def wsgibase(environ, responder):
    """
    this is the gluon wsgi application. the first function called when a page
    is requested (static or dynamic). it can be called by paste.httpserver
    or by apache mod_wsgi.

      - fills request with info
      - the environment variables, replacing '.' with '_'
      - adds web2py path and version info
      - compensates for fcgi missing path_info and query_string
      - validates the path in url

    The url path must be either:

    1. for static pages:

      - /<application>/static/<file>

    2. for dynamic pages:

      - /<application>[/<controller>[/<function>[/<sub>]]][.<extension>]
      - (sub may go several levels deep, currently 3 levels are supported:
         sub1/sub2/sub3)

    The naming conventions are:

      - application, controller, function and extension may only contain
        [a-zA-Z0-9_]
      - file and sub may also contain '-', '=', '.' and '/'
    """
    eget = environ.get
    current.__dict__.clear()
    request = Request(environ)
    response = Response()
    session = Session()
    env = request.env
    #env.web2py_path = global_settings.applications_parent
    env.web2py_version = web2py_version
    #env.update(global_settings)
    static_file = False
    try:
        try:
            try:
                # ##################################################
                # handle fcgi missing path_info and query_string
                # select rewrite parameters
                # rewrite incoming URL
                # parse rewritten header variables
                # parse rewritten URL
                # serve file if static
                # ##################################################

                fixup_missing_path_info(environ)
                (static_file, version, environ) = url_in(request, environ)
                response.status = env.web2py_status_code or response.status

                if static_file:
                    if eget('QUERY_STRING', '').startswith('attachment'):
                        response.headers['Content-Disposition'] \
                            = 'attachment'
                    if version:
                        response.headers['Cache-Control'] = 'max-age=315360000'
                        response.headers[
                            'Expires'] = 'Thu, 31 Dec 2037 23:59:59 GMT'
                    response.stream(static_file, request=request)


                # ##################################################
                # fill in request items
                # ##################################################
                app = request.application  # must go after url_in!

                if not global_settings.local_hosts:
                    local_hosts = set(['127.0.0.1', '::ffff:127.0.0.1', '::1'])
                    if not global_settings.web2py_runtime_gae:
                        try:
                            fqdn = socket.getfqdn()
                            local_hosts.add(socket.gethostname())
                            local_hosts.add(fqdn)
                            local_hosts.update([
                                addrinfo[4][0] for addrinfo
                                in getipaddrinfo(fqdn)])
                            if env.server_name:
                                local_hosts.add(env.server_name)
                                local_hosts.update([
                                        addrinfo[4][0] for addrinfo
                                        in getipaddrinfo(env.server_name)])
                        except (socket.gaierror, __HOLE__):
                            pass
                    global_settings.local_hosts = list(local_hosts)
                else:
                    local_hosts = global_settings.local_hosts
                client = get_client(env)
                x_req_with = str(env.http_x_requested_with).lower()

                request.update(
                    client = client,
                    folder = abspath('applications', app) + os.sep,
                    ajax = x_req_with == 'xmlhttprequest',
                    cid = env.http_web2py_component_element,
                    is_local = env.remote_addr in local_hosts,
                    is_https = env.wsgi_url_scheme in HTTPS_SCHEMES or \
                        request.env.http_x_forwarded_proto in HTTPS_SCHEMES \
                        or env.https == 'on'
                    )
                request.compute_uuid()  # requires client
                request.url = environ['PATH_INFO']

                # ##################################################
                # access the requested application
                # ##################################################

                disabled = pjoin(request.folder, 'DISABLED')
                if not exists(request.folder):
                    if app == rwthread.routes.default_application \
                            and app != 'welcome':
                        redirect(URL('welcome', 'default', 'index'))
                    elif rwthread.routes.error_handler:
                        _handler = rwthread.routes.error_handler
                        redirect(URL(_handler['application'],
                                     _handler['controller'],
                                     _handler['function'],
                                     args=app))
                    else:
                        raise HTTP(404, rwthread.routes.error_message
                                   % 'invalid request',
                                   web2py_error='invalid application')
                elif not request.is_local and exists(disabled):
                    raise HTTP(503, "<html><body><h1>Temporarily down for maintenance</h1></body></html>")

                # ##################################################
                # build missing folders
                # ##################################################

                create_missing_app_folders(request)

                # ##################################################
                # get the GET and POST data
                # ##################################################

                #parse_get_post_vars(request, environ)

                # ##################################################
                # expose wsgi hooks for convenience
                # ##################################################

                request.wsgi = LazyWSGI(environ, request, response)

                # ##################################################
                # load cookies
                # ##################################################

                if env.http_cookie:
                    try:
                        request.cookies.load(env.http_cookie)
                    except Cookie.CookieError, e:
                        pass  # invalid cookies

                # ##################################################
                # try load session or create new session file
                # ##################################################

                if not env.web2py_disable_session:
                    session.connect(request, response)

                # ##################################################
                # run controller
                # ##################################################

                if global_settings.debugging and app != "admin":
                    import gluon.debug
                    # activate the debugger
                    gluon.debug.dbg.do_debug(mainpyfile=request.folder)

                serve_controller(request, response, session)

            except HTTP, http_response:

                if static_file:
                    return http_response.to(responder, env=env)

                if request.body:
                    request.body.close()

                if hasattr(current,'request'):

                    # ##################################################
                    # on success, try store session in database
                    # ##################################################
                    session._try_store_in_db(request, response)

                    # ##################################################
                    # on success, commit database
                    # ##################################################

                    if response.do_not_commit is True:
                        BaseAdapter.close_all_instances(None)
                    elif response.custom_commit:
                        BaseAdapter.close_all_instances(response.custom_commit)
                    else:
                        BaseAdapter.close_all_instances('commit')

                    # ##################################################
                    # if session not in db try store session on filesystem
                    # this must be done after trying to commit database!
                    # ##################################################

                    session._try_store_in_cookie_or_file(request, response)

                    # Set header so client can distinguish component requests.
                    if request.cid:
                        http_response.headers.setdefault(
                            'web2py-component-content', 'replace')

                    if request.ajax:
                        if response.flash:
                            http_response.headers['web2py-component-flash'] = \
                                urllib2.quote(xmlescape(response.flash)\
                                                  .replace('\n',''))
                        if response.js:
                            http_response.headers['web2py-component-command'] = \
                                urllib2.quote(response.js.replace('\n',''))

                    # ##################################################
                    # store cookies in headers
                    # ##################################################

                    session._fixup_before_save()
                    http_response.cookies2headers(response.cookies)

                ticket = None

            except RestrictedError, e:

                if request.body:
                    request.body.close()

                # ##################################################
                # on application error, rollback database
                # ##################################################

                # log tickets before rollback if not in DB
                if not request.tickets_db:
                    ticket = e.log(request) or 'unknown'
                # rollback
                if response._custom_rollback:
                    response._custom_rollback()
                else:
                    BaseAdapter.close_all_instances('rollback')
                # if tickets in db, reconnect and store it in db
                if request.tickets_db:
                    ticket = e.log(request) or 'unknown'

                http_response = \
                    HTTP(500, rwthread.routes.error_message_ticket %
                         dict(ticket=ticket),
                         web2py_error='ticket %s' % ticket)

        except:

            if request.body:
                request.body.close()

            # ##################################################
            # on application error, rollback database
            # ##################################################

            try:
                if response._custom_rollback:
                    response._custom_rollback()
                else:
                    BaseAdapter.close_all_instances('rollback')
            except:
                pass
            e = RestrictedError('Framework', '', '', locals())
            ticket = e.log(request) or 'unrecoverable'
            http_response = \
                HTTP(500, rwthread.routes.error_message_ticket
                     % dict(ticket=ticket),
                     web2py_error='ticket %s' % ticket)

    finally:
        if response and hasattr(response, 'session_file') \
                and response.session_file:
            response.session_file.close()

    session._unlock(response)
    http_response, new_environ = try_rewrite_on_error(
        http_response, request, environ, ticket)
    if not http_response:
        return wsgibase(new_environ, responder)
    if global_settings.web2py_crontype == 'soft':
        newcron.softcron(global_settings.applications_parent).start()
    return http_response.to(responder, env=env)
dataset/ETHPy150Open uwdata/termite-visualizations/web2py/gluon/main.py/wsgibase