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//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "convey.h"
#include "nng.h"
#include <assert.h>
#include <string.h>
#define APPENDSTR(m, s) nng_msg_append(m, s, strlen(s))
#define CHECKSTR(m, s) \
So(nng_msg_len(m) == strlen(s)); \
So(memcmp(nng_msg_body(m), s, strlen(s)) == 0)
struct evcnt {
nng_socket sock;
int readable;
int writeable;
int pipeadd;
int piperem;
int epadd;
int eprem;
int err;
};
void
bump(nng_event *ev, void *arg)
{
struct evcnt *cnt = arg;
assert(nng_event_socket(ev) == cnt->sock);
switch (nng_event_type(ev)) {
case NNG_EV_CAN_SND:
cnt->writeable = 1;
break;
case NNG_EV_CAN_RCV:
cnt->readable = 1;
break;
case NNG_EV_PIPE_ADD:
cnt->pipeadd = 1;
break;
case NNG_EV_PIPE_REM:
cnt->piperem = 1;
break;
case NNG_EV_ENDPT_ADD:
cnt->epadd = 1;
break;
case NNG_EV_ENDPT_REM:
cnt->eprem = 1;
break;
default:
assert(0);
break;
}
}
Main({
const char *addr = "inproc://test";
Test("Event Handling", {
Convey("Given a connected pair of pair sockets", {
nng_socket sock1;
nng_socket sock2;
struct evcnt evcnt1;
struct evcnt evcnt2;
nng_notify * notify1;
nng_notify * notify2;
So(nng_pair0_open(&sock1) == 0);
So(nng_pair0_open(&sock2) == 0);
memset(&evcnt1, 0, sizeof(evcnt1));
memset(&evcnt2, 0, sizeof(evcnt2));
evcnt1.sock = sock1;
evcnt2.sock = sock2;
Reset({
nng_close(sock1);
nng_close(sock2);
});
So(nng_listen(sock1, addr, NULL, NNG_FLAG_SYNCH) == 0);
So(nng_dial(sock2, addr, NULL, NNG_FLAG_SYNCH) == 0);
// Let everything connect.
nng_usleep(100000);
Convey("We can register callbacks", {
So((notify1 = nng_setnotify(sock1,
NNG_EV_CAN_SND, bump, &evcnt1)) !=
NULL);
So((notify2 = nng_setnotify(sock2,
NNG_EV_CAN_RCV, bump, &evcnt2)) !=
NULL);
Convey("They are called", {
nng_msg *msg;
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "abc");
So(nng_sendmsg(sock1, msg, 0) == 0);
// XXX: The current implementation
// is level rather than edge triggered.
// Think through the ramifications of
// this. Probably the msgq needs to
// toggle on reads.
// nng_usleep(20000);
// So(nng_recvmsg(sock2, &msg, 0) ==
// 0);
// CHECKSTR(msg, "abc");
// nng_msg_free(msg);
// The notify runs async...
nng_usleep(100000);
So(evcnt1.writeable == 1);
So(evcnt2.readable == 1);
});
Convey("We can unregister them", {
nng_unsetnotify(sock1, notify1);
So(1);
nng_unsetnotify(sock2, notify2);
So(1);
});
});
});
});
})
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