236 lines
7.8 KiB
Python
236 lines
7.8 KiB
Python
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"""Simple HTTP Server.
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This module builds on BaseHTTPServer by implementing the standard GET
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and HEAD requests in a fairly straightforward manner.
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"""
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__version__ = "0.6"
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__all__ = ["SimpleHTTPRequestHandler"]
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import os
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import posixpath
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import BaseHTTPServer
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import urllib
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import urlparse
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import cgi
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import sys
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import shutil
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import mimetypes
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try:
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from cStringIO import StringIO
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except ImportError:
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from StringIO import StringIO
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class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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"""Simple HTTP request handler with GET and HEAD commands.
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This serves files from the current directory and any of its
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subdirectories. The MIME type for files is determined by
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calling the .guess_type() method.
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The GET and HEAD requests are identical except that the HEAD
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request omits the actual contents of the file.
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"""
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server_version = "SimpleHTTP/" + __version__
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def do_GET(self):
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"""Serve a GET request."""
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f = self.send_head()
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if f:
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try:
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self.copyfile(f, self.wfile)
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finally:
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f.close()
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def do_HEAD(self):
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"""Serve a HEAD request."""
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f = self.send_head()
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if f:
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f.close()
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def send_head(self):
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"""Common code for GET and HEAD commands.
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This sends the response code and MIME headers.
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Return value is either a file object (which has to be copied
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to the outputfile by the caller unless the command was HEAD,
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and must be closed by the caller under all circumstances), or
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None, in which case the caller has nothing further to do.
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"""
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path = self.translate_path(self.path)
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f = None
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if os.path.isdir(path):
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parts = urlparse.urlsplit(self.path)
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if not parts.path.endswith('/'):
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# redirect browser - doing basically what apache does
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self.send_response(301)
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new_parts = (parts[0], parts[1], parts[2] + '/',
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parts[3], parts[4])
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new_url = urlparse.urlunsplit(new_parts)
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self.send_header("Location", new_url)
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self.end_headers()
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return None
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for index in "index.html", "index.htm":
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index = os.path.join(path, index)
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if os.path.exists(index):
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path = index
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break
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else:
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return self.list_directory(path)
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ctype = self.guess_type(path)
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try:
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# Always read in binary mode. Opening files in text mode may cause
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# newline translations, making the actual size of the content
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# transmitted *less* than the content-length!
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f = open(path, 'rb')
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except IOError:
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self.send_error(404, "File not found")
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return None
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try:
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self.send_response(200)
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self.send_header("Content-type", ctype)
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fs = os.fstat(f.fileno())
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self.send_header("Content-Length", str(fs[6]))
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self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
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self.end_headers()
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return f
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except:
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f.close()
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raise
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def list_directory(self, path):
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"""Helper to produce a directory listing (absent index.html).
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Return value is either a file object, or None (indicating an
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error). In either case, the headers are sent, making the
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interface the same as for send_head().
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"""
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try:
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list = os.listdir(path)
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except os.error:
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self.send_error(404, "No permission to list directory")
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return None
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list.sort(key=lambda a: a.lower())
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f = StringIO()
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displaypath = cgi.escape(urllib.unquote(self.path))
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f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')
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f.write("<html>\n<title>Directory listing for %s</title>\n" % displaypath)
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f.write("<body>\n<h2>Directory listing for %s</h2>\n" % displaypath)
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f.write("<hr>\n<ul>\n")
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for name in list:
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fullname = os.path.join(path, name)
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displayname = linkname = name
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# Append / for directories or @ for symbolic links
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if os.path.isdir(fullname):
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displayname = name + "/"
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linkname = name + "/"
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if os.path.islink(fullname):
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displayname = name + "@"
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# Note: a link to a directory displays with @ and links with /
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f.write('<li><a href="%s">%s</a>\n'
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% (urllib.quote(linkname), cgi.escape(displayname)))
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f.write("</ul>\n<hr>\n</body>\n</html>\n")
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length = f.tell()
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f.seek(0)
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self.send_response(200)
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encoding = sys.getfilesystemencoding()
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self.send_header("Content-type", "text/html; charset=%s" % encoding)
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self.send_header("Content-Length", str(length))
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self.end_headers()
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return f
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def translate_path(self, path):
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"""Translate a /-separated PATH to the local filename syntax.
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Components that mean special things to the local file system
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(e.g. drive or directory names) are ignored. (XXX They should
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probably be diagnosed.)
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"""
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# abandon query parameters
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path = path.split('?',1)[0]
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path = path.split('#',1)[0]
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# Don't forget explicit trailing slash when normalizing. Issue17324
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trailing_slash = path.rstrip().endswith('/')
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path = posixpath.normpath(urllib.unquote(path))
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words = path.split('/')
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words = filter(None, words)
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path = os.getcwd()
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for word in words:
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if os.path.dirname(word) or word in (os.curdir, os.pardir):
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# Ignore components that are not a simple file/directory name
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continue
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path = os.path.join(path, word)
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if trailing_slash:
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path += '/'
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return path
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def copyfile(self, source, outputfile):
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"""Copy all data between two file objects.
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The SOURCE argument is a file object open for reading
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(or anything with a read() method) and the DESTINATION
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argument is a file object open for writing (or
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anything with a write() method).
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The only reason for overriding this would be to change
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the block size or perhaps to replace newlines by CRLF
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-- note however that this the default server uses this
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to copy binary data as well.
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"""
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shutil.copyfileobj(source, outputfile)
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def guess_type(self, path):
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"""Guess the type of a file.
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Argument is a PATH (a filename).
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Return value is a string of the form type/subtype,
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usable for a MIME Content-type header.
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The default implementation looks the file's extension
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up in the table self.extensions_map, using application/octet-stream
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as a default; however it would be permissible (if
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slow) to look inside the data to make a better guess.
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"""
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base, ext = posixpath.splitext(path)
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if ext in self.extensions_map:
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return self.extensions_map[ext]
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ext = ext.lower()
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if ext in self.extensions_map:
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return self.extensions_map[ext]
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else:
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return self.extensions_map['']
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if not mimetypes.inited:
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mimetypes.init() # try to read system mime.types
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extensions_map = mimetypes.types_map.copy()
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extensions_map.update({
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'': 'application/octet-stream', # Default
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'.py': 'text/plain',
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'.c': 'text/plain',
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'.h': 'text/plain',
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})
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def test(HandlerClass = SimpleHTTPRequestHandler,
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ServerClass = BaseHTTPServer.HTTPServer):
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BaseHTTPServer.test(HandlerClass, ServerClass)
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if __name__ == '__main__':
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test()
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