Searcher

Scope

From a list of words, it builds the list of URL Identifiers which are related with all these words and print them sorted to the standard output following the CGI interface.

Interface

• Reads a list of words from the HTML form.
• For each word, it obtains the word-identifier by sending the message to the Lexicon :

  GET _word_string_
  

  and receives the message :

  WID _wid_
  

• For each word identifier, it obtains the list of relared URL identifiers by sending to the Sorter the message :

  GET _wid_
  

  and it receives the message :

  WRD _wid_ _size_ _urlid1_ _hit1_ ... _urlidn_ _hitn_
                   |_________________________________|
                           _size_
  

• For the graph obtained, it sends to the HITS server the message :

  URL _urlid1_ ... _urlidn_
  

  and it receives the message containing the sorted list of pages to be printed :

  RES  _urlid1_ ... _urlidn_
  

• File giving the server sockets of the servers it should contact :
  • lexicon
  • sorter
  • hits