[zeromq-dev] assertion failed on zsocket_connect with ZMQ_REQ

[Pieter Hintjens]

The "resource temporarily unavailable" error probably means your
network is not ready, so the network address "127.0.0.1" is not valid.

Please make a minimal test case (create socket, connect) just as a
sanity check for your system, and see what it takes to reproduce the
problem.

On Tue, May 19, 2015 at 11:58 AM, Bachmair Florian - flexSolution GmbH
<florian.bachmair at flexsolution.eu> wrote:
> but the assertion failed I get with that error
>
> "Das Argument ist ungültig" (The Argument is invalid)
>
> Am 19.05.2015 um 11:56 schrieb Bachmair Florian - flexSolution GmbH:
>> Thank you!
>>
>>
>> I get "Die Ressource ist zur Zeit nicht verfügbar" (The ressource is
>> temporarily not available)
>>
>> what does that mean? What do I wrong?
>>
>> Am 19.05.2015 um 11:34 schrieb Pieter Hintjens:
>>> Use 'puts ()' to print a string to the console.
>>>
>>> On Tue, May 19, 2015 at 11:28 AM, Bachmair Florian - flexSolution GmbH
>>> <florian.bachmair at flexsolution.eu> wrote:
>>>> ok that was not (my only) problem.
>>>> It is also during execution.
>>>>
>>>> How can I print the strerror?
>>>>
>>>> int rc = zsocket_connect(req, "%s", addr);
>>>> zmq_strerror (zmq_errno ());
>>>> assert(rc == 0);
>>>>
>>>> does not print anything for me
>>>>
>>>> Am 19.05.2015 um 11:23 schrieb Bachmair Florian - flexSolution GmbH:
>>>>> like that?
>>>>>
>>>>> int rc = zsocket_connect(req, "%s", addr);
>>>>> zmq_strerror (zmq_errno ());
>>>>> assert(rc == 0);
>>>>>
>>>>> this does not work.
>>>>>
>>>>> But I think I found the problem.
>>>>> I start both applications at the same time, so the socket may not yet be initialized by the oponent.
>>>>>
>>>>>
>>>>>
>>>>> Am 19.05.2015 um 10:22 schrieb Pieter Hintjens:
>>>>>> The problem is that the endpoint is rejected by your operating system
>>>>>> as "invalid" for some reason; possibly networking is switched off. You
>>>>>> can print strerror (errno) or zmq_strerror (zmq_errno ()) to see the
>>>>>> actual error message.
>>>>>>
>>>>>> On Tue, May 19, 2015 at 10:14 AM, Bachmair Florian - flexSolution GmbH
>>>>>> <florian.bachmair at flexsolution.eu> wrote:
>>>>>>> 'addr' is tcp://127.0.0.1:9998
>>>>>>> so the problem may be that the other side of the socket has crashed?
>>>>>>>
>>>>>>> I see that I do not close the 'req' Socket, could this be a problem?
>>>>>>>
>>>>>>> Am 19.05.2015 um 09:59 schrieb Pieter Hintjens:
>>>>>>>> zsocket_connect does not block. It returns -1 if the endpoint is
>>>>>>>> invalid, which presumably it is. Could you tell us what the value of
>>>>>>>> 'addr' is ?
>>>>>>>>
>>>>>>>> On Tue, May 19, 2015 at 9:40 AM, Bachmair Florian - flexSolution GmbH
>>>>>>>> <florian.bachmair at flexsolution.eu> wrote:
>>>>>>>>> hi!
>>>>>>>>>
>>>>>>>>> Sometimes I get an assertion failed in my code.
>>>>>>>>> Why is this? shouldn't it block, till a connection is established?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> NIEXPORT jstring JNICALL Java_eu_flexsolution_core_JNI_1zeromq_request(
>>>>>>>>>              JNIEnv *env, jobject object, jstring address, jstring timestamp,
>>>>>>>>>              jstring format, jstring command, jstring message) {
>>>>>>>>>          const char* addr = (*env)->GetStringUTFChars(env, address, 0);
>>>>>>>>>          const char* ts = (*env)->GetStringUTFChars(env, timestamp, 0);
>>>>>>>>>          const char* f = (*env)->GetStringUTFChars(env, format, 0);
>>>>>>>>>          const char* cmd = (*env)->GetStringUTFChars(env, command, 0);
>>>>>>>>>          const char* msg = (*env)->GetStringUTFChars(env, message, 0);
>>>>>>>>>
>>>>>>>>>          printf("REQ:%s:%s:%s:%s:%s\n", addr,cmd, msg, f, ts);
>>>>>>>>>          fflush(stdout);
>>>>>>>>>          void *req = zsocket_new(context, ZMQ_REQ);
>>>>>>>>>          int rc = zsocket_connect(req, "%s", addr);
>>>>>>>>>          assert(rc == 0);
>>>>>>>>>          s_sendmore(req, ts);
>>>>>>>>>          s_sendmore(req, f);
>>>>>>>>>          s_sendmore(req, cmd);
>>>>>>>>>          s_send(req, msg);
>>>>>>>>>
>>>>>>>>>          char* reply = s_recv(req);
>>>>>>>>>          printf("reply: %s\n", reply);
>>>>>>>>>          fflush(stdout);
>>>>>>>>>
>>>>>>>>>          (*env)->ReleaseStringUTFChars(env, timestamp, ts);
>>>>>>>>>          (*env)->ReleaseStringUTFChars(env, format, f);
>>>>>>>>>          (*env)->ReleaseStringUTFChars(env, message, msg);
>>>>>>>>>
>>>>>>>>>          jstring ret = (*env)->NewStringUTF(env, reply);
>>>>>>>>>          return ret;
>>>>>>>>> }
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> zeromq-dev mailing list
>>>>>>>>> zeromq-dev at lists.zeromq.org
>>>>>>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> zeromq-dev mailing list
>>>>>>>> zeromq-dev at lists.zeromq.org
>>>>>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>>>>> _______________________________________________
>>>>>>> zeromq-dev mailing list
>>>>>>> zeromq-dev at lists.zeromq.org
>>>>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>>>> _______________________________________________
>>>>>> zeromq-dev mailing list
>>>>>> zeromq-dev at lists.zeromq.org
>>>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>>> _______________________________________________
>>>>> zeromq-dev mailing list
>>>>> zeromq-dev at lists.zeromq.org
>>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>> _______________________________________________
>>>> zeromq-dev mailing list
>>>> zeromq-dev at lists.zeromq.org
>>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>> _______________________________________________
>>> zeromq-dev mailing list
>>> zeromq-dev at lists.zeromq.org
>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>> _______________________________________________
>> zeromq-dev mailing list
>> zeromq-dev at lists.zeromq.org
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev