CODEWITHSUNDEEP
pythontcpclient
Richard
Richard

Reputation: 15892

connection refused from server unit I reset client machine

Below is the code I am running within a service. For the most part the script runs fine for days/weeks until the script hiccups and crashes. I am not so worried about the crashing part as I can resolve the cause from the error logs an patch appropriately. The issue I am facing is that sometimes when the service restarts and tries to connect to the server again, it gets a (10061, 'Connection refused') error, so that the service is unable to start up again. The bizarre part is that there is no python processes running when connections are being refused. IE no process with image name "pythonw.exe" or "pythonservice.exe." It should be noted that I am unable to connect to the server with any other machine as well until I reset computer which runs the client script. The client machine is running python 2.7 on a windows server 2003 OS. It should also be noted that the server is coded on a piece of hardware of which I do not have access to the code. 

try:            
        EthernetConfig = ConfigParser()
        EthernetConfig.read('Ethernet.conf')

        HOST = EthernetConfig.get("TCP_SERVER", "HOST").strip()
        PORT = EthernetConfig.getint("TCP_SERVER", "PORT")

        lp = LineParser()
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

        s.connect((HOST, PORT))
        reader = s.makefile("rb")

        while(self.run == True):

            line = reader.readline()
            if line:
                line = line.strip()
                lp.parse(line)
except:

        servicemanager.LogErrorMsg(traceback.format_exc()) # if error print it to event log
        s.shutdown(2)
        s.close()
        os._exit(-1)

Upvotes: 0

Views: 1247

Answers (2)

Richard
Richard

Reputation: 15892

Turns out that Network Admin had the port closed that I was trying to connect to. It is open for one IP which belongs to the server. Problem is that the server has two network cards with two separate IP's. Issue is now resolved.

Upvotes: 0

Some programmer dude
Some programmer dude

Reputation: 409442

Connection refused is an error meaning that the program on the other side of the connection is not accepting your connection attempt. Most probably it hasn't noticed you crashing, and hasn't closed its connection.

What you can do is simply sleep a little while (30-60 seconds) and try again, and do this in a loop and hope the other end notices that the connection in broken so it can accept new connections again.

Upvotes: 1

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