English

1. Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server

running? HTTP 1.1 (see screenshot)

2. What languages (if any) does your browser indicate that it can accept to the server? en-US

(US English) as shown in prior screenshot

3. What is the IP address of your computer? Of the spinlab.wpi.edu server? My computer

is 10.211.55.3 (this is a virtual IP address assigned by my virtual machine software) and the

destination is 130.215.16.168. See prior screenshot.

4. What is the status code returned from the server to your browser? 200 OK (see prior screenshot)

5. When was the HTML file that you are retrieving last modified at the server? We can filter

messages by http.last_modified and we see that the HTTP response I received for the html

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file doesn’t show this field. We do have a http.last_modified field in the favicon response

however, as shown in the screenshot below. This says the favicon was last modified on Feb

25, 2010.

6. How many bytes of content are being returned to your browser? Content-length = 209 bytes.

See screenshot below.

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7. By inspecting the raw data in the packet content window, do you see any headers within the

data that are not displayed in the packet-listing window? If so, name one. No. The raw data

appears to match up exactly with what is shown in the packet-listing window.

8. Inspect the contents of the first HTTP GET request from your browser to the server. Do you

see an “IF-MODIFIED-SINCE” line in the HTTP GET? No.

9. Inspect the contents of the server response. Did the server explicitly return the contents of

the file? How can you tell? See screenshot of response with Alice’s Adventures...

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10. Now inspect the contents of the second HTTP GET request from your browser to the server.

Do you see an “IF-MODIFIED-SINCE:” line in the HTTP GET? If so, what information

follows the “IF-MODIFIED-SINCE:” header? Yes.

If-Modified-Since: Wed, 12 Mar 2014 17:29:08 GMT\r\n.

See screenshot below.

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11. What is the HTTP...