Python SSL.WantWriteError方法代码示例

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _handle_ssl_want_rw(self):
            prev_row_pending = self._ssl_want_read or self._ssl_want_write
            try:
                yield
            except SSL.WantReadError:
                # we should never get here; it's just for extra safety
                self._ssl_want_read = True
            except SSL.WantWriteError:
                # we should never get here; it's just for extra safety
                self._ssl_want_write = True

            if self._ssl_want_read:
                self.modify_ioloop_events(
                    self._wanted_io_events | self.ioloop.READ, logdebug=True)
            elif self._ssl_want_write:
                self.modify_ioloop_events(
                    self._wanted_io_events | self.ioloop.WRITE, logdebug=True)
            else:
                if prev_row_pending:
                    self.modify_ioloop_events(self._wanted_io_events) 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def recv(self, buffer_size):
            try:
                return super(SSLConnection, self).recv(buffer_size)
            except SSL.WantReadError:
                debug("call: recv(), err: want-read", inst=self)
                self._ssl_want_read = True
                raise RetryError
            except SSL.WantWriteError:
                debug("call: recv(), err: want-write", inst=self)
                self._ssl_want_write = True
                raise RetryError
            except SSL.ZeroReturnError as err:
                debug("call: recv() -> shutdown(), err: zero-return",
                      inst=self)
                super(SSLConnection, self).handle_close()
                return b''
            except SSL.SysCallError as err:
                debug("call: recv(), err: %r" % err, inst=self)
                errnum, errstr = err.args
                if (errnum in _ERRNOS_DISCONNECTED or
                        errstr == 'Unexpected EOF'):
                    super(SSLConnection, self).handle_close()
                    return b''
                else:
                    raise 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def writeSomeData(self, data):
        try:
            return Connection.writeSomeData(self, data)
        except SSL.WantWriteError:
            return 0
        except SSL.WantReadError:
            self.writeBlockedOnRead = 1
            Connection.stopWriting(self)
            Connection.startReading(self)
            return 0
        except SSL.ZeroReturnError:
            return main.CONNECTION_LOST
        except SSL.SysCallError, e:
            if e[0] == -1 and data == "":
                # errors when writing empty strings are expected
                # and can be ignored
                return 0
            else:
                return main.CONNECTION_LOST 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def doRead(self):
        if self.writeBlockedOnRead:
            self.writeBlockedOnRead = 0
            self._resetReadWrite()
        try:
            return Connection.doRead(self)
        except SSL.ZeroReturnError:
            return main.CONNECTION_DONE
        except SSL.WantReadError:
            return
        except SSL.WantWriteError:
            self.readBlockedOnWrite = 1
            Connection.startWriting(self)
            Connection.stopReading(self)
            return
        except SSL.SysCallError, (retval, desc):
            if ((retval == -1 and desc == 'Unexpected EOF')
                or retval > 0):
                return main.CONNECTION_LOST
            log.err()
            return main.CONNECTION_LOST 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with SSL error-trapping.
        
        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError, e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""
                
                errnum = e.args[0]
                if is_reader and errnum in wsgiserver.socket_errors_to_ignore:
                    return ""
                raise socket.error(errnum)
            except SSL.Error, e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""
                
                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass
                
                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise wsgiserver.NoSSLError()
                
                raise wsgiserver.FatalSSLAlert(*e.args) 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _do_ssl_handshake(self):
            self._ssl_accepting = True
            self._ssl_want_read = False
            self._ssl_want_write = False
            try:
                self.socket.do_handshake()
            except SSL.WantReadError:
                self._ssl_want_read = True
                debug("call: _do_ssl_handshake, err: want-read", inst=self)
            except SSL.WantWriteError:
                self._ssl_want_write = True
                debug("call: _do_ssl_handshake, err: want-write", inst=self)
            except SSL.SysCallError as err:
                debug("call: _do_ssl_handshake, err: %r" % err, inst=self)
                retval, desc = err.args
                if (retval == -1 and desc == 'Unexpected EOF') or retval > 0:
                    return self.handle_close()
                raise
            except SSL.Error as err:
                debug("call: _do_ssl_handshake, err: %r" % err, inst=self)
                return self.handle_failed_ssl_handshake()
            else:
                debug("SSL connection established", self)
                self._ssl_accepting = False
                self._ssl_established = True
                self.handle_ssl_established() 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def send(self, data):
            if not isinstance(data, bytes):
                data = bytes(data)
            try:
                return super(SSLConnection, self).send(data)
            except SSL.WantReadError:
                debug("call: send(), err: want-read", inst=self)
                self._ssl_want_read = True
                return 0
            except SSL.WantWriteError:
                debug("call: send(), err: want-write", inst=self)
                self._ssl_want_write = True
                return 0
            except SSL.ZeroReturnError as err:
                debug(
                    "call: send() -> shutdown(), err: zero-return", inst=self)
                super(SSLConnection, self).handle_close()
                return 0
            except SSL.SysCallError as err:
                debug("call: send(), err: %r" % err, inst=self)
                errnum, errstr = err.args
                if errnum == errno.EWOULDBLOCK:
                    return 0
                elif (errnum in _ERRNOS_DISCONNECTED or
                        errstr == 'Unexpected EOF'):
                    super(SSLConnection, self).handle_close()
                    return 0
                else:
                    raise 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with SSL error-trapping.

        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError, e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""

                errnum = e.args[0]
                if is_reader and errnum in wsgiserver.socket_errors_to_ignore:
                    return ""
                raise socket.error(errnum)
            except SSL.Error, e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""

                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass

                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise wsgiserver.NoSSLError()

                raise wsgiserver.FatalSSLAlert(*e.args) 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def doRead(self):
        if self.disconnected:
            # See the comment in the similar check in doWrite below.
            # Additionally, in order for anything other than returning
            # CONNECTION_DONE here to make sense, it will probably be necessary
            # to implement a way to switch back to TCP from TLS (actually, if
            # we did something other than return CONNECTION_DONE, that would be
            # a big part of implementing that feature).  In other words, the
            # expectation is that doRead will be called when self.disconnected
            # is True only when the connection has been lost.  It's possible
            # that the other end could stop speaking TLS and then send us some
            # non-TLS data.  We'll end up ignoring that data and dropping the
            # connection.  There's no unit tests for this check in the cases
            # where it makes a difference.  The test suite only hits this
            # codepath when it would have otherwise hit the SSL.ZeroReturnError
            # exception handler below, which has exactly the same behavior as
            # this conditional.  Maybe that's the only case that can ever be
            # triggered, I'm not sure.  -exarkun
            return main.CONNECTION_DONE
        if self.writeBlockedOnRead:
            self.writeBlockedOnRead = 0
            self._resetReadWrite()
        try:
            return Connection.doRead(self)
        except SSL.ZeroReturnError:
            return main.CONNECTION_DONE
        except SSL.WantReadError:
            return
        except SSL.WantWriteError:
            self.readBlockedOnWrite = 1
            Connection.startWriting(self)
            Connection.stopReading(self)
            return
        except SSL.SysCallError, (retval, desc):
            if ((retval == -1 and desc == 'Unexpected EOF')
                or retval > 0):
                return main.CONNECTION_LOST
            log.err()
            return main.CONNECTION_LOST 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with SSL error-trapping.

        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""

                errnum = e.args[0]
                if is_reader and errnum in wsgiserver.socket_errors_to_ignore:
                    return ""
                raise socket.error(errnum)
            except SSL.Error as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ""

                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass

                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise wsgiserver.NoSSLError()

                raise wsgiserver.FatalSSLAlert(*e.args)
            except:
                raise

            if time.time() - start > self.ssl_timeout:
                raise socket.timeout("timed out") 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with TLS error-trapping.

        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                # Ref: https://stackoverflow.com/a/5133568/595220
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return b''

                errnum = e.args[0]
                if is_reader and errnum in errors.socket_errors_to_ignore:
                    return b''
                raise socket.error(errnum)
            except SSL.Error as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return b''

                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass

                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise errors.NoSSLError()

                raise errors.FatalSSLAlert(*e.args)

            if time.time() - start > self.ssl_timeout:
                raise socket.timeout('timed out') 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with SSL error-trapping.

        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ''

                errnum = e.args[0]
                if is_reader and errnum in wsgiserver.socket_errors_to_ignore:
                    return ''
                raise socket.error(errnum)
            except SSL.Error as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return ''

                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass

                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise wsgiserver.NoSSLError()

                raise wsgiserver.FatalSSLAlert(*e.args)
            except:
                raise

            if time.time() - start > self.ssl_timeout:
                raise socket.timeout('timed out') 

# 需要导入模块: from OpenSSL import SSL [as 别名]
# 或者: from OpenSSL.SSL import WantWriteError [as 别名]
def _safe_call(self, is_reader, call, *args, **kwargs):
        """Wrap the given call with SSL error-trapping.

        is_reader: if False EOF errors will be raised. If True, EOF errors
        will return "" (to emulate normal sockets).
        """
        start = time.time()
        while True:
            try:
                return call(*args, **kwargs)
            except SSL.WantReadError:
                # Sleep and try again. This is dangerous, because it means
                # the rest of the stack has no way of differentiating
                # between a "new handshake" error and "client dropped".
                # Note this isn't an endless loop: there's a timeout below.
                # Ref: https://stackoverflow.com/a/5133568/595220
                time.sleep(self.ssl_retry)
            except SSL.WantWriteError:
                time.sleep(self.ssl_retry)
            except SSL.SysCallError as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return b''

                errnum = e.args[0]
                if is_reader and errnum in errors.socket_errors_to_ignore:
                    return b''
                raise socket.error(errnum)
            except SSL.Error as e:
                if is_reader and e.args == (-1, 'Unexpected EOF'):
                    return b''

                thirdarg = None
                try:
                    thirdarg = e.args[0][0][2]
                except IndexError:
                    pass

                if thirdarg == 'http request':
                    # The client is talking HTTP to an HTTPS server.
                    raise errors.NoSSLError()

                raise errors.FatalSSLAlert(*e.args)

            if time.time() - start > self.ssl_timeout:
                raise socket.timeout('timed out')