Assignment 2, CS 431/531, Fall 2018

Due: 2018-10-24

Points available: 20

Additional methods

• no new methods

Additional status codes

• 301 Moved Permanently
  • if “/foo” is a directory, the server should 301 redirect to “/foo/”
• 302 Found
  • takes a configurable list of regular expressions and provides URIs that the server should 302 redirect to
• 304 Not Modified
• 408 Request Timeout
• 412 Precondition Failed

Additional request headers

• Connection: close
  • is now optional; its absence means the request is long-lived
• If-Modified-Since
• If-Unmodified-Since
• If-Match
• If-None-Match

Additional response headers

• ETag
• Location

Notes

• Support both long-lived and pipelined connections
• Use a default of 15 seconds for timeouts (specify in a config file)
• Only compute “strong” ETags (come up with your own method)
• Any GET method that does not result in a 20X response code MUST have a text/html entity generated by the server explaining the response code (unless prohibited, like 304)
• in a config file, specify that index.html is the default resource name for when a URI ends in “/”
• if a directory does not have a default resource (i.e., index.html), then dynamically generate an HTML listing of the directories files (they should be clickable, with dates, sizes, etc.)
• create a separate config file that supports redirections of the form:

#
# Status: Incoming RE Redirect URI
#
302: ^(.*)/coolcar.html$ $1/galaxie.html
302: ^(.*)/1.[234]/(.*) $1/1.1/$2
301: ^(.*)/mercury/(.*)$ $1/ford/$2