Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/requests_toolbelt/utils/dump.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 """This module provides functions for dumping information about responses."""
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2 import collections
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3
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4 from requests import compat
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5
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6
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7 __all__ = ('dump_response', 'dump_all')
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8
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9 HTTP_VERSIONS = {
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10 9: b'0.9',
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11 10: b'1.0',
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12 11: b'1.1',
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13 }
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14
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15 _PrefixSettings = collections.namedtuple('PrefixSettings',
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16 ['request', 'response'])
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17
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18
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19 class PrefixSettings(_PrefixSettings):
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20 def __new__(cls, request, response):
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21 request = _coerce_to_bytes(request)
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22 response = _coerce_to_bytes(response)
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23 return super(PrefixSettings, cls).__new__(cls, request, response)
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24
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25
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26 def _get_proxy_information(response):
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27 if getattr(response.connection, 'proxy_manager', False):
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28 proxy_info = {}
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29 request_url = response.request.url
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30 if request_url.startswith('https://'):
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31 proxy_info['method'] = 'CONNECT'
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32
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33 proxy_info['request_path'] = request_url
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34 return proxy_info
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35 return None
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36
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37
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38 def _format_header(name, value):
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39 return (_coerce_to_bytes(name) + b': ' + _coerce_to_bytes(value) +
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40 b'\r\n')
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41
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42
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43 def _build_request_path(url, proxy_info):
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44 uri = compat.urlparse(url)
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45 proxy_url = proxy_info.get('request_path')
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46 if proxy_url is not None:
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47 request_path = _coerce_to_bytes(proxy_url)
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48 return request_path, uri
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49
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50 request_path = _coerce_to_bytes(uri.path)
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51 if uri.query:
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52 request_path += b'?' + _coerce_to_bytes(uri.query)
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53
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54 return request_path, uri
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55
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56
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57 def _dump_request_data(request, prefixes, bytearr, proxy_info=None):
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58 if proxy_info is None:
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59 proxy_info = {}
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60
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61 prefix = prefixes.request
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62 method = _coerce_to_bytes(proxy_info.pop('method', request.method))
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63 request_path, uri = _build_request_path(request.url, proxy_info)
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64
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65 # <prefix><METHOD> <request-path> HTTP/1.1
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66 bytearr.extend(prefix + method + b' ' + request_path + b' HTTP/1.1\r\n')
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67
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68 # <prefix>Host: <request-host> OR host header specified by user
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69 headers = request.headers.copy()
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70 host_header = _coerce_to_bytes(headers.pop('Host', uri.netloc))
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71 bytearr.extend(prefix + b'Host: ' + host_header + b'\r\n')
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72
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73 for name, value in headers.items():
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74 bytearr.extend(prefix + _format_header(name, value))
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75
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76 bytearr.extend(prefix + b'\r\n')
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77 if request.body:
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78 if isinstance(request.body, compat.basestring):
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79 bytearr.extend(prefix + _coerce_to_bytes(request.body))
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80 else:
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81 # In the event that the body is a file-like object, let's not try
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82 # to read everything into memory.
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83 bytearr.extend(b'<< Request body is not a string-like type >>')
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84 bytearr.extend(b'\r\n')
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85
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86
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87 def _dump_response_data(response, prefixes, bytearr):
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88 prefix = prefixes.response
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89 # Let's interact almost entirely with urllib3's response
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90 raw = response.raw
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91
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92 # Let's convert the version int from httplib to bytes
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93 version_str = HTTP_VERSIONS.get(raw.version, b'?')
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94
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95 # <prefix>HTTP/<version_str> <status_code> <reason>
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96 bytearr.extend(prefix + b'HTTP/' + version_str + b' ' +
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97 str(raw.status).encode('ascii') + b' ' +
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98 _coerce_to_bytes(response.reason) + b'\r\n')
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99
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100 headers = raw.headers
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101 for name in headers.keys():
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102 for value in headers.getlist(name):
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103 bytearr.extend(prefix + _format_header(name, value))
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104
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105 bytearr.extend(prefix + b'\r\n')
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106
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107 bytearr.extend(response.content)
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108
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109
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110 def _coerce_to_bytes(data):
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111 if not isinstance(data, bytes) and hasattr(data, 'encode'):
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112 data = data.encode('utf-8')
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113 # Don't bail out with an exception if data is None
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114 return data if data is not None else b''
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115
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116
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117 def dump_response(response, request_prefix=b'< ', response_prefix=b'> ',
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118 data_array=None):
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119 """Dump a single request-response cycle's information.
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120
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121 This will take a response object and dump only the data that requests can
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122 see for that single request-response cycle.
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123
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124 Example::
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125
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126 import requests
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127 from requests_toolbelt.utils import dump
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128
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129 resp = requests.get('https://api.github.com/users/sigmavirus24')
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130 data = dump.dump_response(resp)
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131 print(data.decode('utf-8'))
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132
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133 :param response:
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134 The response to format
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135 :type response: :class:`requests.Response`
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136 :param request_prefix: (*optional*)
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137 Bytes to prefix each line of the request data
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138 :type request_prefix: :class:`bytes`
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139 :param response_prefix: (*optional*)
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140 Bytes to prefix each line of the response data
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141 :type response_prefix: :class:`bytes`
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142 :param data_array: (*optional*)
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143 Bytearray to which we append the request-response cycle data
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144 :type data_array: :class:`bytearray`
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145 :returns: Formatted bytes of request and response information.
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146 :rtype: :class:`bytearray`
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147 """
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148 data = data_array if data_array is not None else bytearray()
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149 prefixes = PrefixSettings(request_prefix, response_prefix)
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150
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151 if not hasattr(response, 'request'):
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152 raise ValueError('Response has no associated request')
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153
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154 proxy_info = _get_proxy_information(response)
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155 _dump_request_data(response.request, prefixes, data,
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156 proxy_info=proxy_info)
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157 _dump_response_data(response, prefixes, data)
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158 return data
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159
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160
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161 def dump_all(response, request_prefix=b'< ', response_prefix=b'> '):
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162 """Dump all requests and responses including redirects.
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163
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164 This takes the response returned by requests and will dump all
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165 request-response pairs in the redirect history in order followed by the
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166 final request-response.
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167
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168 Example::
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169
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170 import requests
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171 from requests_toolbelt.utils import dump
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172
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173 resp = requests.get('https://httpbin.org/redirect/5')
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174 data = dump.dump_all(resp)
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175 print(data.decode('utf-8'))
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176
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177 :param response:
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178 The response to format
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179 :type response: :class:`requests.Response`
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180 :param request_prefix: (*optional*)
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181 Bytes to prefix each line of the request data
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182 :type request_prefix: :class:`bytes`
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183 :param response_prefix: (*optional*)
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184 Bytes to prefix each line of the response data
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185 :type response_prefix: :class:`bytes`
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186 :returns: Formatted bytes of request and response information.
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187 :rtype: :class:`bytearray`
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188 """
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189 data = bytearray()
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190
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191 history = list(response.history[:])
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192 history.append(response)
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193
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194 for response in history:
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195 dump_response(response, request_prefix, response_prefix, data)
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196
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197 return data