

[debug] event_add: event: 0xe1af40 (fd 7), EV_READ call 0x7fca51ff94ce

[debug] Epoll ADD(1) on fd 7 okay. [old events were 0; read change was 1; write change was 0]

[debug] event_add: event: 0xe1a740 (fd 2), call 0x402044

[debug] evsig_add: 2: changing signal handler

[debug] _evsig_set_handler: evsignal (2) >= sh_old_max (0), resizing

[debug] event_add: event: 0xe1be38 (fd 5), EV_READ call 0x7fca52003839

[debug] Epoll ADD(1) on fd 5 okay. [old events were 0; read change was 1; write change was 0]

[debug] epoll_dispatch: epoll_wait reports 1

[debug] event_active: 0xe1af40 (fd 7), res 2, callback 0x7fca51ff94ce

[debug] event_process_active: event: 0xe1af40, EV_READ call 0x7fca51ff94ce

[debug] event_add: event: 0xe1ca80 (fd 8), EV_READ call 0x7fca51fd5793

[debug] Epoll ADD(1) on fd 8 okay. [old events were 0; read change was 1; write change was 0]

[debug] event_add: event: 0xe1cb08 (fd 8), EV_WRITE call 0x7fca51fd5793

[debug] Epoll MOD(5) on fd 8 okay. [old events were 2; read change was 0; write change was 1]

[debug] event_add: event: 0xe1ca80 (fd 8), EV_READ call 0x7fca51fd5793

[debug] event_add: event: 0xe1cb08 (fd 8), EV_WRITE call 0x7fca51fd5793

[debug] epoll_dispatch: epoll_wait reports 1

[debug] event_active: 0xe1ca80 (fd 8), res 2, callback 0x7fca51fd5793

[debug] event_active: 0xe1cb08 (fd 8), res 4, callback 0x7fca51fd5793

[debug] event_process_active: event: 0xe1ca80, EV_READ call 0x7fca51fd5793

[debug] event_del: 0xe1cb08 (fd 8), callback 0x7fca51fd5793

[debug] Epoll MOD(1) on fd 8 okay. [old events were 6; read change was 0; write change was 2]

[debug] event_add: event: 0xe1ca80 (fd 8), EV_READ call 0x7fca51fd5793

[debug] epoll_dispatch: epoll_wait reports 1

[debug] event_active: 0xe1ca80 (fd 8), res 2, callback 0x7fca51fd5793

[debug] event_process_active: event: 0xe1ca80, EV_READ call 0x7fca51fd5793

[debug] event_del: 0xe1cb08 (fd 8), callback 0x7fca51fd5793

[debug] event_add: event: 0xe1ca80 (fd 8), EV_READ call 0x7fca51fd5793

[debug] epoll_dispatch: epoll_wait reports 1

[debug] event_active: 0xe1ca80 (fd 8), res 2, callback 0x7fca51fd5793

[debug] event_process_active: event: 0xe1ca80, EV_READ call 0x7fca51fd5793

[debug] event_del: 0xe1cb08 (fd 8), callback 0x7fca51fd5793

( and continues ...)

On Wed, Feb 2, 2011 at 1:17 PM, Wayne Shao <wshao99@xxxxxxxxx> wrote:

I changed it to BUFFEREVENT_SSL_ACCEPTING. The read/write callbacks are still not invoked.

Is there an example SSL server anywhere?

On Wed, Feb 2, 2011 at 12:44 PM, Nick Mathewson <nickm@xxxxxxxxxxxxx> wrote:

On Wed, Feb 2, 2011 at 2:27 PM, Wayne Shao <wshao99@xxxxxxxxx> wrote:
> Hi,
> I tried to setup an SSL server with libevent. But the read/write callbacks
> are not invoked after the handshake phase.
> Please see the code below.
> Thanks,
> W Shao

I think the problem is using BUFFEREVENT_SSL_OPEN. When you get the
connection, it *isn't* an open SSL connection, so you need to pass in
BUFFEREVENT_SSL_ACCEPTING.
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--
W. Shao