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annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/wsgiref/simple_server.py @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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jpayne@69 1 """BaseHTTPServer that implements the Python WSGI protocol (PEP 3333)
jpayne@69 2
jpayne@69 3 This is both an example of how WSGI can be implemented, and a basis for running
jpayne@69 4 simple web applications on a local machine, such as might be done when testing
jpayne@69 5 or debugging an application. It has not been reviewed for security issues,
jpayne@69 6 however, and we strongly recommend that you use a "real" web server for
jpayne@69 7 production use.
jpayne@69 8
jpayne@69 9 For example usage, see the 'if __name__=="__main__"' block at the end of the
jpayne@69 10 module. See also the BaseHTTPServer module docs for other API information.
jpayne@69 11 """
jpayne@69 12
jpayne@69 13 from http.server import BaseHTTPRequestHandler, HTTPServer
jpayne@69 14 import sys
jpayne@69 15 import urllib.parse
jpayne@69 16 from wsgiref.handlers import SimpleHandler
jpayne@69 17 from platform import python_implementation
jpayne@69 18
jpayne@69 19 __version__ = "0.2"
jpayne@69 20 __all__ = ['WSGIServer', 'WSGIRequestHandler', 'demo_app', 'make_server']
jpayne@69 21
jpayne@69 22
jpayne@69 23 server_version = "WSGIServer/" + __version__
jpayne@69 24 sys_version = python_implementation() + "/" + sys.version.split()[0]
jpayne@69 25 software_version = server_version + ' ' + sys_version
jpayne@69 26
jpayne@69 27
jpayne@69 28 class ServerHandler(SimpleHandler):
jpayne@69 29
jpayne@69 30 server_software = software_version
jpayne@69 31
jpayne@69 32 def close(self):
jpayne@69 33 try:
jpayne@69 34 self.request_handler.log_request(
jpayne@69 35 self.status.split(' ',1)[0], self.bytes_sent
jpayne@69 36 )
jpayne@69 37 finally:
jpayne@69 38 SimpleHandler.close(self)
jpayne@69 39
jpayne@69 40
jpayne@69 41
jpayne@69 42 class WSGIServer(HTTPServer):
jpayne@69 43
jpayne@69 44 """BaseHTTPServer that implements the Python WSGI protocol"""
jpayne@69 45
jpayne@69 46 application = None
jpayne@69 47
jpayne@69 48 def server_bind(self):
jpayne@69 49 """Override server_bind to store the server name."""
jpayne@69 50 HTTPServer.server_bind(self)
jpayne@69 51 self.setup_environ()
jpayne@69 52
jpayne@69 53 def setup_environ(self):
jpayne@69 54 # Set up base environment
jpayne@69 55 env = self.base_environ = {}
jpayne@69 56 env['SERVER_NAME'] = self.server_name
jpayne@69 57 env['GATEWAY_INTERFACE'] = 'CGI/1.1'
jpayne@69 58 env['SERVER_PORT'] = str(self.server_port)
jpayne@69 59 env['REMOTE_HOST']=''
jpayne@69 60 env['CONTENT_LENGTH']=''
jpayne@69 61 env['SCRIPT_NAME'] = ''
jpayne@69 62
jpayne@69 63 def get_app(self):
jpayne@69 64 return self.application
jpayne@69 65
jpayne@69 66 def set_app(self,application):
jpayne@69 67 self.application = application
jpayne@69 68
jpayne@69 69
jpayne@69 70
jpayne@69 71 class WSGIRequestHandler(BaseHTTPRequestHandler):
jpayne@69 72
jpayne@69 73 server_version = "WSGIServer/" + __version__
jpayne@69 74
jpayne@69 75 def get_environ(self):
jpayne@69 76 env = self.server.base_environ.copy()
jpayne@69 77 env['SERVER_PROTOCOL'] = self.request_version
jpayne@69 78 env['SERVER_SOFTWARE'] = self.server_version
jpayne@69 79 env['REQUEST_METHOD'] = self.command
jpayne@69 80 if '?' in self.path:
jpayne@69 81 path,query = self.path.split('?',1)
jpayne@69 82 else:
jpayne@69 83 path,query = self.path,''
jpayne@69 84
jpayne@69 85 env['PATH_INFO'] = urllib.parse.unquote(path, 'iso-8859-1')
jpayne@69 86 env['QUERY_STRING'] = query
jpayne@69 87
jpayne@69 88 host = self.address_string()
jpayne@69 89 if host != self.client_address[0]:
jpayne@69 90 env['REMOTE_HOST'] = host
jpayne@69 91 env['REMOTE_ADDR'] = self.client_address[0]
jpayne@69 92
jpayne@69 93 if self.headers.get('content-type') is None:
jpayne@69 94 env['CONTENT_TYPE'] = self.headers.get_content_type()
jpayne@69 95 else:
jpayne@69 96 env['CONTENT_TYPE'] = self.headers['content-type']
jpayne@69 97
jpayne@69 98 length = self.headers.get('content-length')
jpayne@69 99 if length:
jpayne@69 100 env['CONTENT_LENGTH'] = length
jpayne@69 101
jpayne@69 102 for k, v in self.headers.items():
jpayne@69 103 k=k.replace('-','_').upper(); v=v.strip()
jpayne@69 104 if k in env:
jpayne@69 105 continue # skip content length, type,etc.
jpayne@69 106 if 'HTTP_'+k in env:
jpayne@69 107 env['HTTP_'+k] += ','+v # comma-separate multiple headers
jpayne@69 108 else:
jpayne@69 109 env['HTTP_'+k] = v
jpayne@69 110 return env
jpayne@69 111
jpayne@69 112 def get_stderr(self):
jpayne@69 113 return sys.stderr
jpayne@69 114
jpayne@69 115 def handle(self):
jpayne@69 116 """Handle a single HTTP request"""
jpayne@69 117
jpayne@69 118 self.raw_requestline = self.rfile.readline(65537)
jpayne@69 119 if len(self.raw_requestline) > 65536:
jpayne@69 120 self.requestline = ''
jpayne@69 121 self.request_version = ''
jpayne@69 122 self.command = ''
jpayne@69 123 self.send_error(414)
jpayne@69 124 return
jpayne@69 125
jpayne@69 126 if not self.parse_request(): # An error code has been sent, just exit
jpayne@69 127 return
jpayne@69 128
jpayne@69 129 handler = ServerHandler(
jpayne@69 130 self.rfile, self.wfile, self.get_stderr(), self.get_environ(),
jpayne@69 131 multithread=False,
jpayne@69 132 )
jpayne@69 133 handler.request_handler = self # backpointer for logging
jpayne@69 134 handler.run(self.server.get_app())
jpayne@69 135
jpayne@69 136
jpayne@69 137
jpayne@69 138 def demo_app(environ,start_response):
jpayne@69 139 from io import StringIO
jpayne@69 140 stdout = StringIO()
jpayne@69 141 print("Hello world!", file=stdout)
jpayne@69 142 print(file=stdout)
jpayne@69 143 h = sorted(environ.items())
jpayne@69 144 for k,v in h:
jpayne@69 145 print(k,'=',repr(v), file=stdout)
jpayne@69 146 start_response("200 OK", [('Content-Type','text/plain; charset=utf-8')])
jpayne@69 147 return [stdout.getvalue().encode("utf-8")]
jpayne@69 148
jpayne@69 149
jpayne@69 150 def make_server(
jpayne@69 151 host, port, app, server_class=WSGIServer, handler_class=WSGIRequestHandler
jpayne@69 152 ):
jpayne@69 153 """Create a new WSGI server listening on `host` and `port` for `app`"""
jpayne@69 154 server = server_class((host, port), handler_class)
jpayne@69 155 server.set_app(app)
jpayne@69 156 return server
jpayne@69 157
jpayne@69 158
jpayne@69 159 if __name__ == '__main__':
jpayne@69 160 with make_server('', 8000, demo_app) as httpd:
jpayne@69 161 sa = httpd.socket.getsockname()
jpayne@69 162 print("Serving HTTP on", sa[0], "port", sa[1], "...")
jpayne@69 163 import webbrowser
jpayne@69 164 webbrowser.open('http://localhost:8000/xyz?abc')
jpayne@69 165 httpd.handle_request() # serve one request, then exit