[nanomsg] Pub/Sub with IPv6 on a Mac
- From: Aaron Hillegass <aaron@xxxxxxxxxxxxxxxx>
- To: nanomsg@xxxxxxxxxxxxx
- Date: Fri, 11 Oct 2013 22:41:02 -0400
I've been working at getting a Pub/Sub system working where a subscriber finds
the publisher via Bonjour. Bonjour is returning an IPv6 address. This seems
to be causing trouble on nanomsg 0.2. At the moment, I'm running the publisher
and subscriber on the same machine -- so it is a IPv6 loopback address.
Here's the code stripped down (trimmed out the error checking -- all but the
nn_bind are successful)
int sock = nn_socket (AF_SP, NN_SUB);
int okWithV6 = 0;
nn_setsockopt(sock, NN_SOL_SOCKET, NN_IPV4ONLY, &okWithV6, sizeof
(okWithV6));
nn_setsockopt(sock, NN_SUB, NN_SUB_SUBSCRIBE, "", 0);
int endpoint = nn_bind(sock, "tcp://fe80::1:9876");
I get this error:
Can't assign requested address [49] (src/transports/tcp/btcp.c:382)
Here is the interesting part of the backtrace:
frame #2: 0x00007fff967b3bba libsystem_c.dylib`abort + 125
frame #3: 0x000000010000a8d9 BigWatch`nn_err_abort + 9 at err.c:33
frame #4: 0x0000000100018133 BigWatch`nn_btcp_handler [inlined]
nn_btcp_start_listening + 1283 at btcp.c:363
frame #5: 0x0000000100017fb6 BigWatch`nn_btcp_handler(self=<unavailable>,
src=<unavailable>, type=<unavailable>, srcptr=<unavailable>) + 902 at btcp.c:266
frame #6: 0x00000001000067ad BigWatch`nn_fsm_start(self=0x000000010030bcd0)
+ 45 at fsm.c:113
frame #7: 0x0000000100017b80 BigWatch`nn_btcp_create(hint=<unavailable>,
epbase=0x0000000100309b40) + 352 at btcp.c:157
frame #8: 0x0000000100003225 BigWatch`nn_ep_init(self=0x0000000100309ae0,
src=<unavailable>, sock=<unavailable>, eid=<unavailable>,
transport=0x0000000100026328, bind=1, addr=<unavailable>) + 149 at ep.c:74
frame #9: 0x0000000100005e87
BigWatch`nn_sock_add_ep(self=0x000000010030b670, transport=<unavailable>,
bind=<unavailable>, addr=0x00006080000adb96) + 87 at sock.c:433
frame #10: 0x0000000100004155 BigWatch`nn_global_create_ep(s=0,
addr=0x00006080000adb96, bind=1) + 325 at global.c:806
frame #11: 0x0000000100003fe6 BigWatch`nn_bind(s=<unavailable>,
addr=<unavailable>) + 38 at global.c:450
frame #12: 0x000000010000300e BigWatch`-[NanomsgReceiver
waitInBackgroundForURL:dataHandler:](self=0x000060800005a400,
_cmd=0x000000010001a636, urlString=0x0000608000057f70,
block=0x00007fff5fbfcc08) + 206 at NanomsgReceiver.m:68
Am I doing something wrong? I'd really appreciate any help I can get.
On the publish side, I'd really like to be publishing on all interfaces, but
this doesn't seem to be a legit URL:
int sock = nn_socket (AF_SP, NN_PUB);
int endpoint = nn_connect(sock, "tcp://*:9876");
Do I really need to specify the interface? (Like this "tcp://en1:9876")
--
Aaron Hillegass
Big Nerd Ranch, LLC.
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