[zeromq-dev] assertion failed on zsocket_connect with ZMQ_REQ

[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;
>>>>>>> }
>>>>>>>
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