Python errno.ECONNRESET Examples

def test_garbage_in(self):
        # Connect without SSL regardless of server.scheme
        c = HTTPConnection('%s:%s' % (self.interface(), self.PORT))
        c._output(b'gjkgjklsgjklsgjkljklsg')
        c._send_output()
        response = c.response_class(c.sock, method='GET')
        try:
            response.begin()
            self.assertEqual(response.status, 400)
            self.assertEqual(response.fp.read(22),
                             b'Malformed Request-Line')
            c.close()
        except socket.error:
            e = sys.exc_info()[1]
            # "Connection reset by peer" is also acceptable.
            if e.errno != errno.ECONNRESET:
                raise 

def deliver_dnotify(self, dnstring, _recurse = 0):
        if self.s == None:
            self.connect()
        if _recurse > _MAX_RECURSE:
            raise Exception('Cannot reconnect: %s', self.spath)
        if not dnstring.endswith('\n'):
            dnstring += '\n'
        while True:
            try:
                self.s.send(dnstring)
                break
            except socket.error as why:
                if why[0] == EINTR:
                    continue
                elif why[0] in (EPIPE, ENOTCONN, ECONNRESET):
                    self.s = None
                    return self.deliver_dnotify(dnstring, _recurse + 1)
                raise why
        # Clean any incoming data on the socket
        if len(self.poller.poll(0)) > 0:
            try:
                self.s.recv(1024)
            except:
                pass
        return 

def request(self, host, handler, request_body, verbose=0):
        #retry request once if cached connection has gone cold
        for i in (0, 1):
            try:
                return self.single_request(host, handler, request_body, verbose)
            except socket.error, e:
                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
                    raise
            except httplib.BadStatusLine: #close after we sent request
                if i:
                    raise

    ##
    # Send a complete request, and parse the response.
    #
    # @param host Target host.
    # @param handler Target PRC handler.
    # @param request_body XML-RPC request body.
    # @param verbose Debugging flag.
    # @return Parsed response. 

def request(self, host, handler, request_body, verbose=0):
        #retry request once if cached connection has gone cold
        for i in (0, 1):
            try:
                return self.single_request(host, handler, request_body, verbose)
            except socket.error, e:
                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
                    raise
            except httplib.BadStatusLine: #close after we sent request
                if i:
                    raise

    ##
    # Send a complete request, and parse the response.
    #
    # @param host Target host.
    # @param handler Target PRC handler.
    # @param request_body XML-RPC request body.
    # @param verbose Debugging flag.
    # @return Parsed response. 

def read(self, n):
        buffer = []
        while self.offset < self.file_size:
            try:
                data = self.stream.read(min(n, self.file_size - self.offset))
                self.offset += len(data)
                n -= len(data)
                buffer.append(data)
                if n == 0 or data:
                        break
            except socket.timeout:
                self._progress()
                self._restart()
            except socket.error as e:
                if e.errno != errno.ECONNRESET:
                    raise
                self._progress()
                self._restart()
        return "".join(buffer) 

def request(self, host, handler, request_body, verbose=0):
        #retry request once if cached connection has gone cold
        for i in (0, 1):
            try:
                return self.single_request(host, handler, request_body, verbose)
            except socket.error, e:
                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
                    raise
            except httplib.BadStatusLine: #close after we sent request
                if i:
                    raise

    ##
    # Send a complete request, and parse the response.
    #
    # @param host Target host.
    # @param handler Target PRC handler.
    # @param request_body XML-RPC request body.
    # @param verbose Debugging flag.
    # @return Parsed response. 

def request(self, host, handler, request_body, verbose=0):
        #retry request once if cached connection has gone cold
        for i in (0, 1):
            try:
                return self.single_request(host, handler, request_body, verbose)
            except socket.error, e:
                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
                    raise
            except httplib.BadStatusLine: #close after we sent request
                if i:
                    raise

    ##
    # Send a complete request, and parse the response.
    #
    # @param host Target host.
    # @param handler Target PRC handler.
    # @param request_body XML-RPC request body.
    # @param verbose Debugging flag.
    # @return Parsed response. 

def handle(self, listener, client, addr):
        req = None
        try:
            if self.cfg.is_ssl:
                client = ssl.wrap_socket(client, server_side=True,
                    **self.cfg.ssl_options)

            parser = http.RequestParser(self.cfg, client)
            req = six.next(parser)
            self.handle_request(listener, req, client, addr)
        except http.errors.NoMoreData as e:
            self.log.debug("Ignored premature client disconnection. %s", e)
        except StopIteration as e:
            self.log.debug("Closing connection. %s", e)
        except ssl.SSLError as e:
            if e.args[0] == ssl.SSL_ERROR_EOF:
                self.log.debug("ssl connection closed")
                client.close()
            else:
                self.log.debug("Error processing SSL request.")
                self.handle_error(req, client, addr, e)
        except EnvironmentError as e:
            if e.errno not in (errno.EPIPE, errno.ECONNRESET):
                self.log.exception("Socket error processing request.")
            else:
                if e.errno == errno.ECONNRESET:
                    self.log.debug("Ignoring connection reset")
                else:
                    self.log.debug("Ignoring EPIPE")
        except Exception as e:
            self.handle_error(req, client, addr, e)
        finally:
            util.close(client) 

def send_raw(self, command, _recurse = 0, stime = None):
        if _recurse > _MAX_RECURSE:
            raise Exception('Cannot reconnect: %s' % (str(self.userv.address),))
        if self.s == None:
            self.connect()
        #print('%s.send_raw(%s)' % (id(self), command))
        if stime == None:
            stime = MonoTime()
        while True:
            try:
                self.s.send(command.encode())
                break
            except socket.error as why:
                if why.errno == EINTR:
                    continue
                elif why.errno in (EPIPE, ENOTCONN, ECONNRESET):
                    self.s = None
                    return self.send_raw(command, _recurse + 1, stime)
                raise why
        while True:
            try:
                rval = self.s.recv(1024)
                if len(rval) == 0:
                    self.s = None
                    return self.send_raw(command, _MAX_RECURSE, stime)
                rval = rval.decode().strip()
                break
            except socket.error as why:
                if why.errno == EINTR:
                    continue
                elif why.errno in (EPIPE, ENOTCONN, ECONNRESET):
                    self.s = None
                    return self.send_raw(command, _recurse + 1, stime)
                raise why
        rtpc_delay = stime.offsetFromNow()
        return (rval, rtpc_delay) 

def _recvall_blocking(conn, amount):
    data = []
    while amount > 0:
        with wrapped_socket_errnos(errno.ECONNRESET):
            piece = conn.recv(amount)

        if not piece:
            raise _ConnectionLost("could not recv() all bytes")
        data.append(piece)
        amount -= len(piece)
    return "".join(data) 

def _is_connreset(self, exc):
        """Return true if exc is ECONNRESET or equivalent.

        May be overridden in subclasses.
        """
        return (isinstance(exc, (socket.error, IOError)) and
                errno_from_exception(exc) in _ERRNO_CONNRESET) 

def _read_to_buffer(self):
        """Reads from the socket and appends the result to the read buffer.

        Returns the number of bytes read.  Returns 0 if there is nothing
        to read (i.e. the read returns EWOULDBLOCK or equivalent).  On
        error closes the socket and raises an exception.
        """
        while True:
            try:
                chunk = self.read_from_fd()
            except (socket.error, IOError, OSError) as e:
                if errno_from_exception(e) == errno.EINTR:
                    continue
                # ssl.SSLError is a subclass of socket.error
                if self._is_connreset(e):
                    # Treat ECONNRESET as a connection close rather than
                    # an error to minimize log spam  (the exception will
                    # be available on self.error for apps that care).
                    self.close(exc_info=True)
                    return
                self.close(exc_info=True)
                raise
            break
        if chunk is None:
            return 0
        self._read_buffer.append(chunk)
        self._read_buffer_size += len(chunk)
        if self._read_buffer_size > self.max_buffer_size:
            gen_log.error("Reached maximum read buffer size")
            self.close()
            raise StreamBufferFullError("Reached maximum read buffer size")
        return len(chunk) 

def _is_connreset(self, exc):
        """Return true if exc is ECONNRESET or equivalent.

        May be overridden in subclasses.
        """
        return (isinstance(exc, (socket.error, IOError)) and
                errno_from_exception(exc) in _ERRNO_CONNRESET) 

def request(self, host, handler, request_body, verbose=False):
        #retry request once if cached connection has gone cold
        for i in (0, 1):
            try:
                return self.single_request(host, handler, request_body, verbose)
            except socket.error as e:
                if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
                    raise
            except http_client.BadStatusLine: #close after we sent request
                if i:
                    raise 

def _read_to_buffer(self):
        """Reads from the socket and appends the result to the read buffer.

        Returns the number of bytes read.  Returns 0 if there is nothing
        to read (i.e. the read returns EWOULDBLOCK or equivalent).  On
        error closes the socket and raises an exception.
        """
        while True:
            try:
                chunk = self.read_from_fd()
            except (socket.error, IOError, OSError) as e:
                if errno_from_exception(e) == errno.EINTR:
                    continue
                # ssl.SSLError is a subclass of socket.error
                if self._is_connreset(e):
                    # Treat ECONNRESET as a connection close rather than
                    # an error to minimize log spam  (the exception will
                    # be available on self.error for apps that care).
                    self.close(exc_info=True)
                    return
                self.close(exc_info=True)
                raise
            break
        if chunk is None:
            return 0
        self._read_buffer.append(chunk)
        self._read_buffer_size += len(chunk)
        if self._read_buffer_size > self.max_buffer_size:
            gen_log.error("Reached maximum read buffer size")
            self.close()
            raise StreamBufferFullError("Reached maximum read buffer size")
        return len(chunk) 

def _recvall_stream(sock, amount, timeout=None):
    data = []
    while amount > 0:
        with wrapped_socket_errnos(errno.ECONNRESET):
            piece = yield sock.recv(amount, timeout=timeout)

        if not piece:
            raise _ConnectionLost("could not recv() all bytes")
        data.append(piece)
        amount -= len(piece)
    idiokit.stop("".join(data)) 

def send_encoded(conn, obj):
    msg_bytes = cPickle.dumps(obj, cPickle.HIGHEST_PROTOCOL)
    data = struct.pack("!I", len(msg_bytes)) + msg_bytes

    with wrapped_socket_errnos(errno.ECONNRESET, errno.EPIPE):
        conn.sendall(data) 

def run(self):
            while not self.stopped.wait(0):
                try:
                    cmd_args = self.api.recv()
                except (SocketError,
                        websocket._exceptions.WebSocketConnectionClosedException) as err:
                    cmd_args = None
                    if (hasattr(err, "errno") and err.errno in (errno.ECONNRESET, errno.ETIMEDOUT)
                            or "Connection is already closed." in str(err)):
                        while True:
                            # --stream-timeout will handle the timeout
                            try:
                                # reconnect on network issues
                                self.api.reconnect()
                                break
                            except websocket._exceptions.WebSocketAddressException:
                                # no connection available
                                reconnect_time_ws = 5
                                log.error("Local network issue, websocket reconnecting in {0}s".format(reconnect_time_ws))
                                sleep(reconnect_time_ws)
                    else:
                        raise
                except PluginError:
                    continue

                if not cmd_args:
                    continue
                if cmd_args["cmd"] == "warning":
                    log.warning("{code}: {message}", **cmd_args["args"])
                if cmd_args["cmd"] == "moduleInfo":
                    data = self.handle_module_info(cmd_args["args"])
                    if data:
                        self.data_chunks.append(data)
            log.debug("Stopped API polling") 

def try_protocol_combo(server_protocol,
                           client_protocol,
                           expect_success,
                           certsreqs=None):
        if certsreqs is None:
            certsreqs = ssl.CERT_NONE
        certtype = {
            ssl.CERT_NONE: "CERT_NONE",
            ssl.CERT_OPTIONAL: "CERT_OPTIONAL",
            ssl.CERT_REQUIRED: "CERT_REQUIRED",
        }[certsreqs]
        if test_support.verbose:
            formatstr = (expect_success and " %s->%s %s\n") or " {%s->%s} %s\n"
            sys.stdout.write(formatstr %
                             (ssl.get_protocol_name(client_protocol),
                              ssl.get_protocol_name(server_protocol),
                              certtype))
        try:
            # NOTE: we must enable "ALL" ciphers, otherwise an SSLv23 client
            # will send an SSLv3 hello (rather than SSLv2) starting from
            # OpenSSL 1.0.0 (see issue #8322).
            server_params_test(CERTFILE, server_protocol, certsreqs,
                               CERTFILE, CERTFILE, client_protocol,
                               ciphers="ALL", chatty=False)
        # Protocol mismatch can result in either an SSLError, or a
        # "Connection reset by peer" error.
        except ssl.SSLError:
            if expect_success:
                raise
        except socket.error as e:
            if expect_success or e.errno != errno.ECONNRESET:
                raise
        else:
            if not expect_success:
                raise AssertionError(
                    "Client protocol %s succeeded with server protocol %s!"
                    % (ssl.get_protocol_name(client_protocol),
                       ssl.get_protocol_name(server_protocol))) 

def handle(self, conn):
        keepalive = False
        req = None
        try:
            req = six.next(conn.parser)
            if not req:
                return (False, conn)

            # handle the request
            keepalive = self.handle_request(req, conn)
            if keepalive:
                return (keepalive, conn)
        except http.errors.NoMoreData as e:
            self.log.debug("Ignored premature client disconnection. %s", e)

        except StopIteration as e:
            self.log.debug("Closing connection. %s", e)
        except ssl.SSLError as e:
            if e.args[0] == ssl.SSL_ERROR_EOF:
                self.log.debug("ssl connection closed")
                conn.sock.close()
            else:
                self.log.debug("Error processing SSL request.")
                self.handle_error(req, conn.sock, conn.client, e)

        except EnvironmentError as e:
            if e.errno not in (errno.EPIPE, errno.ECONNRESET):
                self.log.exception("Socket error processing request.")
            else:
                if e.errno == errno.ECONNRESET:
                    self.log.debug("Ignoring connection reset")
                else:
                    self.log.debug("Ignoring connection epipe")
        except Exception as e:
            self.handle_error(req, conn.sock, conn.client, e)

        return (False, conn) 

def test_wrong_cert(self):
            """Connecting when the server rejects the client's certificate

            Launch a server with CERT_REQUIRED, and check that trying to
            connect to it with a wrong client certificate fails.
            """
            certfile = os.path.join(os.path.dirname(__file__) or os.curdir,
                                       "keycert.pem")
            server = ThreadedEchoServer(SIGNED_CERTFILE,
                                        certreqs=ssl.CERT_REQUIRED,
                                        cacerts=SIGNING_CA, chatty=False,
                                        connectionchatty=False)
            with server, \
                    closing(socket.socket()) as sock, \
                    closing(ssl.wrap_socket(sock,
                                        certfile=certfile,
                                        ssl_version=ssl.PROTOCOL_TLSv1)) as s:
                try:
                    # Expect either an SSL error about the server rejecting
                    # the connection, or a low-level connection reset (which
                    # sometimes happens on Windows)
                    s.connect((HOST, server.port))
                except ssl.SSLError as e:
                    if support.verbose:
                        sys.stdout.write("\nSSLError is %r\n" % e)
                except socket.error as e:
                    if e.errno != errno.ECONNRESET:
                        raise
                    if support.verbose:
                        sys.stdout.write("\nsocket.error is %r\n" % e)
                else:
                    self.fail("Use of invalid cert should have failed!") 

def read(self, sz):
    try:
      buff = self.handle.recv(sz)
    except socket.error, e:
      if (e.args[0] == errno.ECONNRESET and
          (sys.platform == 'darwin' or sys.platform.startswith('freebsd'))):
        # freebsd and Mach don't follow POSIX semantic of recv
        # and fail with ECONNRESET if peer performed shutdown.
        # See corresponding comment and code in TSocket::read()
        # in lib/cpp/src/transport/TSocket.cpp.
        self.close()
        # Trigger the check to raise the END_OF_FILE exception below.
        buff = ''
      else:
        raise 

def _restart(self):
        req = urllib2.Request(self.uri)
        if self.offset:
            req.headers['Range'] = 'bytes=%s-' % (self.offset, )
        while True:
            try:
                self.stream = urllib2.urlopen(req, timeout = 30)
                break
            except socket.timeout:
                continue
            except socket.error, e:
                if e.errno != errno.ECONNRESET:
                    raise 

def _is_connreset(self, exc: BaseException) -> bool:
        """Return ``True`` if exc is ECONNRESET or equivalent.

        May be overridden in subclasses.
        """
        return (
            isinstance(exc, (socket.error, IOError))
            and errno_from_exception(exc) in _ERRNO_CONNRESET
        ) 

def wrap_conn(self):
                try:
                    self.sslconn = self.server.context.wrap_socket(
                        self.sock, server_side=True)
                    self.server.selected_protocols.append(self.sslconn.selected_npn_protocol())
                except socket.error as e:
                    # We treat ConnectionResetError as though it were an
                    # SSLError - OpenSSL on Ubuntu abruptly closes the
                    # connection when asked to use an unsupported protocol.
                    #
                    # XXX Various errors can have happened here, for example
                    # a mismatching protocol version, an invalid certificate,
                    # or a low-level bug. This should be made more discriminating.
                    if not isinstance(e, ssl.SSLError) and e.errno != errno.ECONNRESET:
                        raise
                    self.server.conn_errors.append(e)
                    if self.server.chatty:
                        handle_error("\n server:  bad connection attempt from " + repr(self.addr) + ":\n")
                    self.running = False
                    self.server.stop()
                    self.close()
                    return False
                else:
                    if self.server.context.verify_mode == ssl.CERT_REQUIRED:
                        cert = self.sslconn.getpeercert()
                        if support.verbose and self.server.chatty:
                            sys.stdout.write(" client cert is " + pprint.pformat(cert) + "\n")
                        cert_binary = self.sslconn.getpeercert(True)
                        if support.verbose and self.server.chatty:
                            sys.stdout.write(" cert binary is " + str(len(cert_binary)) + " bytes\n")
                    cipher = self.sslconn.cipher()
                    if support.verbose and self.server.chatty:
                        sys.stdout.write(" server: connection cipher is now " + str(cipher) + "\n")
                        sys.stdout.write(" server: selected protocol is now "
                                + str(self.sslconn.selected_npn_protocol()) + "\n")
                    return True 

def finish_request(self, request, client_address):
        try:
            self.RequestHandlerClass(request, client_address, self)
        except NetWorkIOError as e:
            if e[0] not in (errno.ECONNABORTED, errno.ECONNRESET, errno.EPIPE):
                raise 

def get_a10_client(self, device_info, **kwargs):
        if kwargs.get('action', None) == 'create':
            retry = [errno.EHOSTUNREACH, errno.ECONNRESET, errno.ECONNREFUSED, errno.ETIMEDOUT]
            return acos_client.Client(
                device_info['host'], device_info['api_version'],
                device_info['username'], device_info['password'],
                port=device_info['port'], protocol=device_info['protocol'],
                retry_errno_list=retry)
        else:
            return super(VThunderPerTenantPlumbingHooks, self).get_a10_client(device_info, **kwargs) 

def _read_to_buffer(self):
        """Reads from the socket and appends the result to the read buffer.

        Returns the number of bytes read.  Returns 0 if there is nothing
        to read (i.e. the read returns EWOULDBLOCK or equivalent).  On
        error closes the socket and raises an exception.
        """
        try:
            chunk = self.read_from_fd()
        except (socket.error, IOError, OSError) as e:
            # ssl.SSLError is a subclass of socket.error
            if e.args[0] in _ERRNO_CONNRESET:
                # Treat ECONNRESET as a connection close rather than
                # an error to minimize log spam  (the exception will
                # be available on self.error for apps that care).
                self.close(exc_info=True)
                return
            self.close(exc_info=True)
            raise
        if chunk is None:
            return 0
        self._read_buffer.append(chunk)
        self._read_buffer_size += len(chunk)
        if self._read_buffer_size >= self.max_buffer_size:
            gen_log.error("Reached maximum read buffer size")
            self.close()
            raise IOError("Reached maximum read buffer size")
        return len(chunk) 

def _read_to_buffer(self):
        """Reads from the socket and appends the result to the read buffer.

        Returns the number of bytes read.  Returns 0 if there is nothing
        to read (i.e. the read returns EWOULDBLOCK or equivalent).  On
        error closes the socket and raises an exception.
        """
        try:
            chunk = self.read_from_fd()
        except (socket.error, IOError, OSError) as e:
            # ssl.SSLError is a subclass of socket.error
            if e.args[0] in _ERRNO_CONNRESET:
                # Treat ECONNRESET as a connection close rather than
                # an error to minimize log spam  (the exception will
                # be available on self.error for apps that care).
                self.close(exc_info=True)
                return
            self.close(exc_info=True)
            raise
        if chunk is None:
            return 0
        self._read_buffer.append(chunk)
        self._read_buffer_size += len(chunk)
        if self._read_buffer_size >= self.max_buffer_size:
            gen_log.error("Reached maximum read buffer size")
            self.close()
            raise IOError("Reached maximum read buffer size")
        return len(chunk) 

def set_trace(self, frame=None):
        if frame is None:
            frame = sys._getframe().f_back
        try:
            Pdb.set_trace(self, frame)
        except IOError as exc:
            if exc.errno != errno.ECONNRESET:
                raise