Mercurial > cpython-lru_cache-weakref

annotate Lib/SimpleHTTPServer.py @ 38664:7619216bbc19 2.4

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Bug #1502728: Correctly link against librt library on HP-UX. (backport from rev. 46743)
author Georg Brandl <georg@python.org>
date Thu, 08 Jun 2006 12:54:16 +0000
parents da0995ca1f30
children 03c05cab5f21
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1 """Simple HTTP Server.
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2
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3 This module builds on BaseHTTPServer by implementing the standard GET
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4 and HEAD requests in a fairly straightforward manner.
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5
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6 """
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7
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8
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9 __version__ = "0.6"
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10
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11 __all__ = ["SimpleHTTPRequestHandler"]
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12
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13 import os
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14 import posixpath
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15 import BaseHTTPServer
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16 import urllib
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17 import urlparse
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18 import cgi
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19 import shutil
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20 import mimetypes
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21 from StringIO import StringIO
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22
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23
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24 class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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25
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26 """Simple HTTP request handler with GET and HEAD commands.
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27
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28 This serves files from the current directory and any of its
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29 subdirectories. The MIME type for files is determined by
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30 calling the .guess_type() method.
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31
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32 The GET and HEAD requests are identical except that the HEAD
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33 request omits the actual contents of the file.
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34
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35 """
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36
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37 server_version = "SimpleHTTP/" + __version__
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38
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39 def do_GET(self):
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40 """Serve a GET request."""
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41 f = self.send_head()
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42 if f:
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43 self.copyfile(f, self.wfile)
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44 f.close()
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45
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46 def do_HEAD(self):
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47 """Serve a HEAD request."""
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48 f = self.send_head()
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49 if f:
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50 f.close()
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51
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52 def send_head(self):
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53 """Common code for GET and HEAD commands.
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54
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55 This sends the response code and MIME headers.
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56
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57 Return value is either a file object (which has to be copied
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58 to the outputfile by the caller unless the command was HEAD,
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59 and must be closed by the caller under all circumstances), or
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60 None, in which case the caller has nothing further to do.
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61
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62 """
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63 path = self.translate_path(self.path)
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64 f = None
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65 if os.path.isdir(path):
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66 for index in "index.html", "index.htm":
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67 index = os.path.join(path, index)
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68 if os.path.exists(index):
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69 path = index
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70 break
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71 else:
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72 return self.list_directory(path)
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73 ctype = self.guess_type(path)
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74 try:
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75 # Always read in binary mode. Opening files in text mode may cause
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76 # newline translations, making the actual size of the content
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77 # transmitted *less* than the content-length!
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78 f = open(path, 'rb')
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79 except IOError:
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80 self.send_error(404, "File not found")
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81 return None
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82 self.send_response(200)
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83 self.send_header("Content-type", ctype)
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84 self.send_header("Content-Length", str(os.fstat(f.fileno())[6]))
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85 self.end_headers()
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86 return f
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87
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88 def list_directory(self, path):
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89 """Helper to produce a directory listing (absent index.html).
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90
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91 Return value is either a file object, or None (indicating an
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92 error). In either case, the headers are sent, making the
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93 interface the same as for send_head().
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94
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95 """
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96 try:
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97 list = os.listdir(path)
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98 except os.error:
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99 self.send_error(404, "No permission to list directory")
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100 return None
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101 list.sort(key=lambda a: a.lower())
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102 f = StringIO()
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103 displaypath = cgi.escape(urllib.unquote(self.path))
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104 f.write("<title>Directory listing for %s</title>\n" % displaypath)
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105 f.write("<h2>Directory listing for %s</h2>\n" % displaypath)
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106 f.write("<hr>\n<ul>\n")
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107 for name in list:
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108 fullname = os.path.join(path, name)
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109 displayname = linkname = name
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110 # Append / for directories or @ for symbolic links
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111 if os.path.isdir(fullname):
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112 displayname = name + "/"
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113 linkname = name + "/"
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114 if os.path.islink(fullname):
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115 displayname = name + "@"
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116 # Note: a link to a directory displays with @ and links with /
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117 f.write('<li><a href="%s">%s</a>\n'
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118 % (urllib.quote(linkname), cgi.escape(displayname)))
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119 f.write("</ul>\n<hr>\n")
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120 length = f.tell()
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121 f.seek(0)
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122 self.send_response(200)
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123 self.send_header("Content-type", "text/html")
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124 self.send_header("Content-Length", str(length))
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125 self.end_headers()
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126 return f
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127
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128 def translate_path(self, path):
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129 """Translate a /-separated PATH to the local filename syntax.
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130
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131 Components that mean special things to the local file system
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132 (e.g. drive or directory names) are ignored. (XXX They should
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133 probably be diagnosed.)
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134
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135 """
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136 # abandon query parameters
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137 path = urlparse.urlparse(path)[2]
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138 path = posixpath.normpath(urllib.unquote(path))
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139 words = path.split('/')
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140 words = filter(None, words)
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141 path = os.getcwd()
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142 for word in words:
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143 drive, word = os.path.splitdrive(word)
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144 head, word = os.path.split(word)
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145 if word in (os.curdir, os.pardir): continue
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146 path = os.path.join(path, word)
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147 return path
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148
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149 def copyfile(self, source, outputfile):
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150 """Copy all data between two file objects.
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151
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152 The SOURCE argument is a file object open for reading
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153 (or anything with a read() method) and the DESTINATION
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154 argument is a file object open for writing (or
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155 anything with a write() method).
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156
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157 The only reason for overriding this would be to change
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158 the block size or perhaps to replace newlines by CRLF
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159 -- note however that this the default server uses this
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160 to copy binary data as well.
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161
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162 """
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163 shutil.copyfileobj(source, outputfile)
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164
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165 def guess_type(self, path):
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166 """Guess the type of a file.
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167
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168 Argument is a PATH (a filename).
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169
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170 Return value is a string of the form type/subtype,
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171 usable for a MIME Content-type header.
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172
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173 The default implementation looks the file's extension
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174 up in the table self.extensions_map, using application/octet-stream
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175 as a default; however it would be permissible (if
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176 slow) to look inside the data to make a better guess.
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177
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178 """
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179
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180 base, ext = posixpath.splitext(path)
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181 if ext in self.extensions_map:
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182 return self.extensions_map[ext]
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183 ext = ext.lower()
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184 if ext in self.extensions_map:
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185 return self.extensions_map[ext]
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186 else:
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187 return self.extensions_map['']
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188
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189 extensions_map = mimetypes.types_map.copy()
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190 extensions_map.update({
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191 '': 'application/octet-stream', # Default
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192 '.py': 'text/plain',
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193 '.c': 'text/plain',
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194 '.h': 'text/plain',
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195 })
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196
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197
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198 def test(HandlerClass = SimpleHTTPRequestHandler,
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199 ServerClass = BaseHTTPServer.HTTPServer):
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200 BaseHTTPServer.test(HandlerClass, ServerClass)
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201
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202
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203 if __name__ == '__main__':
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204 test()