Problem: libzmtp stack does not connect

[hintjens]

In https://github.com/hintjens/zbroker/commit/6d8a1060787c2e07d77664b1574aab5ebcde2d2a I pushed a new client stack for zpipes, which uses libzmtp.

The selftest fails in clients/zpipes_client.c:72:

int rc = zmtp_dealer_ipc_connect (self->dealer, endpoint);
assert (rc == 0);

[hurtonm]

I run "make check" and git the following error: lt-zbroker_selftest: zpipes_server_engine.h:1565: s_server_control_message: Assertion `self->port != -1' failed. /bin/bash: line 5: 21180 Aborted ${dir}$tst FAIL: zbroker_selftest

Any idea why?

[hintjens]

It's doing a socket bind that's failing. You can print out the endpoint, may be something on your box?

On Tue, May 6, 2014 at 9:00 AM, Martin Hurton notifications@github.comwrote:

I run "make check" and git the following error: lt-zbroker_selftest: zpipes_server_engine.h:1565: s_server_control_message: Assertion `self->port != -1' failed. /bin/bash: line 5: 21180 Aborted ${dir}$tst FAIL: zbroker_selftest

Any idea why?

— Reply to this email directly or view it on GitHubhttps://github.com/zeromq/zbroker/issues/69#issuecomment-42272750 .

[hurtonm]

zmtp_dealer_ipc_connect () fails because there is no one listening on specified endpoint. Please note that libzmtp does not support reconnection so when you created listener after you try to connect, the connect will fail. I may implement reconnect functionality in libzmtp if necessary.

[hintjens]

Ah, okay... that helps. Thanks On May 7, 2014 7:46 AM, "Martin Hurton" notifications@github.com wrote:

zmtp_dealer_ipc_connect () fails because there is no one listening on specified endpoint. Please note that libzmtp does not support reconnection so when you created listener after you try to connect, the connect will fail. I may implement reconnect functionality in libzmtp if necessary.

— Reply to this email directly or view it on GitHubhttps://github.com/zeromq/zbroker/issues/69#issuecomment-42391664 .

[hintjens]

Have you implemented abstract IPC endpoints? Perhaps this is the problem, since I do start the broker before the client test. The connection is like this:

snprintf (endpoint, 255, "ipc://@/zpipes/%s", server_name);
endpoint [255] = 0;
int rc = zmtp_dealer_ipc_connect (self->dealer, endpoint);
assert (rc == 0);

The syntax of abstract IPC endpoints comes from libzmq and it's useful because it doesn't create files. I'll test with classic IPC endpoints anyhow.

[hintjens]

OK, I've got the connection working. It doesn't accept a 'standard' endpoint, i.e. with "ipc://", rather it expects a pathname.