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examples/02_subscribe_simple_threaded.jl

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+# Read 20 messages in topic "test/..." from the public broker test.mosquitto.org
+# This example assumes julia was started with >1 thread
+# e.g., julia -t 2 subscribe.jl
+if Threads.nthreads()<2 
+    println("Start julia using atleast 2 threads to run this example:")
+    println("julia -t 2 subscribe.jl")
+    exit(1)
+end
+
+using Mosquitto
+
+# Connect to a broker, also starts loop if Threads.nthreads()>1
+client = Client("test.mosquitto.org", 1883)
+
+# subscribe to topic "test"
+subscribe(client, "test/#")
+
+# Messages will be put in
+# the channel Mosquitto.messages_channel.
+for i = 1:20
+    # Take the message on arrival
+    temp = take!(Mosquitto.messages_channel)
+    # Do something with the message
+    println("Message $i of 20:")
+    println("\ttopic: $(temp.topic)\tmessage:$(String(temp.payload))")
+end
+
+# Close everything
+disconnect(client)