HTTP communication
Contents:
Example 1: Basic retrieval
Example 2: Sending GET request
Example 3: Sending POST request
Example 1: Basic retrieval
Browser sends:
GET /form_test.html HTTP/1.1 Host: bilbo.cs.hendrix.edu:8888 Connection: keep-alive User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.2 (KHTML, like Gecko) Ubuntu/10.04 Chromium/15.0.874.106 Chrome/15.0.874.106 Safari/535.2 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Server responds:
HTTP/1.1 200 OK Date: Tue, 31 Jan 2012 15:40:14 GMT Server: Apache/2.2.3 (CentOS) Last-Modified: Tue, 31 Jan 2012 15:32:25 GMT ETag: "18fc4d-183-4b7d4ab7eb440" Accept-Ranges: bytes Content-Length: 387 Connection: close Content-Type: text/html; charset=UTF-8 <!DOCTYPE html> <body> <head> <meta charset="utf-8"> <title>Form Examples</title> </head> <body> <form method="get" action="http://localhost:8888/execute_get"> User ID: <input name="userid"></input><br /> Subject: <input name="subject"></input><br /> <input type="submit"></input> </form> <form method="post" action="http://localhost:8888/execute_post"> User ID: <input name="userid"></input><br /> Subject: <input name="subject"></input><br /> <input type="submit"></input> </form> </body> </html>
Example 2: Sending GET retrieval
Web form:
<form method="get" action="/execute_get">
User ID: <input name="userid"></input><br />
Subject: <input name="subject"></input><br />
<input type="submit"></input>
</form>
Browser sends:
GET /execute_get?userid=bitdiddle&subject=Ones+and+Zeroes HTTP/1.1 Host: bilbo.cs.hendrix.edu:8888 Connection: keep-alive User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.2 (KHTML, like Gecko) Ubuntu/10.04 Chromium/15.0.874.106 Chrome/15.0.874.106 Safari/535.2 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Server responds:
HTTP/1.1 200 OK
Content-Type: application/json
Connection: close
{"success":true}
Example 3: Sending POST retrieval
Web form:
<form method="post" action="/execute_post">
User ID: <input name="userid"></input><br />
Subject: <input name="subject"></input><br />
<input type="submit"></input>
</form>
Browser sends:
POST /execute_post HTTP/1.1 Host: bilbo.cs.hendrix.edu:8888 Connection: keep-alive Content-Length: 40 Cache-Control: max-age=0 Origin: null User-Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/535.2 (KHTML, like Gecko) Ubuntu/10.04 Chromium/15.0.874.106 Chrome/15.0.874.106 Safari/535.2 Content-Type: application/x-www-form-urlencoded Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 userid=bitdiddle&subject=Ones+and+Zeroes
Server responds:
HTTP/1.1 200 OK
Content-Type: application/json
Connection: close
{"success":true}