[zeromq-dev] zmq_setsockopt() returning invalid argument

Min miniway at gmail.com
Sun Feb 17 05:33:19 CET 2013


Hi

You need to set socket options before connect.

Thanks
Min

2013년 2월 17일 일요일에 suraj nellikar님이 작성:

> Hi,
> I am using zmq 3.2 library on Ubuntu (32 bit machine). I am trying to run
> a test PUB-SUB model but the client is failing to set the sockopt to
> ZMQ_SUBSCRIBE. Any idea what am I doing wrong here?
>
> Here's the snippet of the code.
> main() {
>     void *context = zmq_ctx_new();
>     void *req = zmq_socket(context,ZMQ_REQ);
>     void *sub = zmq_socket(context,ZMQ_SUBSCRIBE);
>
>     int rc = zmq_connect(req,"tcp://127.0.0.1:5555");
>     printf("req connect, rc = %d\n",rc);
>     rc = zmq_connect(sub,"tcp://192.168.72.130:6666");
>     printf("sub connect, rc = %d\n",rc);
>     uint64_t affinity = 1;
>     rc = zmq_setsockopt (sub, ZMQ_AFFINITY, &affinity, sizeof affinity);
>     //This works only when I use uint64_t for affinity. It fails for int.
>     printf("setsockopt, rc = %d, errno = %s\n",rc,strerror(errno));
>     rc = zmq_setsockopt(sub,ZMQ_SUBSCRIBE,"",0);
>            //This always fails! rc is always -1
>     printf("setsockopt, ZMQ_SUBSCRIBE = %d,rc = %d, errno =
> %s\n",ZMQ_SUBSCRIBE,rc,strerror(errno));
>
> Thanks.
>
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