[zeromq-dev] Assertion failed: false (src/pipe.cpp:429) on disconnecting a SUB Socket.

[Bachmair Florian - flexSolution GmbH]

addapted my code, so any call (concerning the zmq socket) now is on the 
same thread, but still the same problem!

On 2017-05-09 16:16, Luca Boccassi wrote:
> It is, as the documentation says sockets are not thread safe and must
> be created, used and closed from the same thread
>
> http://api.zeromq.org/4-2:zmq-socket
>
> On Tue, 2017-05-09 at 16:00 +0200, Florian Bachmair wrote:
>> yes it is, but not at the same time. is that a problem?
>>
>>
>> On 09.05.2017 12:29, Luca Boccassi wrote:
>>> Is the same socket being used from multiple thread?
>>>
>>> On Tue, 2017-05-09 at 08:01 +0200, Bachmair Florian - flexSolution
>>> GmbH
>>> wrote:
>>>> further output
>>>>
>>>> Assertion failed: false (src/pipe.cpp:429)
>>>>
>>>> #0  0x63835c6c in /home/flex/core-
>>>> 1.0.0/emerson2/lib/native/libzmq.so
>>>> (zmq::zmq_abort(char const*)+0x8)
>>>> #1  0x63846718 in /home/flex/core-
>>>> 1.0.0/emerson2/lib/native/libzmq.so
>>>> (zmq::pipe_t::terminate(bool)+0x84)
>>>> #2  0x63857e58 in /home/flex/core-
>>>> 1.0.0/emerson2/lib/native/libzmq.so
>>>> (zmq::socket_base_t::term_endpoint(char const*)+0x19c)
>>>> #3  0x638bfc0c in /home/flex/core-
>>>> 1.0.0/emerson2/lib/native/libczmq.so
>>>> (zsock_disconnect+0x48)
>>>>
>>>>
>>>> On 2017-05-09 07:23, Bachmair Florian - flexSolution GmbH wrote:
>>>>> Hi!
>>>>> I'm using a JNI Wrapper to use czmq.(with the latest libzmq and
>>>>> czmq
>>>>> from git,compiled yesterday on an arm)
>>>>> Don't know if this is just a coincidents but this is how I
>>>>> reproduce
>>>>> the error:
>>>>>
>>>>>     * start all Applications(6) (on the same host) they connect
>>>>> to
>>>>> each
>>>>>       other via TCP automatically
>>>>>     * If I restart 2 applications at the same time, they may get
>>>>> new
>>>>>       Ports, the other applications do recognize that(every
>>>>> Application
>>>>>       announces their ports via multicast) and disconnect from
>>>>> the
>>>>> old,
>>>>>       now invalid socket
>>>>>     * 1-2 of the Applications crashes with the error Assertion
>>>>> failed:
>>>>>       false (src/pipe.cpp:429) when they try to close the
>>>>> socket.
>>>>>
>>>>> Any Idea what I am doing wrong here?
>>>>>
>>>>>
>>>>> JNIEXPORT void JNICALL
>>>>> Java_lib_zmq_ZeroMQNative_native_1disconnect(JNIEnv * env,
>>>>> jobject
>>>>> object, jstring ip, jint port) {
>>>>> // ===============================================
>>>>> // Convert Java Objects to C
>>>>> // ===============================================
>>>>>       puts("debug 1");
>>>>>       fflush(stdout);
>>>>>       const char* c_ip = (*env)->GetStringUTFChars(env, ip, 0);
>>>>>       printf("debug 2: %s:%d \n",c_ip,port);
>>>>>       fflush(stdout);
>>>>> // ===============================================
>>>>> // Disconnect from tcp://ip:port
>>>>> // ===============================================
>>>>>       zsock_disconnect(subscriber, "tcp://%s:%d", c_ip, port);
>>>>>       //Assertion failed: false (src/pipe.cpp:429)
>>>>>
>>>>>       puts("debug 3");
>>>>>       fflush(stdout);
>>>>> // ===============================================
>>>>> // Free Resources
>>>>> // ===============================================
>>>>>       (*env)->ReleaseStringUTFChars(env, ip, c_ip);
>>>>>       puts("debug 4");
>>>>>       fflush(stdout);
>>>>> }
>>>>>
>>>>>
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