Uniform Resource Locators Scheme Port Number Query http
Uniform Resource Locators Scheme Port Number Query http: //localhost: 8080/friendships/create? my_id=100&user_id=200 Host Name Hierarchical portion CS 190 Lecture Notes: Modular Design Slide 1
HTTP GET Request Method Headers Body (empty) URL Protocol Version GET /statuses/user_timeline? my_id=100 HTTP/1. 1 Host: www. example. com User-Agent: Mozilla/5. 0 Accept: text/html, */* Accept-Language: en-us Accept-Charset: ISO-8859 -1, utf-8 Connection: keep-alive blank line CS 190 Lecture Notes: Modular Design Slide 2
HTTP POST Response Version Headers Status Message HTTP/1. 1 200 OK Date: Thu, 24 Jul 2008 17: 36: 27 GMT Server: Tweeter/1. 0 Content-Type: application/json; charset=UTF-8 Content-Length: 266 blank line Body {"tweets": [{"id": 20006, "user": 100, "time": "Mon Oct 27 18: 02: 57 PDT 2014", "text": "I’m at home now"}, . . . ] } CS 190 Lecture Notes: Modular Design Slide 3
Example Requests POST /friendships/create? my_id=100&user_id=200 § User 100 becomes a follower of user 200 POST /friendships/destroy? my_id=100&user_id=200 § User 100 is no longer a follower of user 200 GET /friends/ids. json? user_id=100 § Return ids for all users that user 100 is following: [100, 84, 290, 16] POST /statuses/update? my_id=100&status=Sleepy § Create a new tweet for user 100 CS 190 Lecture Notes: Modular Design Slide 4
Network APIs server. Socket = new Server. Socket(port. Number); § Open a socket for server to accept connections § Containing application provides the port number socket = server. Socket. accept(); reader = new Input. Stream. Reader( socket. get. Input. Stream()); § Wait for next incoming connection socket. close() § Close specific connection to client All socket calls can throw IOException CS 190 Lecture Notes: Modular Design Slide 5
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