I'm trying to communicate between a c#(5.0) and a python (3.9) application via ZeroMQ. For .Net I'm using NetMQ and for python PyZMQ.
I have no trouble letting two applications communicate, as long as they are in the same language
- c# app to c# app;
- python -> python;
- java -> java,
but trouble starts when I try to connect between different languages.
- java -> c# and reverse works fine as well [edited]
I do not get any errors, but it does not work either.
I first tried the PUB-SUB Archetype pattern, but as that didn't work, I tried REQ-REP, so some remainders of the "PUB-SUB"-version can still be found in the code.
My Python code looks like this :
def run(monitor: bool):
loop_counter: int = 0
context = zmq.Context()
# socket = context.socket(zmq.PUB)
# socket.bind("tcp://*:5557")
socket = context.socket(zmq.REP)
socket.connect("tcp://localhost:5557")
if monitor:
print("Connecting")
# 0 = Longest version, 1 = shorter version, 2 = shortest version
length_version: int = 0
print("Ready and waiting for incoming requests ...")
while True:
message = socket.recv()
if monitor:
print("Received message:", message)
if message == "long":
length_version = 0
elif message == "middle":
length_version = 1
else:
length_version = 2
sys_info = get_system_info(length_version)
"""if not length_version == 2:
length_version = 2
loop_counter += 1
if loop_counter == 15:
length_version = 1
if loop_counter > 30:
loop_counter = 0
length_version = 0"""
if monitor:
print(sys_info)
json_string = json.dumps(sys_info)
print(json_string)
socket.send_string(json_string)
My C# code :
static void Main(string[] args)
{
//using (var requestSocket = new RequestSocket(">tcp://localhost:5557"))
using (var requestSocket = new RequestSocket("tcp://localhost:5557"))
{
while (true) {
Console.WriteLine($"Running the server ...");
string msg = "short";
requestSocket.SendFrame(msg);
var message = requestSocket.ReceiveFrameString();
Console.WriteLine($"requestSocket : Received '{message}'");
//Console.ReadLine();
Thread.Sleep(1_000);
}
}
}
