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Created attachment 274056 [details] output windows I'm try to publish my data via MQTT in C and I'm use the sample code of ( Paho MQTT C Client Library link [ http://www.eclipse.org/paho/files/mqttdoc/MQTTClient/html/pubsync.html ]) and after running code I'm getting Error that "connection failed return code -1 [ MQTTCLIENT_FAILURE ] sending output windows's picture Thank you
The GitHub repository https://github.com/eclipse/paho.mqtt.c/issues should be used for reporting issues. Thanks.