<commit_before># The MIT License (MIT)
#
# Copyright (c) 2014 <NAME>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.


import hashlib
import os
import struct

import format

from .. import util

__all__ = ['MessageFormatException', 'Message', 'UnknownMessageException',

           'Address', 'Alert', 'Block', 'GetAddress', 'GetBlocks', 'GetData',
           'GetHeaders', 'Headers', 'Inventory', 'MemoryPool', 'NotFound',
           'Ping', 'Pong', 'Reject', 'Transaction', 'Version', 'VersionAck']


def _debug(obj, params):
    message = ['<%s' % obj.__class__.__name__]
    for (k, v) in params:
        if isinstance(v, (list, tuple)):
            message.append(('len(%s)=%d' % (k, len(v))))
            if len(v):
                k = '%s[0]' % k
                v = v[0]

        if v:
            if isinstance(v, format.NetworkAddress):
                text = '%s:%d' % (v.address, v.port)
            elif isinstance(v, format.InventoryVector):
                obj_type = 'unknown'
                if v.object_type < 2:
                    obj_type = ['error', 'tx', 'block'][v.object_type]
                text = '%s:%s' % (obj_type, v.hash.encode('hex'))
            elif isinstance(v, format.Txn):
                text = v.hash.encode('hex')
            else:
                text = str(v)
            message.append(('%s=%s' % (k, text)))

    return " ".join(message) + '>'


# Raised if the message command is not registered
class UnknownMessageException(Exception): pass


# Raised if there was a problem with the header
class MessageFormatException(Exception): pass


class Message(format.CompoundType):
    '''A message object. This base class is responsible for serializing and
       deserializing binary network payloads.

       Each message sub-class should specify an array of (name, FormatType)
       tuples named properties. See below for examples.

       Message subclasses will automatically be registered, unless they set<commit_msg>object_type = 2 not shown in debug output for transactions.<commit_after># The MIT License (MIT)
#
# Copyright (c) 2014 <NAME>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.


import hashlib
import os
import struct

import format

from .. import util

__all__ = ['MessageFormatException', 'Message', 'UnknownMessageException',

           'Address', 'Alert', 'Block', 'GetAddress', 'GetBlocks', 'GetData',
           'GetHeaders', 'Headers', 'Inventory', 'MemoryPool', 'NotFound',
           'Ping', 'Pong', 'Reject', 'Transaction', 'Version', 'VersionAck']


def _debug(obj, params):
    message = ['<%s' % obj.__class__.__name__]
    for (k, v) in params:
        if isinstance(v, (list, tuple)):
            message.append(('len(%s)=%d' % (k, len(v))))
            if len(v):
                k = '%s[0]' % k
                v = v[0]

        if v:
            if isinstance(v, format.NetworkAddress):
                text = '%s:%d' % (v.address, v.port)
            elif isinstance(v, format.InventoryVector):
                obj_type = 'unknown'
                if v.object_type <= 2:
                    obj_type = ['error', 'tx', 'block'][v.object_type]
                text = '%s:%s' % (obj_type, v.hash.encode('hex'))
            elif isinstance(v, format.Txn):
                text = v.hash.encode('hex')
            else:
                text = str(v)
            message.append(('%s=%s' % (k, text)))

    return " ".join(message) + '>'


# Raised if the message command is not registered
class UnknownMessageException(Exception): pass


# Raised if there was a problem with the header
class MessageFormatException(Exception): pass


class Message(format.CompoundType):
    '''A message object. This base class is responsible for serializing and
       deserializing binary network payloads.

       Each message sub-class should specify an array of (name, FormatType)
       tuples named properties. See below for examples.

       Message subclasses will automatically be registered, unless they set
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