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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 "core/nng_impl.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)
Main({
const char *addr = "inproc://test";
nni_init();
Test("PUB/SUB pattern", {
Convey("We can create a PUB socket", {
nng_socket pub;
So(nng_open(&pub, NNG_PROTO_PUB) == 0);
Reset({
nng_close(pub);
})
Convey("Protocols match", {
So(nng_protocol(pub) == NNG_PROTO_PUB);
So(nng_peer(pub) == NNG_PROTO_SUB);
})
Convey("Recv fails", {
nng_msg *msg;
So(nng_recvmsg(pub, &msg, 0) == NNG_ENOTSUP);
})
})
Convey("We can create a SUB socket", {
nng_socket sub;
So(nng_open(&sub, NNG_PROTO_SUB) == 0);
Reset({
nng_close(sub);
})
Convey("Protocols match", {
So(nng_protocol(sub) == NNG_PROTO_SUB);
So(nng_peer(sub) == NNG_PROTO_PUB);
})
Convey("Send fails", {
nng_msg *msg;
So(nng_msg_alloc(&msg, 0) == 0);
So(nng_sendmsg(sub, msg, 0) == NNG_ENOTSUP);
nng_msg_free(msg);
})
})
Convey("We can create a linked PUB/SUB pair", {
nng_socket pub;
nng_socket sub;
So(nng_open(&pub, NNG_PROTO_PUB) == 0);
So(nng_open(&sub, NNG_PROTO_SUB) == 0);
Reset({
nng_close(pub);
nng_close(sub);
})
// Most consumers will usually have the pub listen,
// and the sub dial. However, this creates a problem
// for our tests, since we can wind up trying to push
// data before the pipe is fully registered (the
// accept runs in an asynch thread.) Doing the reverse
// here ensures that we won't lose data.
So(nng_listen(sub, addr, NULL, NNG_FLAG_SYNCH) == 0);
So(nng_dial(pub, addr, NULL, NNG_FLAG_SYNCH) == 0);
Convey("Sub can subscribe", {
So(nng_setopt(sub, NNG_OPT_SUBSCRIBE, "ABC", 3) == 0);
So(nng_setopt(sub, NNG_OPT_SUBSCRIBE, "", 0) == 0);
Convey("Unsubscribe works", {
So(nng_setopt(sub, NNG_OPT_UNSUBSCRIBE, "ABC", 3) == 0);
So(nng_setopt(sub, NNG_OPT_UNSUBSCRIBE, "", 0) == 0);
So(nng_setopt(sub, NNG_OPT_UNSUBSCRIBE, "", 0) == NNG_ENOENT);
So(nng_setopt(sub, NNG_OPT_UNSUBSCRIBE, "HELLO", 0) == NNG_ENOENT);
})
})
Convey("Pub cannot subscribe", {
So(nng_setopt(pub, NNG_OPT_SUBSCRIBE, "", 0) == NNG_ENOTSUP);
})
Convey("Subs can receive from pubs", {
nng_msg *msg;
uint64_t rtimeo;
So(nng_setopt(sub, NNG_OPT_SUBSCRIBE, "/some/", strlen("/some/")) == 0);
rtimeo = 50000; // 50ms
So(nng_setopt(sub, NNG_OPT_RCVTIMEO, &rtimeo, sizeof (rtimeo)) == 0);
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "/some/like/it/hot");
So(nng_sendmsg(pub, msg, 0) == 0);
So(nng_recvmsg(sub, &msg, 0) == 0);
CHECKSTR(msg, "/some/like/it/hot");
nng_msg_free(msg);
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "/somewhere/over/the/rainbow");
CHECKSTR(msg, "/somewhere/over/the/rainbow");
So(nng_sendmsg(pub, msg, 0) == 0);
So(nng_recvmsg(sub, &msg, 0) == NNG_ETIMEDOUT);
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "/some/day/some/how");
CHECKSTR(msg, "/some/day/some/how");
So(nng_sendmsg(pub, msg, 0) == 0);
So(nng_recvmsg(sub, &msg, 0) == 0);
CHECKSTR(msg, "/some/day/some/how");
nng_msg_free(msg);
})
Convey("Subs without subsciptions don't receive", {
uint64_t rtimeo = 50000; // 50ms
nng_msg *msg;
So(nng_setopt(sub, NNG_OPT_RCVTIMEO, &rtimeo, sizeof (rtimeo)) == 0);
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "/some/don't/like/it");
So(nng_sendmsg(pub, msg, 0) == 0);
So(nng_recvmsg(sub, &msg, 0) == NNG_ETIMEDOUT);
})
Convey("Subs in raw receive", {
uint64_t rtimeo = 50000; // 500ms
int raw = 1;
nng_msg *msg;
So(nng_setopt(sub, NNG_OPT_RCVTIMEO, &rtimeo, sizeof (rtimeo)) == 0);
So(nng_setopt(sub, NNG_OPT_RAW, &raw, sizeof (raw)) == 0);
So(nng_msg_alloc(&msg, 0) == 0);
APPENDSTR(msg, "/some/like/it/raw");
So(nng_sendmsg(pub, msg, 0) == 0);
So(nng_recvmsg(sub, &msg, 0) == 0);
CHECKSTR(msg, "/some/like/it/raw");
nng_msg_free(msg);
})
})
})
nni_fini();
})
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