Client Error Connection Reset By Peer Errno = 104
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Socket Error Errno 104 Connection Reset By Peer
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Python Socket Error Errno 104 Connection Reset By Peer
Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Connection reset by peer [errno 104] in socket.error errno 104 connection reset by peer s3 Python 2.7 up vote 0 down vote favorite I've seen and read a lot about this particular issue on the internet. I am writing a simple chat server and client using socket in python for learning purpose mainly. I've observed an issue here. Here is my server code : __author__ = 'pchakraverti' import socket import select import sys class NickSocketMap(object): count = 0 def __init__(self, nick, client_socket): shadowsocks errno 104 connection reset by peer self.nick = nick self.client_socket = client_socket NickSocketMap.count += 1 @staticmethod def display_count(): print "Total number of clients is %d" % NickSocketMap.count host = "" port = 7575 socket_list = [] nick_list = [] cnt = 0 recv_buffer = 1024 def register_nick(nick, client_socket): obj = NickSocketMap(nick, client_socket) nick_list.append(obj) def process_request(request_string, client_socket): parts = request_string.split("|") if parts[0] == "set_nick": register_nick(parts[1], client_socket) client_socket.send("nick_set") elif parts[0] == "transmit_msg": broadcast_message(parts[1], parts[2]) return 1 def broadcast_message(message, client_nick): for s in nick_list: if s.nick == client_nick: try: s.client_socket.send(message) except socket.errno, ex: print ex break def run_server(): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try: sock.bind((host, port)) except socket.errno, ex: print ex sys.exit(-1) sock.listen(10) # add the parent socket in the list socket_list.append(sock) # keep the server alive while True: try: read_ready, write_ready, in_error = select.select(socket_list, [], [], 0) except select.error, ex: print ex continue for s in read_ready: # check if s is the parent socket if s == sock: # accept new connection and append to list try: con, addr = s.accept() if con not in socket_list: socket_list.append(con) except socket.errno, ex: print ex else: try: # receive packet from connected client packet = s.recv(recv_buffer) if not packet: socket_list.remove(s) read_ready.remove(s) for n in nick_list: if n.client_socket == s: nick_list.remove(n
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104 Connection Reset By Peer What Does That Mean
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Errno 104 Connection Reset By Peer S3
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 http://stackoverflow.com/questions/33111556/connection-reset-by-peer-errno-104-in-python-2-7 Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Python handling socket.error: [Errno 104] Connection reset by peer up vote 31 down vote favorite 8 When using Python 2.7 with urllib2 to retrieve data http://stackoverflow.com/questions/20568216/python-handling-socket-error-errno-104-connection-reset-by-peer from an API, I get the error [Errno 104] Connection reset by peer. Whats causing the error, and how should the error be handled so that the script does not crash? ticker.py def urlopen(url): response = None request = urllib2.Request(url=url) try: response = urllib2.urlopen(request).read() except urllib2.HTTPError as err: print "HTTPError: {} ({})".format(url, err.code) except urllib2.URLError as err: print "URLError: {} ({})".format(url, err.reason) except httplib.BadStatusLine as err: print "BadStatusLine: {}".format(url) return response def get_rate(from_currency="EUR", to_currency="USD"): url = "https://finance.yahoo.com/d/quotes.csv?f=sl1&s=%s%s=X" % ( from_currency, to_currency) data = urlopen(url) if "%s%s" % (from_currency, to_currency) in data: return float(data.strip().split(",")[1]) return None counter = 0 while True: counter = counter + 1 if counter==0 or counter%10: rateEurUsd = float(get_rate('EUR', 'USD')) # does more stuff here Traceback Traceback (most recent call last): File "/var/www/testApp/python/ticker.py", line 71, in
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more http://stackoverflow.com/questions/1434451/what-does-connection-reset-by-peer-mean 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 4.7 million programmers, just like you, helping http://haridas.in/what-happens-when-we-hit-the-speed-limit-of-python.html each other. Join them; it only takes a minute: Sign up What does “connection reset by peer” mean? up vote 317 down vote favorite 69 What is the meaning of the "connection reset by peer" error on a connection reset TCP connection? Is it a fatal error or just a notification? sockets tcp share|improve this question edited Apr 19 '13 at 2:04 Nick Caplinger 278310 asked Sep 16 '09 at 17:38 Soubok 5,636113962 add a comment| 2 Answers 2 active oldest votes up vote 413 down vote accepted It's fatal. The remote server has sent you a RST packet, which indicates an immediate dropping of the connection, rather than the usual handshake. This bypasses the normal half-closed connection reset by state transition. I like this description: "Connection reset by peer" is the TCP/IP equivalent of slamming the phone back on the hook. It's more polite than merely not replying, leaving one hanging. But it's not the FIN-ACK expected of the truly polite TCP/IP converseur. share|improve this answer edited Jul 19 '14 at 18:34 EJP 196k17140247 answered Sep 16 '09 at 17:48 ire_and_curses 45.2k1987118 13 Why is it labelled "connection reset by peer”? It sounds like it should be "connection reset by the host", or "connection reset by the server" –Robert Sep 26 '14 at 13:57 12 @Robert Because that's where the reset came from. The peer sent an RST packet. –EJP Dec 17 '14 at 22:44 16 ... Robert, your concern makes no sense to me. Peer is just strictly more general than that. In a typical client-server model, the server can just as easily receive this notification from the "client". The machine that initially requests the connection has just as much power to send this notification. On a TCP level, it looks identical once the connection is ongoing. The two machines, when communicating, are just peers. –codetaku Jul 6 '15 at 19:52 Does this caused by high memory utilization on the client server (not the remote server) due to server hangs? –user1595858 Jan 25 at 18:13 @user1595858 It is mo
here I'm explaining a scenario where python was not the ideal choice. We are using python for network programming, specifically a TCP client/server program which read packets from another C based server. We picked python because on the requirements the traffic volume wasn't huge enough to consider compiled languages like C/C++ or Java, and we are already using python so more comfortable with it. The network topology Network => TCP Server A => TCP Server B ( Do some operation.) ==> Network. Where :- Server A is implemented in C. Server B is the one we implemented. The data flowing from Server A to Server B via TCP. The Server B is implemented in python for now. This setup was running for more than a year without any problems or crashing. Then it started showing problems. The Server B crashing sometime because of the socket connection between the Server A and Server B getting closed by the Server A, We don't know why. Bellow listed are the errors that we are getting, one interesting thing is; these two errors won't happen together, some time Errno 104, some time Errno 107. Errno: 104 - Peer closed the socket connection. Errno: 107 - Transport endpoint closed. I initially thought this was happening because of python's long running process exiting due to memory overflow or some other reasons. We thought this because python's reputation as a long running daemon is not great. Then we figure out that long running daemon wasn't the reason for this issue, since the main python process wasn't consuming more RAM and it's very stable in memory usage. Our python server using very simple data structures, so python VM very efficiently handling the Memory. Then I started to look into other areas of program, by changing the settings and tuning parameters to see any of it fixes the issue. All of the options seems to work for a while but it throws the same error after few days. I was stuck and no idea about the issue and spend around a week to go through the program's in and out to see any possible causes. But no clue from it. Finally Stack Overflow came into help, IRC wasn't helpful for these type of very specific issues. Programmers can't live without Google and Stack Overflow. I put the question on the SO, people