How many HTTP GET request messages were sent by your browser?ġ3. Because the server only updates the file once every minute, when it checked the IF-MODIFIED-SINCE field it didn’t find any changes and therefore did not return the file.ġ2. The server did not return the contents of the file. What is the HTTP status code and phrase returned from the server in response to this second HTTP GET? Did the server explicitly return the contents of the file? Explain.ģ04 Not Modified. If the file hasn’t been modified since that date, the server does not resend the file. The IF-MODIFIED-SINCE gives a date to check against. Do you see an “IF-MODIFIED-SINCE:” line in the HTTP GET? If so, what information follows the “IF-MODIFIED-SINCE:” header? Now inspect the contents of the second HTTP GET request from your browser to the server. Wireshark also displays the line-based text data for the file.ġ0. It gives a Content-Length and a Content-Type in the header. Did the server explicitly return the contents of the file? How can you tell? Inspect the contents of the server response. Do you see an “IF-MODIFIED-SINCE” line in the HTTP GET?ĩ.
Inspect the contents of the first HTTP GET request from your browser to the server. No header were found that were not in the packet-listing window.Ĩ. 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. How many bytes of content are being returned to your browser?ħ. When was the HTML file that you are retrieving last modified at the server?Ħ. What is the status code returned from the server to your browser?ĥ.
My IP address is 192.168.1.138(I am behind a router). What is the IP address of your computer? Of the gaia.cs. server? It indicates that it accepts English as a language.ģ. What languages (if any) does your browser indicate that it can accept to the server?
Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server running?
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