Python Error Errno 111 Connection Refused
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Socket.error Errno 111 Connection Refused Python Smtp
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Join them; it only takes a minute: Sign up Why am I getting the error “connection refused” in Python? (Sockets) up vote 28 down vote favorite 9 I'm new to Sockets, please excuse my complete lack of understanding. I errno 111 connection refused linux have a server script(server.py): #!/usr/bin/python import socket #import the socket module s = socket.socket() #Create a socket object host = socket.gethostname() #Get the local machine name port = 12397 # Reserve a port for your service s.bind((host,port)) #Bind to the port s.listen(5) #Wait for the client connection while True: c,addr = s.accept() #Establish a connection with the client print "Got connection from", addr c.send("Thank you for connecting!") c.close() and client script (client.py): #!/usr/bin/python import socket #import socket module python socket connection refused exception s = socket.socket() #create a socket object host = '192.168.1.94' #Host i.p port = 12397 #Reserve a port for your service s.connect((host,port)) print s.recv(1024) s.close I go to my desktop terminal and start the script by typing: python server.py after which, I go to my laptop terminal and start the client script: python client.py but I get the following error: File "client.py", line 9, in s.connect((host,port)) File "/usr/lib/python2.7/socket.py", line 224, in meth return getattr(self._sock,name)(*args) socket.error: [Errno 111] Connection refused I've tried using different port numbers to no avail. However, I was able to get the host name using the same ip and the gethostname() method in the client script and I can ping the desktop (server). python sockets share|improve this question asked Apr 21 '13 at 11:49 Sheldon 1,98463972 Try using telnet. It often helps me. Type in your terminal telnet [IP] 12397 (replace IP with what gethostname() returns). If you do it so you should see Thank you for connecting. If not, please show me what telnet returned. –Matt3o12 Apr 21 '13 at 11:56 telnet works for me, but every command I send creates a HTTP/1.1 400 Bad Request and closes connection. –Patrizio Bertoni Mar 20 '15 at 17:21 Stackoverflow's question also helps some time. –Ajay Gupta Sep 9 '15 at 15:01 add a comment| 3 Answers 3 active oldest votes up vote 41 down vo
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community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Python - error: [Errno 111] Connection refused and error: [Errno 98] Address already in use http://stackoverflow.com/questions/16130786/why-am-i-getting-the-error-connection-refused-in-python-sockets up vote 0 down vote favorite I'm in the process of learning how to use threads and socket connections. I've found literature and examples online on how threads and socket connections work. Now I'm trying to merge the two together to create a simple send/receive application. So here is what I put together as an example: main.py, import server import client import threading def main(): try: threadA = threading.Thread(target=server.serv) threadA.start() threadB http://stackoverflow.com/questions/34073816/python-error-errno-111-connection-refused-and-error-errno-98-address-alr = threading.Thread(target=client.client) threadB.start() except: print "Got an Error" if __name__ == '__main__': main() server.py #!/usr/bin/python # This is server.py file import socket # Import socket module def serv(): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Create a socket object host = socket.gethostname() # Get local machine name port = 12920 # Reserve a port for your service. s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((host, port)) # Bind to the port s.listen(5) # Now wait for client connection. #while True: c, addr = s.accept() # Establish connection with client. print 'Got connection from', addr c.send('Thank you for connecting') s.shutdown(1) c.close() # Close the connection client.py #!/usr/bin/python # This is client.py file import socket # Import socket module def client(): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Create a socket object s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) host = socket.gethostname() # Get local machine name port = 12920 # Reserve a port for your service. s.connect((host, port)) print s.recv(1024) s.shutdown(1) s.close # Close the socket when done I able to run the application for the first time without any errors. Here is the output: Got connection from ('172.17.132.98', 50759) Thank you for connecting When I run the application again (for the second time consecutive), I receive the following error: Traceback (most recent call last): File "/usr/lib64/python2.7/threading.py", line 813, in __bootstrap_inner self.run() File "/usr/lib64/python2.
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies http://stackoverflow.com/questions/32047759/python-error-errno-111-connection-refused of this site About Us Learn more about Stack Overflow the company https://xinyustudio.wordpress.com/2012/05/23/python-socket-example-to-be-the-simplest/ Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a connection refused minute: Sign up Python error: [Errno 111] Connection refused up vote 0 down vote favorite I am trying to send and receive data using TCP connection using Python. My server and client are in the same file, defined and used as follows. In the constructor, I define the server as: self.sock_in = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock_in.bind((self.host_ip, self.host_port)) self.sock_in.listen(1) Do not worry about the 111 connection refused host_ip and host_port variables, they are all fine. In a function, I am trying to send data as follows: sock_out = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # TCP Connection sock_out.connect((self.remote_ip, self.remote_port)) sock_out.send(self.navigation_data.get_message()) sock_out.close() And this is my main: def main(self): rospy.logwarn("Starting...") while not rospy.is_shutdown(): conn = self.sock_in.accept() try: recv_buffer = conn.recv(BUFFERSIZE_IN) if recv_buffer != "": msg = recv_buffer.decode('utf-8') msg_type = msg[:msg.find(',')] if msg_type == self.pilot_control.MESSAGE_ID: self.pilot_control_handler(msg, self.pilot_control_publisher) else: rospy.logwarn("Received an unimplemented message type '%s'", msg_type) except socket.error as socket_error: rospy.logerr("SocketError: %s", str(socket_error)) And the error I get is: line 230, in send_83b_package sock_out.connect((self.remote_ip, self.remote_port)) File "/usr/lib/python2.7/socket.py", line 224, in meth return getattr(self._sock,name)(*args) error: [Errno 111] Connection refused I put some print commands to see where it collapses, and apparently it does not run the accept command. Until there I can see the print commands working, but after the accept method nothing is printed, which means it collapses there. I suspect the problem is about synchronization. That is, the server does not start fast enough. Any thoughts? EDIT: One of the suggestions was to run the server on a separate thread, which I tried as follows: def my_tcp_se
Images in a UI (Part I: Using NokiaQt) → Python Socket example: the simplestexample 23 May The python socket component is extremely easy to use, and this simplest example demonstrated its typical use. This is simplest, since both the server and client are the local machine: On the Server Side: On the Client Side: First run the SocketServer.py, and make sure the server is ready to listen/receive sth Then the client send info to the server; After the server received sth, it terminates That is it. Downloads source files: SocketClient.py | SocketServer.py. Share this:PrintTwitterFacebookPinterestRedditGoogleLinkedInLike this:Like Loading... Related 6 Comments Posted by xinyustudio on May 23, 2012 in Programming Tags: example, Python, simplest example, Socket ← Using Python & OpenCV to control WebCam, black window: problem and troubleshooting in a single codeline C++: Show Full Screen Images in a UI (Part I: Using NokiaQt) → 6 responses to “Python Socket example: the simplestexample” roberweb March 4, 2013 at 3:27 am I get an error when I run the client: Traceback (most recent call last): File "SocketClient.py", line 7, in